Sudden battery drain/not charging/lost Wifi

Hi, Over the last 24 hours i've notice my Xperia Z2's battery is draining very quickly, even when asleep. Even when it is plugged in charging, i keep getting messages saying the phone is unable to charge as it is using too much power. And previously i could charge the phone overnight fully, now it doesnt get close to 40% In addition to this ive noticed it is kicking out a lot of heat at the top of the phone, and also i can no loger connect to the internet via wifi. Everything else seems ok, and i have managed to back up my data to an sd card. I havent added any new apps recently. I've had the phone for less than a year and as far as i know it hasnt had any heavy drops or anything. Has anyone got any cheap fix ideas or will it need to be sent of for repair? Thanks in advance Simon 

Hi Simon, first thing i would do is try running it in Safe Mode fo a while.....even tho you've not added any new Apps lately there could be one acting up, Sfe Mode will determine this............if no difference then my next step would be to do a PCC Repair but just double check that you do as mentioned have everything backed up. Keep us updated  http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008 http://support.sonymobile.com/us/tools/pc-companion/
http://support.sonymobile.com/global-en/tools/bridge-for-mac/ http://talk.sonymobile.com/thread/36355

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