Share your experience!
Hello @AJ0807
If this issue is too much to handle, or if you have excessive battery drain or lag along with it, then I'd suggest that you do a software repair using Xperia Companion. This will do a clean installation of the latest firmware and will also wipe your internal memory. Follow the steps given in the blue link, do not connect your phone until prompted to press volume down while plugging USB cable.
Don't forget to backup using Xperia Companion before you perform the repair process, but don't backup apps or settings.
i have a possible slution 1.the problem cused by the msm8939 chip that heat up match 2. to fix that you need to be rooted then download no frils cpu from play store then lower cpu speed and set profile to power saving and applay then reboot note: 1.do this at your own risk 2.this will slow your phone a bit but remember your phone dosent restart or heat up match if you dont want this methoud you have to update the phone to the latest vertion with flash tool if nothing fixed you have to replase the motherboard soory for my bad english