I have same issues. I can't call without reboot. My wireless headset work good with Android 6. I like play two games, after this last update..can't play. Only the 2nd sim card work, with 2 sim same network...

Hello, where is your location?

Hungary

Sn tool and restoring imei was goodmy phone. I go back to 0414 version. There work my apps, only my bluethoot headset not work.

I have the same problem after being talking for more than 1 minute the phone reboots, and sometimes you do not need to be pulling, the computer reboots itself

If you can send us the related log, then we can well locate the problem.
enter into the engineer code(by *#9646633#)--log and debugging--MTk logger--click the red icon on the bottom of the screen to start--while the problem comes out, click the button"stop"
Then connecting your PC and send us the MTK log file and time of problem happening.