Same thing is happening to me. I will be texting back and forth and then all of a sudden I don't get their texts anymore. The only way I know they sent them is that I can see in on my carrier's logs and they can show me screen shots of their texts on their phones. Works fine then just stops
Info:
- Nexus 5
- AT&T
- Only AT&T texts, all others work fine including Google Voice (or so I think, not sure how to tell I haven't gotten texts I don't get)
- AT&T opened up a case after repeated calls, trying all sorts of resets, new sim card, etc. They aren't sure but will get back to me by 7/16. Right now they think it is the phone.
- I use Hangouts
- Tried going back to 3G from LTE and turning Wifi to "Keep Wi-Fi on during sleep" to Never. Doesn't seem to help but to early to tell for the second change.