Spontaneous restarts after Lumia Black

i'm still getting reboots. haven't noticed them so much when in general use once the phone is up and running. but more so if i power down the phone, restart and then i'll get a couple of reboots then. it is as if there is something in the boot process that triggers it. unfortunately i've not go another phone i can use to make a video to show what is going on.

what is worse is i actually did i factory reset and that has not helped. nice waste of a couple of days getting the phone back to my previous pre-factory reset stage :sweaty: anyway, as posted earlier i thought it may be a wifi router problem but i have tried 2 different routers now and am still getting the reboots.

Well I am new here left my iphone 5 in a cab in mexico. I picked a 920 with 8.1 on it and I too am having random reboots. I am down to one a day. I recommend turning off WIFI Sense.
 
Had two restarts in the last 2 hours. Both times while typing in the browser bar. First time it flashed the lower battery symbol upon the reboot even though battery is at 60%.
 
My phone(AT&T unlocked) never rebooted itself till after the update to Dev 8.1. After the first reboot I decided to do a factory reset ,but it rebooted itself again today and so no help there. The battery takes a way big hit after the reboot . I haven't changed anything with my wifi and so I don't think that is the cause.