If you’re encountering random reboots on your T-Mobile iPhone, you’re not the only one. Several users on social media are reporting that iPhones on the Uncarrier are flashing blue for a second, and randomly rebooting every 20 to 30 minutes.
The issue doesn’t appear to be limited to a particular model, with iPhone 5s, iPhone 6 and iPhone 6 Plus users mentioning that they’re facing the same issue on their devices. A particular version of iOS also does not seem to be at fault, with affected users running iOS 8.1 or iOS 8.3.
A Reddit user contacted T-Mobile, with the carrier recommending the following solution:
- Hard restart – hold the power and home buttons down for 10 seconds until the device restarts.
- Clear out your old text messages.
- Do a full factory restore in iTunes, then restore from backup.
The user also wrote, “the sense that I got from the technician is that a) they suspect memory problems, and b) they’re getting a lot of calls about it.”
According to the discussion on Apple forums, it looks like the issue is caused by the Wi-Fi calling feature T-Mobile rolled out last year. Disabling Wi-Fi calling and VoLTE seem to fix the issue for a few users on the forums. If your iPhone is also going through random reboots, try disabling those services before doing a factory reset.