To all the iPhone experts: Lately my fairly new 5S has been restarting (black screen with the Apple logo) when I pull it from my pocket to use it. This seems abnormal but isn't really more than a slight annoyance because it goes pretty quickly. I did a full restore with my computer and iTunes but it did this again once today. Suggestions? When I can if this continues I will try to bring it back to Apple or a Verizon store. I bought it from Verizon, not Apple. Also, another oddity. I have my password keychains set properly I think and there are a couple websites that seemingly randomly drop my password and require me to sign in again. Or shall I say they save the password but sign me out and I have to sign in again even though the respective user names and password windows have my requisite data in them. I'm very pleased with this device so I'm not just being whiny about it. But the constant restarts could be indicative of an issue. Thanks much for any comments or suggestions.