IPhone, screen won't turn any more?

IPhone, screen won't turn any more?
Previously if I turned my IPhone on its side, the image would rotate so I could read it on a wider screen. Now its stopped doing so, any ideas please?
Is thee a setting somewhere.

What service for iphone 3gs?

My phone broke and my friend is will to give me his old iphone 3gs. I'm looking for a service that I would have to pay no more than $35 monthly (preferably prepaid). My previous phone was with virgin mobile and was the lg optimus v. Any ideas?

I just want a plan/prepaid service that offers unlimited text. I don't really care about talk time.

How to add a contact to iMessage?

Well one of my friends have iMessage on there iPod and I have an iPhone but when I try to iMessage him it's still on text message and doesn't go to iMessage… Help!

Iphone 3GS keeps glitching out?

Ok so i got this new iphone 3GS from a friend, it keeps putting it in recovery mode, then leaves recovery mode and wants me to re activate it like the iOS thing and i keep resetting it. The phone seems F*cked and yah… Like it works and looks brand new, but i need to find a way to make it so it stops putting it in recovery mode, turning itself off, saying connect to itunes and all that ***. I don't want to have a glitchy phone someone please say theyve had experience and know what to do about it >

HOW TO PRESERVE IPHONE BATTERY?

I need my phone all day tomorrow to take pictures so what settings should i turn off to make it last the longest? Low brightness? Airplane mode?

Best Buy iPhone 4 to iPhone 5 trade, is it worth it?

Okay so best buy is doing their trade in where I give them my iPhone 4 and if its in good condition I get $150 for it and I can use that for a iPhone 5. Now my question is, with the WWDC conference going on and them announcing iOS 7 and possibly iPhone 5s/6 is it worth it to get the iPhone 5 or should I wait until they release the next iPhone? I know they haven't announced any new phone yet but we all know its coming out within the next couple months… I guess I'm just asking if its worth it to wait or to just get the iPhone 5… Please help.

I really want the iPhone 4, but I haven't fulfilled my 2 year contract?

Right now I have a piece of *** phone and I would really like to upgrade to the iPhone 4 since it is free and would only cost $40 a month. But, my problem is I'm only halfway through my 2 year contract and I don't really want to wait another year to upgrade. The termination fee is $350 and I'm wondering if it is worth it to pay the termination fee and just get the iPhone 4 or should I just wait the rest of the year. By the way, I'm 15 years old and I would have to pay for all of this myself. Also, my sisters upgrade date is the same as mine and my mom's is only 3 months before me.So, the shortest time I would have to wait if I took my mom's is April 2014.