iPhone 7 wifi keeps disconnecting, SMS and mobile data not working, other issues

Hello iPhone fans! Welcome to another #iPhone7 article. This post covers some connection problems we’ve collected so far so hopefully you’ll find our suggestions helpful.

If you are looking for solutions to your own #iOS issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Below are specific topics we’re bringing for you today:

Problem 1: iPhone 7 wifi keeps disconnecting

Hi. This semester I am studying abroad in Shanghai, China, and I’ve brought my iPhone 7 with me (purchased in July 2017). There have been a few instances where my iPhone will lose wifi for periods of time, currently over 36 hours without being able to connect to wifi. It acknowledges wifi in my room and other places on campus, but when I try to connect, it doesn’t. For a brief second the wifi icon will appear in the top left of the interface. As I said, this happens periodically, and currently it is happening for the third time in 6 weeks. After some time, wifi comes back and everything is normal. When this problem is not occurring, it has no problem with wifi. I do have a VPN. — Kyle Yang

Solution: Hi Kyle. Did you try anything different prior to experiencing the problem? For example, if you did install an app lately? It can be the reason why wifi functionality is acting up. To check, consider uninstalling the said app and observe how wifi works. Since you’re the only one who knows the full history of your device, it’s up to you on what to do exactly.

However, if the problem has been occurring for some time now, the best way to isolate the issue is by restoring your phone as a new device. This will allow you to remove all apps and return all software settings back to their defaults. Since we know that at default software settings, wifi works normally, it should help you identify whether it’s a wifi setting problem, or an app problem. To restore your phone, follow these steps:

  1. Create a backup of your files. You can do that in a number of ways but the fastest and most effective way is by using iTunes in your PC or Mac.
  2. Connect your iPhone to your computer with the cable that came with your phone.
  3. We assume you remember your phone’s passcode so simply enter it when you’re prompted for it.
  4. Select your iPhone once iTunes asks you for the specific device.
  5. Once you’re in the Summary panel or screen, select the option that will restore your device (Restore).
  6. Confirm by clicking on Restore button.
  7. Wait for a few moments while iTunes restores your device to its factory settings. It may also take some time if iTunes will need to install an updated operating system version.
  8. After this factory reset, all software settings should be restored to their defaults.
  9. Restore your phone as a new device and not from backup.

Now that your phone has been restored, make sure to check how wifi works for a few days when there are no apps installed. If the wifi connection problem continues, it must be an unknown software or hardware issue. To fix the problem, you must contact Apple so they can either repair or replace the phone.

However, if wifi works fine initially after a full restore, but then returns after you’ve re-installed your apps, then one of them must be causing the trouble. To identify where the problem lies, you must uninstall apps one by one. Be sure to observe how wifi works after you uninstall a single app.

Problem 2: iPhone 7 SMS and mobile data not working

I got my iPhone 7 last night. I can not get any data. The toggle switch is green. So it indicates that it is running. LTE is up as well. I cannot send or receive texts. iMessages or normal text won’t work. I don’t have any internet access or apps such as Facebook or Twitter won’t work either. I have done everything I can think of to fix this issue. I’ve been back to AT&T, changed SIM card, reset network settings…you name it. I’ve tried it. There wasn’t an option to indicate the phone is an Iphone 7 and that field was required so I just put 6s. This phone is an iPhone 7 though. — Jamie Van Houzen

Solution: Hi Jamie. If you can’t send/receive SMS and mobile is not working, there’s high likelihood that it’s an account issue. In other words, there may be a problem in your carrier side that prevents their basic services like SMS and mobile data from working. To check, try inserting your SIM card to another iPhone or phone to see if said services work. If the problem remains even on a second phone, that’s a confirmation of our hunch. To fix it, you must call AT&T so they can reactivate the services.

If AT&T confirms that SMS and mobile data should be working in your phone, consider doing a full factory reset (restore).

Problem 3: How to know if  iPhone 7 is infected with a virus

Recently I’ve had a couple of strange incidents on my iPhone 7. On a website I was browsing all the page was gently pulsing in and out, as in zooming in and out just a little way like breathing. Then today, while typing an extension number on the keypad during a phone call the button I wanted (1) wouldn’t press no response then just after pushing it the screen goes momentarily black. I cancelled the call and rang again and everything was fine. Do I have a virus? Or is it touch screen issues? Thank you. — Emma

Solution: Hi Emma. While there’s a chance that you may have visited a booby-trapped website which may have, in turn, infected your device with a virus, there’s really no way for us to know if this is the case or not. If you suspect that your phone is infected by a virus or malware, try to install an antivirus app and see if it detects anything. Alternatively, you can wipe the phone clean with a full restore (steps provided above) or by erasing all contents and settings. To do the latter, follow these steps:

  1. Sign out of your iCloud account (if applicable).
  2. Go to Settings.
  3. Tap General.
  4. Tap Reset.
  5. Tap Erase All Content and Settings.

Keep in mind that viruses can also be spread via apps so even if you don’t visit any malicious website, you may still be infecting your phone with apps. When it comes to apps, it’s good to have a suspicious mindset. Developers have varying reasons why they build apps though most of them have something to do with money. If they can’t monetize their products via legit means, they may resort to less legal ways such as inserting codes that will allow ads to regularly pop up. Worse, some developers may even allow their legit apps to open a backdoor to allow other malicious codes to take control of your phone, or steal personal information. If you tend to install apps without checking where they’re from, or whether their developer can be trusted, you’ll most likely end up with an infected device or compromised phone.

Problem 4: iPhone 7 wifi loses connection when leaving room where router is located, front camera is blurry

Hi! My daughter has an iPhone 7. We all have iPhones in the family and just hers loses reception to our wifi when she leaves the room where the router and modem are. We tried toggling the wifi.. plane mode and Bluetooth. We also reset it and hard reset. We removed the network connection and reinstalled. Nothing has worked. Could something just be broken internally with the phone?

I have five kids and I’m a single mom… so I’m trying to troubleshoot before spending money. Thank you!

Also I have an iPhone 6 Plus… bought used. The front facing camera is fuzzy and when I get phone calls it is very hard to hear the person talking unless I have the speaker on. Any ideas for these issues as well? Thank you so much for your time!! — Jessicamoon05

Solution: Hi Jessicamoon05. Yes, it’s possible that a phone can suffer internal problems like a broken wifi. If all devices work normally on wifi and only one device is not, then it’s most likely an issue with your daughter’s iPhone 7. To be sure that it’s not a router setting though, we suggest that you call your internet service provider (the company that provided the router and your home internet) and let them help you troubleshoot the issue. If another family member administers your wifi network, it’s possible that he/she may have changed some settings to prevent your daughter’s iPhone to stop working. Thus, it’s important that you talk to your internet service provider (ISP) so they can check if all router settings are set up correctly.

If your ISP will not find anything bad with the router or its settings, then you’ll need to perform a full restore in your daughter’s iPhone to see if it has something to do with the operating system. Be sure not to restore the phone from backup to avoid re-introducing the same bug. Instead, you’ll want to restore it as a new device. If that won’t work either, you must contact Apple for more support.

For your front camera issue, the problem may be caused by the camera app you’re using so be sure to try using another app to see any difference. If the output is still the same, that’s the time that you can try a full restore as well. This will ensure that you remove any operating system glitch, if there’s any. If the camera’s output won’t change at all after that, it’s safe to assume that you have a hardware problem. To fix that, you need to send the phone in.


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Be as detailed as possible when describing your problem to help us diagnose your issue easily. If you can include error messages, popups, attempted troubleshooting steps, and circumstances leading to the problem, that would be very helpful.