Hey peeps, I've been using my 5S for barely 2 weeks and I noticed something wrong with my cellular data. Whenever I'm in an area with no signal(i.e. basement parking lot) the cellular data(gprs to lte) is not detected automatically once signal is restored. I'd have to reset the signal, usually by turning airplane mode on and off, then only the cellular data will be detected. Thing is, whenever I on and off airplane mode, the signal and cellular data has no problem being detected, pretty quick actually.
So I'm wondering if this is a hardware issue or just a bug. I'd really hate to have to send my phone in to Apple.

Appreciate any help or advice. Thanks!

The power button on my iphone 4S is stuck, basically i can't press it. So now i can't switch it off unless the battery dies or put it on standby without it automatically doing so.
Is this easily fixed and know where i can send the phone for repair?