Is it safe to buy from gumtree?

I'm thinking about buying iPhone 4S 16GB from GumTree and want to meet the person who sellls it, but what if the person will report it stolen and block it? How can I prove I bought it?

Added (1). THE PHONE WILL BE UNLOCKED AND WILL GO TO RUSSIA IF THAT'S IMPORTANT TO KNOW

3G connection sucks with iphone 5?

I have an iphone 5 with 3G. What is the fastest internet browser and what's the best quality youtube viewer. Rite now with safari its slow as balls and the youtube, even with high quality BLOWS.

GameStop iphone/ipod trade in policy?

I recently just found my iphone that was stolen ( iphone 4s). I found it with a changed passcode and without a sim card. Now i'm just trying to sell it to get an iphone 5. Will Gamestop buy it even though I can't unlock the phone? WORKS perfectly fine though

i can't restore on itunes

How much would a cracked screen iPhone 4 16MB sell for?

I cracked my screen months ago and just got a new a iPhone so I'm trying to sell my broken one off. The front screen is the only part cracked and it works perfectly fine still. I don't want to sell it for too little so what would be a good asking price?

Can i transfer my apps from my iPod to my iPhone?

I had an iPod Touch 4g and the screen cracked recently, And i can't see a thing! But i'm planning on buying a new iPhone 5. I was just wondering. If i could transfer all my costly paid apps such as Minecraft, N. O.V.A, Real racing 2, Infinity blade 2 and more. But the problem is. I haven't saved any on iCloud. Is there still a way i could transfer them?

If I restore my iphone will it lock itself?

My cousin gave me his At&t iphone 4 at the moment it has no service. If I was to restore it would I lose the ability to still access Wi-Fi and download apps? It was unlocked by At&t and never jailbroken.

GameStop iphone/ipod trade-in policy?

I recently just found my iphone that was stolen ( iphone 4s). I found it with a changed passcode and without a sim card. Now i'm just trying to sell it to get an iphone 5. Will Gamestop buy it even though I can't unlock the phone? WORKS perfectly fine though

Can i change the service on my iphone 4s from AT&T to Sprint?

I've had my Iphone 4s for about a year with AT&T and my contract is about to expire. Is it possible to just take my phone to sprint and start a contract with them? Or does my phone only work with AT&T? It would save me about 10 bucks a month on my phone bill.