Cellular data not working. Out of nowhere, my cellular data stopped loading anything despite “5ge” being in the corner with full bars. I’ve tried powering off my phone, taking the SIM card out, nothing is working. I can’t troubleshoot the network because I would have to sign in and I do not pay for this account. My dad does.64.5K Messages. 2 years ago. You aren’t really connected to ATT’s network, even if it says ATT Mexico. You are still roaming and subject to whatever conditions are imposed on roaming by that carrier which could include reduced data speeds. See if you have the option of selecting what carrier you connect to.It is important to back up your device before doing this. For instructions visit our Device How to Page and select the Make and Model of your device. Thank you for being part of the Community Forums, and have a great weekend. In some cases, powering down the phone for 3-5 minutes has resolved the data access issue.May 8, 2023 · AT&T Community Forums. Wireless. Features & Services. Data & Messaging Features, ... Cellular Data not working. Gift your grad endless possibilities. Celebrate right now and connect them to their brightest future. Dec 7, 2022 · Follow these tips if your mobile data isn't working Turn your phone off and back on. Make sure mobile data or cellular data is turned on. Disconnect from Wi-Fi ® to test your mobile data. Turn off airplane mode. It is important to back up your device before doing this. For instructions visit our Device How to Page and select the Make and Model of your device. Thank you for being part of the Community Forums, and have a great weekend. In some cases, powering down the phone for 3-5 minutes has resolved the data access issue.Step 1: Connect your iPhone to a computer with the help of a cable and wait until your computer detects the device. If it doesn’t get detected, enter into the DFU restore mode to utilize the FixGo tool. Step 2: Download the latest firmware on your device and for this, click on “Download” button.2. Check Cellular Data Settings. To be on the safe side, take a look at cellular data settings and make sure it is turned on. Go to "Settings -> Cellular/Mobile Data" and make sure the toggle next to "Cellular Data" or "Mobile Data" is turned on. If it's already on, turn it off and back on again. 3.Land in Lisbon, Amsterdam, Copenhagen — all works instantly with european networks, data, roaming etc. Land back in Boston, no connencitvity, emergency calls only. Shut the phone down, fiddle with SIM removal, turn the phone on, turn off, reinsert the SIM, turn on and, with some luck (not always!!!!) ATT cellular will reconnect.Mar 21, 2023 · It can take two to five days for data use to post in myAT&T, so amounts shown online may not reflect all use since your last bill. Time stamps for current data or text usage may be off by up to 4 hours in myAT&T. Here are some things to keep in mind: We usually update recent data use every three hours. Settings->Cellular->Cellular Data Options->Enable LTE->Voice & Data (select Voice & Data option) Android. Go to Settings > Connection > Mobile networks > Enhanced LTE services and select on. Once complete, please ensure you power your phone off and back on to establish a fresh connection with the network.This is what I did. 1.Insert at&t prepaid sim card. 2.Go to Setting, General, and VPN. 3.Delete former VPN setting of another sim card. 4.Then restart iPhone. 5.Date will work under the new VPN setting. The setting will be automatically set up with the at&t sim card.So, in this method, you need to enable the right network mode to fix Mobile data not working on Android. First, head to Settings > Mobile Data > Network Mode and switch to the appropriate network mode. 10. Reset Network Settings On Android. Resetting the network settings is another best thing you can do to resolve mobile data not working issues.Oct 25, 2020 · Cellular data not working after upgrade. Switched from an 11 to a 12, both purchased from Apple, and cellular data does not work. I can make/receive calls and texts but cannot use data. Three calls with AT&T, restarted phone, toggled airplane mode and cellular options, and reset network settings. Was supposed to get a call back from someone ... Dec 7, 2022 · Try a manual scan and select a network other than the one you're currently on. This won’t work in Mexico or Canada. Restart your device. If it has a removable battery, take it out and put it back in. Remove your laptop card if you’re using one, restart your laptop, and reinsert the card. Use the international coverage map to confirm data ... May 8, 2023 · AT&T Community Forums. Wireless. Features & Services. Data & Messaging Features, ... Cellular Data not working. Gift your grad endless possibilities. Celebrate right now and connect them to their brightest future. 1. From the home screen, select the Settings app. 2. Select Cellular. To turn cellular data on or off, select the Cellular Data switch. Note: To turn LTE data on or off select Cellular Data Options > Enable LTE > desired option. Learn more from the Apple support article About cellular data settings and usage on your iPhone. 3. Jun 27, 2022 · For Android 11 and earlier: Go to "Settings -> Network & Internet -> Mobile network." Make sure "Mobile data" is switched on, then tap "Data warning & limit." Here you need to make sure that "Set data limit" is switched off, or at least no lower than the limit provided by your network. Cellular data not working. Out of nowhere, my cellular data stopped loading anything despite “5ge” being in the corner with full bars. I’ve tried powering off my phone, taking the SIM card out, nothing is working. I can’t troubleshoot the network because I would have to sign in and I do not pay for this account. My dad does.Jun 27, 2022 · For Android 11 and earlier: Go to "Settings -> Network & Internet -> Mobile network." Make sure "Mobile data" is switched on, then tap "Data warning & limit." Here you need to make sure that "Set data limit" is switched off, or at least no lower than the limit provided by your network. iPad is not connect to cellular. Recently anytime I disconnect my iPad from the cellular network it won’t recognize the cellular connection. It worked perfect until a couple of weeks ago. For a bit turning it off and back on worked but now it is not. I have reset the network settings, turned on airplane mode and everything, but nothing works.Data over 5G just stopped working recently. I could reset my network settings and it would work for a few minutes then stop working again. I was able to switch Voice & Data to LTE and now apps and data are working. Settings -> Cellular -> Cellular Data Options -> Voice & Data -> LTE. 0.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?@ATT even on Sunday you slow my internet on 5 devices so i cannot work! Pay your bill and you too can have your business shut down. Do not sign your business up to att. Stephen Dorsey (@ColorFaded) reported 25 minutes ago @ATT @ATTexplore How about we celebrate by getting faster Internet speeds. AT&T is an American telecommunications company, and the second largest provider of mobile services and the largest provider of fixed telephone services in the US. AT&T also offers television services under their U-verse brand. AT&T has near-national wireless coverage.Current problems and outages | Downdetector. User reports indicate no current problems at AT&T. AT&T offers local and long distance phone service, broadband internet and mobile phone services to individuals and businesses.@ATTHelp @ZachWygal No. They do not fix anything and never refund or follow through on phony offers. Jeff Radebaugh (@Heffevi) reported 27 minutes ago @ATT no ABC still. You guys need to figure this out but you can do it with one less customer. AT&T TV has enough performance issues that you can’t also have a content problem. #tvpromise Check to see if any devices activate around the time you see service drops. Restart your device. Check out causes why your device may be slowing down. Give this a try and let us know what you find. While time of day can be a factor in impacting your cellular data strength, so, too, can other things like equipment and the environment.Sep 6, 2022 · There is no connection between cellular data and factory reset. Thus, be mindful before adapting the method to fix the mobile data not working problem. Here are 10 useful ways to fix cellular data not working. 1. Fix Cellular Data Not Working without Data Loss (Recommended) 2. Turn Off Airplane Mode; 3. Turn On Cellular Data; 4. Restart Your ... Feb 13, 2023 · To use cellular data, make sure Data Roaming is turned on in your device settings. To call or send a message to the U.S., dial +1 followed by the 10-digit number. The “+” sign usually appears if you press and hold the “0” key on your dial pad. To call or send a message to another country, dial + (country code) followed by the local ... From the home screen, select the Settings app > scroll to and select General > scroll to and select Reset > select Reset Network Settings > select Reset Network Settings again to confirm. Note: To turn LTE data on or off select Cellular Data Options > Enable LTE. This information will help us investigate your concerns further so that we're able ...Dec 6, 2021 · 64.5K Messages. 2 years ago. You aren’t really connected to ATT’s network, even if it says ATT Mexico. You are still roaming and subject to whatever conditions are imposed on roaming by that carrier which could include reduced data speeds. See if you have the option of selecting what carrier you connect to. May 31, 2023 · Turn off airplane mode.Most phones show an airplane icon when airplane mode is on. Check your SIM card.You may have to take it out and put it back in if your phone displays Insert SIM or Emergency Call Only. The closer to -120 dBm, the worse your signal. Let’s say you have -50 dBm signal outside (full bars) but have a building or factory lined with any or all types of metal: steel, aluminum, brass, copper, iron, etc. This means it can potentially subtract an additional -50 dBm once it reaches inside for a signal strength of -100 dBm (1-2 bars).Explore voicemail, messaging, and apps to help you and yours stay safe and connected. Discover ways to stay connected when you travel. Find out how to connect through Wi-Fi, mobile hotspots, and our wireless network. We’ve got you covered. Check out your plan info, reward programs, and device protection options.Jul 25, 2023 · This feature could still be turned on if you have no data connection. If Airplane Mode is turned off, you can try turning it on and off again. A cycle in and out of this mode has been known to fix mobile connections for some people. Disable Wi-Fi. This shouldn't happen, but sometimes it does, especially on older iPhone models. Properly working cellular service is important during electrical power loss, @Aurora69! Let's look into what's disrupting your iPhones' communication in a power outage. If you're at home and your devices are connected via Wi-Fi Calling , when power is unavailable, you will want to keep an eye on your network connection strength which is ...To use cellular data, make sure Data Roaming is turned on in your device settings. To call or send a message to the U.S., dial +1 followed by the 10-digit number. The “+” sign usually appears if you press and hold the “0” key on your dial pad. To call or send a message to another country, dial + (country code) followed by the local ...Apr 2, 2023 · Make sure mobile data or cellular data is turned on. (This is important because if somehow your data was turned off, this would hinder your connection, so it's always good to just double-check that mobile data is enabled) Disconnect from Wi-Fi ® to test your mobile data. (This helps because tunring off Wi-Fi will ensure that this feature ... Find outages in your area Select your service Wireless (mobile phone) AT&T Internet, AT&T Phone, or U-verse® TV Get help with Wi-Fi® weak spots Manage connected devices Check for outagesIt is important to back up your device before doing this. For instructions visit our Device How to Page and select the Make and Model of your device. Thank you for being part of the Community Forums, and have a great weekend. In some cases, powering down the phone for 3-5 minutes has resolved the data access issue.Turn Off Wi-Fi on Your Phone. Disable and Enable Mobile Data Mode. Make Sure Your SIM Card Is Properly Inserted. Check the Data Limit/Data Plan of Your Carrier. Change Your Preferred Network Type. Reset Network Settings on Your Android Phone. Perform a Software Update on Your Phone.Make sure you're properly inserting the SIM card and confirm that your cellular data is enabled. Resetting your network settings in your device will refresh your connection which will improve your service. Using your Samsung Galaxy S21, go to: Settings>General Management>Reset>Reset network settings. There's a device support tool we offer that ...Find help for your AT&T Wireless℠ plan, international plan, or parental controls. Learn how to help your wireless signal with AT&T Cell Booster. Explore wireless add-ons, apps, and more.Feb 4, 2022 · Make sure you're properly inserting the SIM card and confirm that your cellular data is enabled. Resetting your network settings in your device will refresh your connection which will improve your service. Using your Samsung Galaxy S21, go to: Settings>General Management>Reset>Reset network settings. There's a device support tool we offer that ... May 8, 2023 · AT&T Community Forums. Wireless. Features & Services. Data & Messaging Features, ... Cellular Data not working. Gift your grad endless possibilities. Celebrate right now and connect them to their brightest future. Dec 10, 2022 · 2. Check Cellular Data Settings. To be on the safe side, take a look at cellular data settings and make sure it is turned on. Go to "Settings -> Cellular/Mobile Data" and make sure the toggle next to "Cellular Data" or "Mobile Data" is turned on. If it's already on, turn it off and back on again. 3. Aug 6, 2021 · Check your wireless usage to confirm data on your plan. Also, check out your AT&T Prepaid Coverage for connection and signal strength. Lastly, here is our helpful Troubleshoot And Resolve Tool to help fix your mobile data connection, go to Fix An Issue > Connection> Call& data quality/Internet and make sure you have correct device at Change Device. Oct 17, 2022 · I am on AT&T with an iPhone 12, iOS version 16.0 (20A362). As of yesterday my cellular data stopped working — only WiFi will give me Internet. I’ve switched cellular connectivity on and off, up... Find outages in your area Select your service Wireless (mobile phone) AT&T Internet, AT&T Phone, or U-verse® TV Get help with Wi-Fi® weak spots Manage connected devices Check for outagesThis is what I did. 1.Insert at&t prepaid sim card. 2.Go to Setting, General, and VPN. 3.Delete former VPN setting of another sim card. 4.Then restart iPhone. 5.Date will work under the new VPN setting. The setting will be automatically set up with the at&t sim card.Out of nowhere, my cellular data stopped loading anything despite “5ge” being in the corner with full bars. I’ve tried powering off my phone, taking the SIM card out, nothing is working. I can’t troubleshoot the network because I would have to sign in and I do not pay for this account. My dad does.@ATTHelp @ZachWygal No. They do not fix anything and never refund or follow through on phony offers. Jeff Radebaugh (@Heffevi) reported 27 minutes ago @ATT no ABC still. You guys need to figure this out but you can do it with one less customer. AT&T TV has enough performance issues that you can’t also have a content problem. #tvpromise Swipe down from the top right of the screen to see the Control Center and look for the Mobile Data icon, which is an antenna to the right of Airplane mode. If it's off, tap it to turn it on ... Find help for your AT&T Wireless℠ plan, international plan, or parental controls. Learn how to help your wireless signal with AT&T Cell Booster. Explore wireless add-ons, apps, and more. Properly working cellular service is important during electrical power loss, @Aurora69! Let's look into what's disrupting your iPhones' communication in a power outage. If you're at home and your devices are connected via Wi-Fi Calling , when power is unavailable, you will want to keep an eye on your network connection strength which is ...Reder’s suggestions on Fix Cellular Data Stopped Working – No Internet, Solution #1. Make Sure the Cellular/Mobile Data toggle is turned ON. Solution #2. Turn On Airplane Mode On and Turn off. Solution #3. Check for Carrier Update on your iPhone. Solution Fix #4. Restart your iPhone, Cellular iPad.May 8, 2023 · AT&T Community Forums. Wireless. Features & Services. Data & Messaging Features, ... Cellular Data not working. Gift your grad endless possibilities. Celebrate right now and connect them to their brightest future. Properly working cellular service is important during electrical power loss, @Aurora69! Let's look into what's disrupting your iPhones' communication in a power outage. If you're at home and your devices are connected via Wi-Fi Calling , when power is unavailable, you will want to keep an eye on your network connection strength which is ...Im facing the same issue as well. I can text and talk but cannot access internet on my iphone. I tried all possible steps from online troubleshooting tool. Switched sim’s to different device and still no internet. Also, verified its not my iPhone phone problem, cause internet works with other at&t sim’s. My recent data usage is 0 if you ...To do this, go to settings and tap on “Wireless Networks” or “Connections.”. From there, switch on Airplane mode and turn off your phone. Wait for half a minute and then turn your mobile phone back on. Go to the same settings section and turn off Airplane mode. After that, check if your mobile data is working again.Properly working cellular service is important during electrical power loss, @Aurora69! Let's look into what's disrupting your iPhones' communication in a power outage. If you're at home and your devices are connected via Wi-Fi Calling , when power is unavailable, you will want to keep an eye on your network connection strength which is ...Jan 12, 2023 · Open the Settings app. Tap Cellular. Make sure Cellular Data is toggled on. Make sure the apps you want to use cellular data for are toggled on. Note: if you are traveling internationally, follow these steps to make sure your iPhone is set up for data roaming: Opening the Settings app. Tap Cellular. Select your service. Wireless (mobile phone) AT&T Internet, AT&T Phone, or U-verse® TV. Get help with Wi-Fi® weak spots. Manage connected devices. Check for outages.Apr 2, 2023 · Make sure mobile data or cellular data is turned on. (This is important because if somehow your data was turned off, this would hinder your connection, so it's always good to just double-check that mobile data is enabled) Disconnect from Wi-Fi ® to test your mobile data. (This helps because tunring off Wi-Fi will ensure that this feature ... Find outages in your area Select your service Wireless (mobile phone) AT&T Internet, AT&T Phone, or U-verse® TV Get help with Wi-Fi® weak spots Manage connected devices Check for outages Reder’s suggestions on Fix Cellular Data Stopped Working – No Internet, Solution #1. Make Sure the Cellular/Mobile Data toggle is turned ON. Solution #2. Turn On Airplane Mode On and Turn off. Solution #3. Check for Carrier Update on your iPhone. Solution Fix #4. Restart your iPhone, Cellular iPad.formerlyknownas. Is your phone indicating that data is turned off? Or when you try to use data does it just load and load or say cannot connect to the network?. More information would be helpful. I'm connected but it just loads or says I'm not connected I have full bars and it says 5g.See full list on whistleout.com See full list on whistleout.com I called them again and they told me they need to re-activate the SIM, so they did that and it's still not working. I tried Resetting my network, re-insert SIM, toggled cellular data and airplane mode on/off and also removed International Day Pass from my account, but still no luck. When I checked my data balance by dialing *3282* it says I ...Make sure that Set Automatically is turned on. Turn on Airplane Mode for about 30 seconds. Then turn it off again and let your iPhone automatically select the best network. If you see No Service or SOS only in the status bar of your iPhone, open Settings and tap Cellular, or Cellular Data, or Mobile Data. Tap Cellular Data Options and make sure ...Feb 7, 2023 · Wait for half a minute and then turn your mobile phone back on. Go to the same settings section and turn off Airplane mode. After that, check if your mobile data is working again. To double-check accurately, make sure you’re only connected to your cellular data services and make sure your mobile WiFi is turned off. 3. 1. From the home screen, select the Settings app. 2. Select Cellular. To turn cellular data on or off, select the Cellular Data switch. Note: To turn LTE data on or off select Cellular Data Options > Enable LTE > desired option. Learn more from the Apple support article About cellular data settings and usage on your iPhone. 3. Mar 21, 2023 · It can take two to five days for data use to post in myAT&T, so amounts shown online may not reflect all use since your last bill. Time stamps for current data or text usage may be off by up to 4 hours in myAT&T. Here are some things to keep in mind: We usually update recent data use every three hours. Find outages in your area Select your service Wireless (mobile phone) AT&T Internet, AT&T Phone, or U-verse® TV Get help with Wi-Fi® weak spots Manage connected devices Check for outages Jul 18, 2022 · I have tried all of those solutions. I live in Los Angeles and my cellular data works just fine there. I’ve been in Las Vegas for about two weeks and my cellular data stops working out of nowhere. I have an iPhone 12 and my zip code where I’m located right now is 89030. Open the Settings app. Tap Cellular. Make sure Cellular Data is toggled on. Make sure the apps you want to use cellular data for are toggled on. Note: if you are traveling internationally, follow these steps to make sure your iPhone is set up for data roaming: Opening the Settings app. Tap Cellular.Select your service. Wireless (mobile phone) AT&T Internet, AT&T Phone, or U-verse® TV. Get help with Wi-Fi® weak spots. Manage connected devices. Check for outages.Check your wireless usage to confirm data on your plan. Also, check out your AT&T Prepaid Coverage for connection and signal strength. Lastly, here is our helpful Troubleshoot And Resolve Tool to help fix your mobile data connection, go to Fix An Issue > Connection> Call& data quality/Internet and make sure you have correct device at Change Device.2. Check Cellular Data Settings. To be on the safe side, take a look at cellular data settings and make sure it is turned on. Go to "Settings -> Cellular/Mobile Data" and make sure the toggle next to "Cellular Data" or "Mobile Data" is turned on. If it's already on, turn it off and back on again. 3.Check to see if any devices activate around the time you see service drops. Restart your device. Check out causes why your device may be slowing down. Give this a try and let us know what you find. While time of day can be a factor in impacting your cellular data strength, so, too, can other things like equipment and the environment.AT&T is an American telecommunications company, and the second largest provider of mobile services and the largest provider of fixed telephone services in the US. AT&T also offers television services under their U-verse brand. AT&T has near-national wireless coverage.Sep 6, 2022 · There is no connection between cellular data and factory reset. Thus, be mindful before adapting the method to fix the mobile data not working problem. Here are 10 useful ways to fix cellular data not working. 1. Fix Cellular Data Not Working without Data Loss (Recommended) 2. Turn Off Airplane Mode; 3. Turn On Cellular Data; 4. Restart Your ... If you have an iPhone 4 or higher and data is not working after taking these steps, please contact customer service for assistance at (888) 345-5509. If you have an Apple iPhone 3GS, data can be configured once the phone has been updated to iOS 5 or higher. These phones can then work for cellular data, however picture messaging cannot be ...2. Check Cellular Data Settings. To be on the safe side, take a look at cellular data settings and make sure it is turned on. Go to "Settings -> Cellular/Mobile Data" and make sure the toggle next to "Cellular Data" or "Mobile Data" is turned on. If it's already on, turn it off and back on again. 3.Step 1: Connect your iPhone to a computer with the help of a cable and wait until your computer detects the device. If it doesn’t get detected, enter into the DFU restore mode to utilize the FixGo tool. Step 2: Download the latest firmware on your device and for this, click on “Download” button.Step 1: Connect your iPhone to a computer with the help of a cable and wait until your computer detects the device. If it doesn’t get detected, enter into the DFU restore mode to utilize the FixGo tool. Step 2: Download the latest firmware on your device and for this, click on “Download” button.AT&T Community Forums. Wireless. Features & Services. Data & Messaging Features, ... Cellular Data not working. Gift your grad endless possibilities. Celebrate right now and connect them to their brightest future.For Android 11 and earlier: Go to "Settings -> Network & Internet -> Mobile network." Make sure "Mobile data" is switched on, then tap "Data warning & limit." Here you need to make sure that "Set data limit" is switched off, or at least no lower than the limit provided by your network.Jan 13, 2022 · Let’s meet in a Direct Message (DM) regarding your new iPhone 13 and its inability to use cellular data. Please check your Direct Message Inbox. It’s the chat icon next to the bell icon in the upper right corner of the Forums. Looking forward to helping you! Lar, AT&T Community Specialist My cellular data stopped working where I could only have coverage/receive messages/texts when I was in a wifi area. However, I could not access anything with wifi off and cellular on.Jun 1, 2022 · The first one involves resetting your network settings as mentioned, by @sandblaster. This will be the seventh step on this page. This options resets Wi-Fi networks and passwords, cellular settings. Check out the steps below for additional steps to resolve your data connection. Go to Settings> Cellular Settings> Network> Reset Network. Nov 13, 2021 · Your cellular data should immediately start working again. Contact your carrier's support if you have issues doing so, and consider limiting your data usage in the future to avoid running out again. 2. Ensure Airplane Mode Is Turned Off. Airplane mode disables your iPhone’s cellular, Wi-Fi, and Bluetooth connections. Check the cellular service eligibility of your Apple Watch. Ensure cellular connection is activated on Apple Watch. Turn off and on Airplane Mode. Restart your Apple Watch. Update watchOS. Check for carrier settings update. Remove and re-add cellular plan. Check the specific apps. Reset network settings on iPhone.If your carrier allows it, you can view your APN settings in one of the following locations: Settings > Cellular > Cellular Data Network. Settings > Mobile Data > Mobile Data Options > Mobile Data Network. If your device doesn't have either option, contact your carrier. To change your settings, tap each field and enter the details from your ...Mobile data down all day today until around 6pm when the 4G icon briefly appeared for about 10 seconds then disappeared. I walked the 1000 meters today outside and did not get any mobile data or 4G. I only can text and make phone calls. That is it right now. Mobile data/4G will probably turn on around 10pm like it did yesterday.Jun 13, 2018 · It is important to back up your device before doing this. For instructions visit our Device How to Page and select the Make and Model of your device. Thank you for being part of the Community Forums, and have a great weekend. In some cases, powering down the phone for 3-5 minutes has resolved the data access issue. SAHMED. tried 1. restore the phone erase and reset 2. Change the SIM (twice) 3. reset network settings 4. support team change to new number and internet start working but when they move back to old number no internet.Land in Lisbon, Amsterdam, Copenhagen — all works instantly with european networks, data, roaming etc. Land back in Boston, no connencitvity, emergency calls only. Shut the phone down, fiddle with SIM removal, turn the phone on, turn off, reinsert the SIM, turn on and, with some luck (not always!!!!) ATT cellular will reconnect.Options. 03-22-2023 10:00 AM in. Galaxy S23. For anyone else looking here with the same issue, I called T-mo and had them reset my network, this worked temporarily but the problem is back. You can call in and ask them to reset it for you, may help for a little bit or could fix your issue altogether.Follow these tips if your mobile data isn't working Turn your phone off and back on. Make sure mobile data or cellular data is turned on. Disconnect from Wi-Fi ® to test your mobile data. Turn off airplane mode.Nov 30, 2018 · Since the update my mobile data stopped working. I tried everything, changing the APN settings, toggling, talking to SAMSUNG India and US to no avail. Here is what was wrong: It seems like AT&T has 3G and 4G/LTE sims this problem is with their 3G sim it doesnt work with the new update unless you roll back to 3G APN settings. .