Why is my Lumia 640 XL (purchased from AT&T) randomly rebooting itself 4 times a day?
I've already gone in and had them swap the SIM cards, and I spent a day with the SD Card removed. No difference.
It just keeps rebooting...Do I have a dud that I should see if they will replace? Or are there other possible fixes?
I've already gone in and had them swap the SIM cards, and I spent a day with the SD Card removed. No difference.
It just keeps rebooting...Do I have a dud that I should see if they will replace? Or are there other possible fixes?