We’ve got good news and bad news for people using an iPhone 6, 6 Plus, or SE on the T-Mobile network. The good news is, if you haven’t already installed iOS 10, you can avoid some major connectivity issues hitting other customers. The bad news is, if you have already upgraded to the latest operating system, well, you may be experiencing some major connectivity issues.

Several iOS users on T-Mobile have reported having a hard time connecting to the T-Mobile network after they updated to iOS 10, TmoNews notes, with some saying they’re losing the signal and can only find it again by restarting their phones. The Verge staff also noted connectivity issues among its ranks in the last two days.

T-Mobile confirmed the problems via Twitter today, with CEO John Legere saying that Apple is working on a fix:

T-Mobile VP Neville Ray chimed in noting that the fix is expected within 48 hours. He points out the only known temporary fix: the ol “turn it off and turn it back on again” method that users have already been forced to employ:

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