I was having issues with my original iPhone 5 constantly losing signal. I did all the troubleshooting steps and it still kept popping up. I brought it into the Apple Store and although they replaced it, they basically told me I was lucky because there was no diagnostic data on it due to me restoring it so many times. The new replacement phone is constantly losing signal again. If I hold it, it drops 2-3 bars. If I place it down, it will have 'No Signal' after a while. My brother's iPhone 5 has none of these problems so I know it is not the location. When I first got it, I restored it a couple of times because I noticed I was having problems right out of the box. Should I try bringing it in again? I know they'll just tell me to restore it and from there waste time to have to bring it back. Should I try maybe getting a new SIM card? Or should I try a different Apple Store with a better manager?