My iPhone 16e experiencing app crashes, iTunes sync error, and cellular issues

It sounds like you may be having hardware issues. Let Apple assess your iPhone. Start here.

Apple Service and Repair for iPhone - Apple Support

Seems rather like bad hardware, but I’d use Apple Devices app to get a backup, and to reset and reload.

Install the Apple Devices app on Windows - Apple Support

If that doesn’t work, you’ll still (hopefully) have a recent backup of your data for the call to Apple Support.

iPhone16e-User wrote:

When I plug the iPhone into iTunes on my PC I sometimes get an error that says "The iPhone "iPhone 16e" cannot be synced. An internal device error occurred".

This may help --> Connecting your iPhone to your Windows PC… - Apple Community

There are two types of cables: one designed solely for charging, and another that both charges and enables data transfer.

Search for accessories that have completed MFi certification. Once an accessory has completed MFi certification requirements and is reported to Apple as sold/distributed, it will be searchable in our public database of authorized Lightning, headset, charging, iAP-enabled, and Find My network-enabled accessories.

Learn how to identify counterfeit or uncertified Lightning-based accessories.

You may try this (The suggestion is intended as a guide to help you find the right options and should not be interpreted as an endorsement or promotion of any product. Please conduct your own research and make an informed purchasing decision.) --> https://amzn.in/d/06mPoWvc

iPhone16e-User wrote:

In addition, cellular does not work inside multiple buildings miles apart from each other in which it used to work completely fine, now I have to go outside to use the phone. I also rarely ever get more than 2 bars of service now even in a populated area.

If you see No Service or Searching on your iPhone or iPad

1. Check your coverage area. Make sure that you're in an area with cellular network coverage. ... 
2. Restart your iPhone or iPad. Restart your device. ... 
3. Check for a Carrier Settings update. ... 
4. Take out the SIM card. ... 
5. Reset your Network Settings. ... 
6. Update your iPhone or iPad. ... 
7. Contact your carrier. ... 
8. Get more help.

If you see No Service or Searching on your iPhone or iPad ...

Remove your SIM card from the SIM card tray and then put the SIM card back. ... Make sure that the SIM tray closes completely and isn't loose. If you use a SIM tray from a different model iPhone, iPad, or from another phone manufacturer, it might not fit properly.

If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad ...

Learn what to do if you see a SIM not supported alert.

If you see No Service, Searching, or SOS on your iPhone or iPad

1. Check your coverage area. ... 
2. If you see SOS or SOS only. ... 
3. If you're on 3G network. ... 
4. Restart your iPhone or iPad. ... 
5. Check for a Carrier Settings update. ... 
6. Turn your cellular line off and back on. ... 
7. Reset your Network Settings. ... 
8. Update your iPhone or iPad.

More items...•

If you see No Service, Searching, or SOS on your iPhone or iPad

To be able to use any SIM across the globe you must have "No SIM Restriction" against Network Provider Lock. Please refer to the pic below.

If you see No Service or Searching in the status bar on your iPhone or iPad (Wi-Fi + Cellular), your device isn't connected to a cellular network. If you see SOS or "SOS only" in the status bar, your device can still make emergency calls.

If you see No Service, Searching, or SOS on your iPhone or iPad

iPhone16e-User wrote:

Last week I started having issues with apps crashing.

Close and reopen the app Force the app to close. Then open the app to see if it's working as expected. Restart your device. Delete the app, ...

If an app on your iPhone or iPad stops responding, closes ...

For what it’s worth, I have an iPhone 16e I bought in April 2025 and I started specifically seeing the app crashing issues at nearly the same time. However, it’s not all apps, only some such as Yahoo Mail and LinkedIn.

Exactly same issue started happening on my Iphone 16e since last couple of weeks. Did you get any leads from Apple Support?