Hi, I previously raised an issue about not being able to make or take calls, or send/receive SMS:
I have since tried network reset, reseating SIM, getting new SIM, using a new provider, and I'm still having the issue of not being able to make or take phone calls. SMS works intermittently. I have tried two SIMs on other Android devices and they worked there, but not on my GOS P7P. When people call me, it doesn't ring and just goes straight to voicemail, and I get a text to say I got a missed call, but it seems it was dropped. When I call someone, it doesn't ring and eventually drops.