Hello! With my Ip began to happen strange things. Namely, quite often (though not always) when the standby time is displayed on the screen + undying white background illumination. Besides, the phone quite often automatically turns off. Reconstructed phone in Itunes but that did not help. The situation does not occur at all when in sleep mode settings changed to "never." I went too soft on 3.1.3 but the problem still occurs. What do you advise?