Software bugs on our Android devices, while a good majority of the time are nothing more than minor annoyances, can occasionally be much greater than that. Take a handful of HTC One M8 and M7 users who are reportedly no longer able to perform one of their phone’s most basic of functions: make a voice call.

Right now, there doesn’t seem to be a rhyme or reason on why the functionality stopped, or even which HTC One M8s and M7 are affected (A&T models only?), but users describe a problem where both the caller and receiver can’t hear so much as a dial tone when placing a call. There are a number of temporary fixes (like clearing cache/data on Google Play Services, Google Play Framework, or even uninstalling Chrome), but some of those users have noticed the issue returning shortly after that. While we’d hate to suggest a factory reset, but we noticed someone had luck going that route (but understandable if you want to avoid that).

Some are guessing it could have had something to do with a recent HTC Service Pack update in the Play Store as many a user are flocking there to voice their displeasure. I know both my One M8 on both T-Mobile and Verizon are working without a hitch and they’ve all been updated to the most recent Service Pack, so really, who knows.

We’ll reach out to HTC for comment but in the meantime have any of you noticed your HTC One M8 or M7 is no longer able to make calls? Did you find a fix?

Thanks, @RobertoRaymon!

[XDA, Google Play]