Can an iPhone 6s case fit an iPhone 6?

I bought my best friend a customized phone case for when he graduates from basic training. It has one of our favorite nebulas on it. The case I got him was for a 6s because he upgraded before he left but I talked to his mother and she said he got the 6. I know the 6s is slightly larger by mm's. I'd hate for something to happen to his phone. Should I just order another case?

How to undisable my Instagram account on my iPhone?

My Instagram account was disabled on my iPhone for apparently violating terms of service. It is not disabled on the desktop version or my iPod touch though. Is there any way to undisable my Instagram on my iPhone 6s?

What do I do if my iPhone 5c says searching?

I recently bought an iPhone 5c AT&T from a friend and I haven't even had if for over a month. We had to replace the SIM card because hers wasn't working. After we replaced it the phone had been working perfect with cellular data. But a couple days ago I noticed that it said "searching" on the top left of my screen and won't work without Wi-Fi. I can't send texts and I can't call. I also tried to take the SIM card out to see if it would say "no SIM card" but it doesn't even say that. It also says my phone # is unknown. I need help?!

Something happened to my iphone 6s and i was just wondering if any of you know what it might be?

So about a month ago, before Christmas, I got an iphone 6s for my birthday and everything was great. On monday 4th of January i used my phone till about 2am, and then put it to charge, as i do every night, on the same place with the same charger and everything. So i wake up Tuesday morning a go to use my phone and the screen is black and it doesn't turn on at all. BTW the electricity did not go out. I put it to charge with my dads charger in another place and left it charging for 30 minutes and I tried hard reseting it and nothing. I'm gonna mention that I dropped my phone, but i dropped about 3 or 4 days before this incident happened, and after i dropped it was perfectly normal and i notices no change whatsoever. So my mom took it yesterday to where she bought the phone and they said they would call her Monday. I do have warranty on it so iim pretty sure everything will turn out fine. IIm just wondering what could have happened to my phone. Anyone got any ideas?

Switching from AT&T to T-Mobile

So I currently have the iPhone 5c right now and my contract with AT&T ends in April. I want to get the new phone in September/October and switch to T-Mobile. The problem is the gap between April - September. Would I have to renew my contract and wait another 2 years this April? Or what should I do