okay so my S3 lately has started to crash it restarts itself constantly and sometimes freezes on the loading screen I constantly have to take the battery and restart it its been getting worse by shutting off on phone calls today alone ive had to factory reset it 3 times just for it to turn on properly also im trying to update my phone I just noticed I have 4.1.1 still but every time I press software updat I get a notice about my setting is no longer working I just needx advice on what to.do