I am on my second .M8 with Sprint and no luck receiving calls on LTE, how can I get this working?

[AC Question]

I am on my second .M8 with Sprint and no luck receiving calls on LTE

The first phone, they exchanged. Told me it was a bad antenna. New one worked for a few days and stopped today.

 

[Rukbat]

Re: I am on my second .M8 with Sprint and no luck receiving calls on LTE

Bring it back. Keep bringing the bad ones back until you get a good one. If the warranty period is getting close, ask them to not in the record that you haven't yet received a working phone, so the warranty period hasn't yet started. (It might cost HTC a lot, but it's their fault for shipping bad phones so they should be the ones to eat the cost.)