DETAILED INFO. Anyone connected to your network can use the default access code to lock you out or grant themselves privileges. If this happens, or if you forgot your access code, press and hold the Reset button on your device to change it back to the factory default settings.Review and update your email settings. Access your AT&T email settings by hovering over the gear icon, then choosing Settings. Review these areas for suspicious activity: Email signature: Look for any changes to your signature or content that you don’t recognize. Accounts: Check each of your email accounts.Network Unlock code. I tried unlocking my Samsung J3 (2019) by carefully entering the code that I received by mail. But the device displays "incorrect code". The problem is that I was sent the "device unlock code" by AT&T. However, I am asked for the "network unlock code" to unlock my phone.Jun 12, 2023 · Talk to sales Call +1 (888) 610-2915 to find the best hosting for you. Jul 25, 2022 · Samsung Galaxy Network Unlock Codes. If you see the "Enter Network Lock Control Key" or " SIM Network Unlock PIN" on the screen. If the message "Unsuccessful" appears, you have tried to enter the unlock code several times. In this case, enter: *2767*3855# to reset your Phone. Enter your Unfreeze code (MCK) into the SIM network to unlock the PIN ... Touch screen (TSP and Touch Key) firmware information code and update TSK and TSP firmware: *#2663#. Insert Network Lock Control Keycode: #7465625*638*#. Samsung Phone USB Settings Code: *#0808#. Reset total call time Code: *#22558463#. Here is the complete list of secret codes for the Samsung galaxy series.If things are looking good for the network, you can try simply restarting your device, resetting network settings to default, and a factory reset. If this all fails, you may have a malfunctioning ...Try again. Manage your Wi-Fi network, connect devices to your network, and more. Smart Home Manager is an easy way to personalize and manage your network info from your device. You can use Smart Home Manager if you have AT&T Internet, Internet Air, Fixed Wireless Internet, or Small Business Internet with select Wi-Fi® gateways or All-Fi™ Hub. 1.AT&T provides customers using its mass market wired and fixed wireless broadband internet access services tools to help them configure, manage, and secure their local or in-home networks. These tools provide customers information regarding the status of their internet service, the devices connected to their local or in-home network, and the ...Android. Go to your Settings. Tap Phone and then Blocked contacts. Select Edit, the number or contact to update, and then Unblock. Go to your Messages. Tap the Menu (3 dots) and then Settings. Choose Block Numbers and Messages and then Blocked Messages. Select messages to be unblocked.How can we help you? Contact AT&T by phone or live chat to order new service, track orders, and get customer service, billing and tech support. Your personal device: Is an AT&T phone or device and isn't active on another AT&T account. Paid through your monthly bill: Submit your unlock request at the start of your next bill period. Paid off early: The wireless number assigned to the device must be active for at least 60 days. Wait 48 hours after you make your final payment to submit ...Conclusion Codes The following tables list the conclusion codes and conclusion code descriptions. ... BO-ID/Reset 109 AT&T Network 110 PTT Network 11 Emergency ...Apr 25, 2023 · DETAILED INFO. Anyone connected to your network can use the default access code to lock you out or grant themselves privileges. If this happens, or if you forgot your access code, press and hold the Reset button on your device to change it back to the factory default settings. You can update your code at any time from a device connected to your ... Use Smart Home Manager from a computer to update your Wi-Fi ® info: Sign in to Smart Home Manager. Scroll to the My Wi-Fi card and choose Change next to the name or password. Select X to clear existing info, then enter a new name or password. Select Save. Reconnect your devices with the updated network info.Feb 28, 2021 · Tap "Reset Settings" to begin the process. Provide your lock screen PIN, password, fingerprint, or other form of authentication, then tap "Reset Settings" again to confirm. Once this is complete, your Android device's network settings will reset to default settings, and you should restart your device to complete the changes. From the general screen, scroll down and select reset. You will be taken to the reset screen. Select Reset Network Settings. Resetting the network deletes saved Wi-Fi Networks. Note: For specific instructions on how to reset your device, visit our Device How-To.Select your device's brand or model > Your Device > Tutorials > Troubleshooting ...Jul 25, 2022 · Samsung Galaxy Network Unlock Codes. If you see the "Enter Network Lock Control Key" or " SIM Network Unlock PIN" on the screen. If the message "Unsuccessful" appears, you have tried to enter the unlock code several times. In this case, enter: *2767*3855# to reset your Phone. Enter your Unfreeze code (MCK) into the SIM network to unlock the PIN ... Try these tips: Make sure your Ethernet cable is connected to the WAN port on your Cell Booster and your router or gateway. If you have a modem and a separate router, try connecting your Cell Booster directly to your modem. Check the internet connection on other devices. Restart your router or gateway and your Cell Booster device.Most often it's because the code isn't entered correctly....typo, upper/lower case error, mistaking a 0 for an O, etc. I usually suggest people take a picture of the label with their phone so they can zoom in and make certain of the characters. Next, try a different web browser. I've seen reports of certain browsers (I think it was a Mac) which ...• We can only unlock devices that are locked to the AT&T network. • You can submit a new request if you lose your unlock code. There’s a limit to the number times you can try to enter the code to unlock your device. The specific number depends on your device model and manufacturer.I will be happy to help! At this time, we do not have a code in order to update your tower. You can power cycle your phone (turn off and back on) or put your phone in airplane mode for a moment and back out to reset the network settings. If you have an iPhone, you can reset the network settings through Settings > General > Reset > Reset network ...Jul 25, 2023 · Showing Content for | Change your ZIP Code. Enter another ZIP to see info from a different area. X | ` >. `. We can't find that ZIP Code. Try again. General t mobile short codes. t mobile short codes. Preventing the network connection of a stolen phone, you may utilize the IMEI number provided by these t mobile short codes numbers. This number is unique to your T-Mobile phone: IMEI number *#06#. Battery status *#0228#.Mar 15, 2023 · Go to your myAT&T profile. Choose People & Permissions. Select Wireless. Scroll to Transfer phone number and select Request a new PIN. Your Number Transfer PIN will display on the screen. Heads up: AT&T employees can’t generate a Number Transfer PIN on your behalf. Go to your myAT&T profile. Choose People & Permissions. Select Wireless. Scroll to Transfer phone number and select Request a new PIN. Your Number Transfer PIN will display on the screen. Heads up: AT&T employees can’t generate a Number Transfer PIN on your behalf.Network reset. I am not able to send texts on my pre paid flip phone and I pretty sure its something that I did I changed the settings on the text settings there was a phone number it had on message settings. Questions. 665. 0.Learn how you can help protect your phone from unauthorized use if it has been lost, stolen, or reset to factory settings without your permission. Secure My Device Learn how to lock or unlock your display, set a screen security lock type, get your PUK code, or request your device be unlocked from the AT&T network. Mar 14, 2023 · Use Smart Home Manager from a computer to update your Wi-Fi ® info: Sign in to Smart Home Manager. Scroll to the My Wi-Fi card and choose Change next to the name or password. Select X to clear existing info, then enter a new name or password. Select Save. Reconnect your devices with the updated network info. Jun 8, 2022 · General t mobile short codes. t mobile short codes. Preventing the network connection of a stolen phone, you may utilize the IMEI number provided by these t mobile short codes numbers. This number is unique to your T-Mobile phone: IMEI number *#06#. Battery status *#0228#. AT&T Network Unlock Code Free. Tutorial on how to get a free network unlocking code for all types of mobile devices.. in this video i show you how to request...The reset codes work file on my note 1, I cant seem to find a way to get a complete factory reset. When I use the phones factory reset it dosent erase anything really ...Manage and personalize your home Wi-Fi network with AT&T Smart Home Manager. With this free and secure tool, you can add or block connected devices, run speed tests, apply internet access controls and more. Apr 25, 2023 · DETAILED INFO. Anyone connected to your network can use the default access code to lock you out or grant themselves privileges. If this happens, or if you forgot your access code, press and hold the Reset button on your device to change it back to the factory default settings. You can update your code at any time from a device connected to your ... The MCK is the Master Code Key, and only Samsung has that for their devices. It resets the counter for the NCK input, the Network Unlock Code, which IS something AT&T has. It's likely that the Samsung reps you spoke to simply don't want to get evolved thinking it might be a stolen phone.With your device powered off, press and hold down the Volume up and Power/Lock buttons at the same time until the screen lights up. 2. Press the Volume up button to scroll to Recovery Mode, then press the Volume down button to select. 3. From the "No command" screen, press and hold the Power/Lock and Volume up buttons for a few seconds then ... The factory reset code for HTC devices is *2767*3855#. The method to reset HTC phones via factory reset code is the same as described above. Follow these instructions to reset HTC phone via the code: step 1. Remove SIM card from your HTC phone. step 2. Open the dialer/phone app on your device and input this code: *2767*3855# step 3.Jul 23, 2020 · AT&T Network Unlock Code Free. Tutorial on how to get a free network unlocking code for all types of mobile devices.. in this video i show you how to request... From the home screen, tap the Settings icon. 2. The settings section will open, scroll down until you see General and select it. 3. From the general screen, scroll down until you see the reset option. Select Reset. 4. You will be taken to the reset screen. Select Reset Network Settings.1. If unable to perform the standard ‘Factory data reset’ using the above steps, try the Alternate method by first powering the device off. With your device powered off, press and hold the Volume up and Side buttons simultaneously until the Android Recovery screen appears. 2. Press the Volume down button until Wipe data/factory reset is ...Reset network settings If you are having connectivity issues, you can try resetting your network settings. Swipe down from the Notification bar with two fingers, then select the Settings icon > scroll to and select System > Reset options > Reset Wi-Fi, mobile & Bluetooth > Reset settings > select Reset settings again to confirm.Reset network settings If you are having connectivity issues, you can try resetting your network settings. Swipe down from the Notification bar with two fingers, then select the Settings icon > scroll to and select System > Reset options > Reset Wi-Fi, mobile & Bluetooth > Reset settings > select Reset settings again to confirm.Dec 7, 2022 · The power status lights on your Wi-Fi ® gateway indicate: Green: The gateway is powered on. Flashing green: The gateway is starting. Amber: There’s a software update in progress. Don’t unplug the gateway or remove the battery until the update completes. Red: The gateway or power supply may be malfunctioning. Try rebooting your gateway to ... Nov 12, 2021 · Some carriers may assign special functions to certain codes that are exclusive to their network. Check the lists below for your carrier and see which features their USSD codes can unlock ... Jul 31, 2018 · #resetnetworksettings #androidtips #androidtricks Learn how to reset network settings in Android mobile of Samsung, Micromax, Moto, Lenovo, Oppo, Vivo, Inte... AT&T provides customers using its mass market wired and fixed wireless broadband internet access services tools to help them configure, manage, and secure their local or in-home networks. These tools provide customers information regarding the status of their internet service, the devices connected to their local or in-home network, and the ...There are multiple ways to reset your device if you are experiencing issues. Power cycling your device is the first step. In this tutorial, you will learn how to: • Power cycle your device • Restart your device • Reset network settings • Perform a factory data reset • Perform an alternate master reset. Power cycle your deviceAT&T provides customers using its mass market wired and fixed wireless broadband internet access services tools to help them configure, manage, and secure their local or in-home networks. These tools provide customers information regarding the status of their internet service, the devices connected to their local or in-home network, and the ...Mar 31, 2023 · Article Summary. To unlock your AT&T phone: Find your device's IMEI number and your PUK code. Visit AT&T's online unlock portal to request a device unlock. Enter your IMEI and AT&T account information. After AT&T approves your request, use your unlock code and follow the instructions for your specific phone. AT&T makes it easy to unlock a phone ... AT&T provides customers using its mass market wired and fixed wireless broadband internet access services tools to help them configure, manage, and secure their local or in-home networks. These tools provide customers information regarding the status of their internet service, the devices connected to their local or in-home network, and the ...Apr 25, 2023 · DETAILED INFO. Anyone connected to your network can use the default access code to lock you out or grant themselves privileges. If this happens, or if you forgot your access code, press and hold the Reset button on your device to change it back to the factory default settings. You can update your code at any time from a device connected to your ... There are multiple ways to reset your device if you are experiencing issues. Power cycling your device is the first step. In this tutorial, you will learn how to: • Power cycle your device • Restart your device • Reset network settings • Perform a factory data reset • Perform an alternate master reset. Power cycle your device Most often it's because the code isn't entered correctly....typo, upper/lower case error, mistaking a 0 for an O, etc. I usually suggest people take a picture of the label with their phone so they can zoom in and make certain of the characters. Next, try a different web browser. I've seen reports of certain browsers (I think it was a Mac) which ...If you change or reset your password, make sure: You update your password wherever you have it saved. This includes your devices, web browsers, and any apps. Use the same ID and password to sign in to both myAT&T and your email? Make sure you use the new password to sign in to your AT&T Mail account. Still having trouble with your password?Select General, then scroll to and select Transfer or Reset iPhone. 4. Select Erase All Content and Settings to reset device, then select Continue. 5. Select Finish Upload Then Erase or Erase Now . 6. Select Erase iPhone to confirm. Note: If you have a passcode, you will be prompted to enter your passcode to complete the reset. Enter your Apple ... Learn more about AT&T Wireless plans and AT&T Internet service, including AT&T Fiber. Shop cell phones, accessories and more. Hello @rugr47. if you are trying to change your password for your wireless network, and you have to reset a password to get to this step, it is probably asking for the Device Access Code. This is a separate password that allows you to access the system. Look for the Device Access Code on the sticker, and try this one instead. Good Luck. Alex. 0.Just pick up the phone to talk to our support on 800.531.5000. Technical support is open from 5:00 AM to 2:00 AM CT and billing & account support from 7:00 AM to 9:00 PM CT every day. Steps for resetting Samsung phone using Android Factory Reset Code. Step 1. First of all, remove the SIM from your Samsung device. Step 2. Next, open the phone app/dialer on your Samsung phone and enter the code - *#*#7780#*#*. Step 3. The process of factory resetting will begin as soon as the code is entered.Review and update your email settings. Access your AT&T email settings by hovering over the gear icon, then choosing Settings. Review these areas for suspicious activity: Email signature: Look for any changes to your signature or content that you don’t recognize. Accounts: Check each of your email accounts.With your device powered off, press and hold down the Volume up and Power/Lock buttons at the same time until the screen lights up. 2. Press the Volume up button to scroll to Recovery Mode, then press the Volume down button to select. 3. From the "No command" screen, press and hold the Power/Lock and Volume up buttons for a few seconds then ...Nov 12, 2021 · Some carriers may assign special functions to certain codes that are exclusive to their network. Check the lists below for your carrier and see which features their USSD codes can unlock ... • You can submit a new request if you lose your unlock code. There’s a limit to the number times you can try to enter the code to unlock your device. The specific number depends on your device model and manufacturer. • You have to submit an ®unlock request for iPhones , but you won’t need an unlock code to complete the process. Plus, iPads There are multiple ways to reset your device if you are experiencing issues. Power cycling your device is the first step. In this tutorial, you will learn how to: • Power cycle your device • Restart your device • Reset network settings • Perform a factory data reset • Perform an alternate master reset. Power cycle your device You can use the following codes to retrieve information about your system (hardware and software): *#06# - Display the IMEI. *#*#4636#*#* - Display information about your phone, its battery and additional usage statistics. *#232337# - Display the MAC address of your Bluetooth radio. *#232338# - Display the MAC address of your WLAN adapter.Apr 30, 2020 · Step 3: Input the code and your device is unlocked. If the device does not ask for the Samsung Codes, then follow the instructions below: Method 1. Step 1: Open the phone and type #7465625*638*# in the dialer. Step 2: Then, it will ask for the Samsung Reset Code, it is an 8-digit code. Step 3: Provide it and you will be done. Method 2 Dec 7, 2022 · Select Home Network > Wireless. In Password, enter the Device Access Code (located on the side of your gateway). Scroll to the Security section. From the Security drop-down, select WPA-PSK. In the Key entry field, enter a new Wi-Fi password (Wireless Key). For 64-bit encryption, enter a 10-digit password made up of numbers and letters a-f or A-F. May 17, 2023 · Here’s how: Unplug the power cord from the back of your device. If you have: An internal battery backup, remove it. DSL service, unplug your telephone cord from your modem or gateway. Wait 20 seconds. Put the internal battery back in, if applicable. Plug the power cord back in. Resetting your network settings clears out all of your internet, local network, and paired devices' data. A factory reset will delete pretty much everything on your device, reverting it to the state it was in when you unboxed it. A network settings reset will not delete any files, folders, or other media stored on your device.Dec 21, 2021 · We can definitely provide you with some more information on this. Unfortunately, the incorrect entry of an unlock code too many times during the life of the device disables the unlock ability and permanently locks the device to the network. We do apologize for the inconvenience. Sean, AT&T Community Specialist. 0. 6. Tap Reset Wi-Fi, mobile, & Bluetooth. It's the first option in the "Reset Options" menu. This is the option you use to reset your network settings. 7. Tap Reset settings. This displays a confirmation pop-up. If you have a security password, PIN, or pattern set up on your phone, enter it when prompted to continue.Here’s how: Unplug the power cord from the back of your device. If you have: An internal battery backup, remove it. DSL service, unplug your telephone cord from your modem or gateway. Wait 20 seconds. Put the internal battery back in, if applicable. Plug the power cord back in.The MCK is the Master Code Key, and only Samsung has that for their devices. It resets the counter for the NCK input, the Network Unlock Code, which IS something AT&T has. It's likely that the Samsung reps you spoke to simply don't want to get evolved thinking it might be a stolen phone.Jun 12, 2023 · Talk to sales Call +1 (888) 610-2915 to find the best hosting for you. Mar 4, 2019 · Step 1 –. Go to Settings > Backup and Reset/General Management > Reset Network Settings > Reset. If prompted, enter your password and confirm the reset. Wait for the phone to complete the reset process. Step 2 –. First, go to Settings > Mobile Data and ensure that Mobile Data is enabled. (This will vary depending on your Android phone. Dec 7, 2022 · To unlock the SIM card in your AT&T PREPAID SM device: Call 800.901.9878 to get the PUK code. If a Motorola device isn’t currently displaying Enter PUK, enter **05* before entering the PUK code. Enter the eight-digit PUK code in your device. Select OK/Yes. Jan 20, 2023 · Use the AT&T Network Coverage Map. It's easy to check our network coverage in your location: Go to the AT&T Network Coverage Map. Enter an address, state, or ZIP Code, and select the search icon. We'll show you what type of coverage is available. In an area with limited or no coverage? Call forwarding details. You can continue to make outgoing calls from your wireless phone. The designated number receives forwarded Incoming calls. Call forwarding overrides your wireless voicemail. If the designated forwarding number is busy, callers to your number will receive a busy signal. You can’t forward calls to an international number.If things are looking good for the network, you can try simply restarting your device, resetting network settings to default, and a factory reset. If this all fails, you may have a malfunctioning ...I've tried all the resets besides factory. Flicked mobile data on and off. Don't receive any MMS even on wifi. If you haven't already, turn on wifi calling. That doesn't fix the core problem, but you'll at least be able to send & receive. This worked on my Galaxy S20 Plus.Dec 2, 2020 · AT&T Router Login: Make sure you're connected to your AT&T router's network. Open a browser and go to 192.168.1.254. 1. Your personal device: Is an AT&T phone or device and isn't active on another AT&T account. Paid through your monthly bill: Submit your unlock request at the start of your next bill period. Paid off early: The wireless number assigned to the device must be active for at least 60 days. Wait 48 hours after you make your final payment to submit ...Just pick up the phone to talk to our support on 800.531.5000. Technical support is open from 5:00 AM to 2:00 AM CT and billing & account support from 7:00 AM to 9:00 PM CT every day. Sep 6, 2023 · You can use the following codes to retrieve information about your system (hardware and software): *#06# - Display the IMEI. *#*#4636#*#* - Display information about your phone, its battery and additional usage statistics. *#232337# - Display the MAC address of your Bluetooth radio. *#232338# - Display the MAC address of your WLAN adapter. Learn how you can help protect your phone from unauthorized use if it has been lost, stolen, or reset to factory settings without your permission. Secure My Device Learn how to lock or unlock your display, set a screen security lock type, get your PUK code, or request your device be unlocked from the AT&T network. May 28, 2019 · The device unlock code that you received from AT&T is used to unlock your device from the AT&T network, so it is the same as the network unlock code. When you go to complete the unlock process and enter your unlock code in your device, please follow the instructions that you were provided via email along with your unlock code, and be sure to ... The factory reset code for HTC devices is *2767*3855#. The method to reset HTC phones via factory reset code is the same as described above. Follow these instructions to reset HTC phone via the code: step 1. Remove SIM card from your HTC phone. step 2. Open the dialer/phone app on your device and input this code: *2767*3855# step 3.
Enter a PIN code to lock your SIM card. The default PIN code for an AT&T SIM card is "1111". Change the default PIN code for more security. After activating SIM lock, you must enter the PIN code if you move the SIM card to another device. If you forget your SIM lock PIN code, learn how to get the PIN Unlock Key (PUK) code to unlock your SIM card.. Atandt internet plans prices
Try to sign in to your email using your new password. If that doesn’t work, reset your password. Go to reset your password. Enter your user ID and the last name associated with your ID. Choose your verification method and follow the prompts. Enter and confirm your new password.AT&T provides customers using its mass market wired and fixed wireless broadband internet access services tools to help them configure, manage, and secure their local or in-home networks. These tools provide customers information regarding the status of their internet service, the devices connected to their local or in-home network, and the ...Restart your gateway or modem manually. Unplug the power cord from the back of your gateway or modem. If you have: Wait 20 seconds. Put the internal battery back in if you have one. Plug the power cord back in. If you have DSL service, reconnect the phone cord. Wait for the gateway or modem to restart and your Broadband light to turn solid green.Feb 28, 2021 · Tap "Reset Settings" to begin the process. Provide your lock screen PIN, password, fingerprint, or other form of authentication, then tap "Reset Settings" again to confirm. Once this is complete, your Android device's network settings will reset to default settings, and you should restart your device to complete the changes. Recover your ID or reset your password. Restart your device if the app isn't responding. Restart your device, then open the myAT&T app 1. Sign in with your user ID and password. Be sure to delete any IDs you’ve saved first.. Reinstall the app if restarting doesn’t help. Delete the myAT&T app 1 from your smartphone or tablet. Download the ...Use Smart Home Manager from a computer to update your Wi-Fi ® info: Sign in to Smart Home Manager. Scroll to the My Wi-Fi card and choose Change next to the name or password. Select X to clear existing info, then enter a new name or password. Select Save. Reconnect your devices with the updated network info.Mar 15, 2023 · Go to your myAT&T profile. Choose People & Permissions. Select Wireless. Scroll to Transfer phone number and select Request a new PIN. Your Number Transfer PIN will display on the screen. Heads up: AT&T employees can’t generate a Number Transfer PIN on your behalf. Your personal device: Is an AT&T phone or device and isn't active on another AT&T account. Paid through your monthly bill: Submit your unlock request at the start of your next bill period. Paid off early: The wireless number assigned to the device must be active for at least 60 days. Wait 48 hours after you make your final payment to submit ...If things are looking good for the network, you can try simply restarting your device, resetting network settings to default, and a factory reset. If this all fails, you may have a malfunctioning ...1. If unable to perform the standard ‘Factory data reset’ using the above steps, try the Alternate method by first powering the device off. With your device powered off, press and hold the Volume up and Side buttons simultaneously until the Android Recovery screen appears. 2. Press the Volume down button until Wipe data/factory reset is ...Step 2. Power on your AT&T wireless phone. After your AT&T wireless phone reboots, it will be automatically updated to local towers.Review and update your email settings. Access your AT&T email settings by hovering over the gear icon, then choosing Settings. Review these areas for suspicious activity: Email signature: Look for any changes to your signature or content that you don’t recognize. Accounts: Check each of your email accounts.Learn more about AT&T Wireless plans and AT&T Internet service, including AT&T Fiber. Shop cell phones, accessories and more. From the general screen, scroll down and select reset. You will be taken to the reset screen. Select Reset Network Settings. Resetting the network deletes saved Wi-Fi Networks. Note: For specific instructions on how to reset your device, visit our Device How-To.Select your device's brand or model > Your Device > Tutorials > Troubleshooting ...There are multiple ways to reset your device if you are experiencing issues. Power cycling your device is the first step. In this tutorial, you will learn how to: • Power cycle your device • Restart your device • Reset network settings • Perform a factory data reset • Perform an alternate master reset. Power cycle your deviceThere are multiple ways to reset your device if you are experiencing issues. Power cycling your device is the first step. In this tutorial, you will learn how to: • Power cycle your device • Restart your device • Reset network settings • Perform a factory data reset • Perform an alternate master reset. Power cycle your device With your device powered off, press and hold down the Volume up and Power/Lock buttons at the same time until the screen lights up. 2. Press the Volume up button to scroll to Recovery Mode, then press the Volume down button to select. 3. From the "No command" screen, press and hold the Power/Lock and Volume up buttons for a few seconds then ... Jun 12, 2023 · Talk to sales Call +1 (888) 610-2915 to find the best hosting for you. The MCK is the Master Code Key, and only Samsung has that for their devices. It resets the counter for the NCK input, the Network Unlock Code, which IS something AT&T has. It's likely that the Samsung reps you spoke to simply don't want to get evolved thinking it might be a stolen phone..