Hello guys,
I own Fire Phone running Stock ROM 4.6.6.1, actually not rooted. I'm facing one big problem - my calls keep crashing. I can make a call for some time (5, 10, 50 mins) and after same time it crashes saying it failed.

Signal strenght is perfect on both sides. Factory reset didn't help..

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References:https://forum.xda-developers.com/fire-phone/help/phone-calls-crashing-t3718162

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