Difference between AT&T and tmobile's unlocked iPhone?

What's the difference between an unlocked AT&T iPhone and a tmobile unlocked iPhone? I did some research and I found that current AT&T unlocked iPhones are not compatible with tmobile's hspa+ 42 mbps network. Is that true?
Also, are there any other differences?

Tmobile usa apple iphone 5 4s 4 factory unlock service?

Unlock tmobile usa apple iphone 5 4s 4. Where can i get this service. I need my tmobile apple iphone unlocked to work with other carriers. I'm looking for a permanent solution. By imei done remotely and someone who takes paypal. I have checked all over but nothing. Please anyone who actually got it done thank you

How much would you pay for this iphone 5?

Used 16gb white iphone 5 comes with charger… No scratches

Added (1). I'm selling mine and I wanted to know much I should sell it for

Added (2). I'm selling mine and I wanted to know much I should sell it for

Added (3). I'm selling mine and I wanted to know much I should sell it for

My iphone has been spilt on

Hey so i just spilled some acetone for natural nails nail polish remover on my phone (on the top half) and immediatly ran and rubbed it off with a kitchen clothy thing, and its all off, and i took of my case and it was wet in there but i dried it out. My lock button seems to work well and everything, but now my back camera is a little jacked up, because its sorta blurry and it seeing double. Will the nail varnish evaporate? How long does it take. Mind you i have a iphone 5 so i'm really scared i broke it. Please answer as soon as possible!

How old do i have to be to sell things to gamestop?

I have an old iphone 4 in perfect condition not a scratch to be found and i want to sell it to gamestop for store credit. Is there an age requirement to do that? Or can i just walk in and sell it.

Added (1). I'm 17 i'm hoping i won't have any problems.

What are the chances of my iPhone surviving its submersion in water?

I dropped my iPhone 5 in the toilet (like an idiot) and after pulling it out, drying it off and all that, it still worked. I thought all was ok and I survived a tragedy.

Not so.

You see, about 30 minutes later the phone shut off and refused to turn back on. Great. I tried to keep it off but the thing would keep turning itself back on (it would stay stuck on the apple logo) and ended up getting really hot in my pocket (I wasn't able to rush home to fix it, you see). I'm hoping the heat helped dry out the inside.

Anyway, I dried it off, tried to turn it on (it doesn't seem like it's registering a charge now, although it does show the blinking "no charge" symbol, so I take that as a good sign), and after that didn't work I put some rice in a ziploc bag and shoved it in.

I'm obviously going to have to wait 48 hours to see if it worked, but what are the chances of my phone coming out alive? It was in the water for 10 seconds, and it took about an hour before it hit the rice.

My iPhone 3 vibrates really loud, kind of like a rattling?

I have has my iPhone 3 for at least a few months and i haven't dropped it much, only from really small distances on carpet and leately it has been vibrating really loud, almost like a rattling sound. Every time i have my vibrate on it makes me feel like my iPhone is breaking. I turned off the vibrate but it doesn't feel right. Can anyone help?
(Please no "I have this problem too!" I just want an answer please and thank you.)