I lost my iphone 5 for at&t unlocked?

Can someone use my unlocked iphone 5 if i reported it lost at at&t but i only have the cheap insurance that replaces my phone but they can't track it. I just wanted to know if the person that found it or stole it can use it if its already unlocked?

IPhone 5 IOS 7 vs Samsung Galaxy 4?

I never own any smartphone before and i'm thinking of having one next month (September)
i love to play games, watch youtube, surf internet, taking pictures, videos, listen to music etc.
so which one should i grab?
i watch and read a lot about pros and cons of both phones but still can't decide.
i need phone that can resist for many years.

How to install older ios 7 beta?

I have a Verizon iPhone 4S and I use a neter pro/Gpp witch is a sim unlock so I can use t-mobile which I currently am. The problem is that I wanted to use the ios 7 beta but the unlock only works with ios 7 beta 4 and below.iTunes won't let me install beta 4 i get error 3194. How can I get beta 4 on my iphone?

Added (1). I don't care about warranty or anyof that stuff and I know whatim doing also I won't pay for the registration scams.

What happens if I sync my iPhone to a new computer?

My iPhone is loaded with applications, music, messages, etc which was synced by one of my computers. That computer contains all the stuffs that I usually sync to update the contents on my phone. Just recently, I bought a new computer with fresh iTunes and I was just wondering what would happen if I sync my phone to the new computer? Is it possible to transfer all the apps and files on my iPhone to the new pc?

Hope you could help.

Can I get a SIM card for my IPhone 4S from Sprint?

I have a 16GB iPhone 4S from sprint and I could've sworn there was like a SIM card or something that would give me more storage for my stuff. Is there and if so, how without getting a higher GB phone?

Should i get a iPhone 5 or ipad 4?

My birthday is in 5 days i can get a iphone 5 or ipad 4 wat should i get or should i wait for the iphone 5s or 6 watever its gonna be called and the ipad 5 i herd the next iPhone coming out September 20th

Who Was Wrong and Who Was Right?

Awhile back my brother purchased an iPhone 4 from my co-worker. I witnessed my co-worker using the phone so I know that it was working. After the phone was sold my co-worker said the back was shattered and the phone is not 100% working condition. My brother bought it anyway. This day my brother is complaining about the phones performance saying that it's my fault and I screwed him. My fiancé also has an iPhone 4 and she was going to give it to my brother for free but she found some messages showing my brother's disrespect towards her and she decided to give the phone to her father who needs a phone… What do y'all think about that?