Help! Since I installed the samsung updates last week (lollipop), my SG S4 now switches itself off randomly, and even with the battery fully charged it is draining from 100% within 2-3 hours, even with no use. It will only switch on again when plugged into a charger. I've tried switching off apps, and I have done a hard reset on the phone, but it still switches itself off and crashes. It generally allows me to do 1 text or call before it switches itself off mid-use. What can I do now considering I have reset it and it is no better?
Currently it is not useable as a mobile phone and I'm considering returning it and getting a refund!
