How to unlock a tmobile iphone four?

I bought it off ebay and i don't have a tmobile account so i can't do it via them, is there any other way to do it other than spending 90+ on getting it unlocked? Thanks

Added (1). I've called tmobile and they said that they can't do anything without the person who sold me the phone calling in and paying which probably isn't going to happen:/

I'm selling my iPhone, but I need to transfer stuff

I'm selling my iphone 4 in a couple of days, & I need help to transfer my photos, but the thing is, on my computer, it has no memory to hold anything. So nothing will transfer onto that. I have tried iCloud, but that didn't work either.

Buying unlock iphone 5 from apple?

I'm 15 and I'm saving up to buy an unlock iphone 5 from apple. I want it unlock because I don't want a contract. I want to know a cheap prepaid plan that works for the iphone 5. I was thinking about straight Talk, but I saw your can't send mms and I don't want to do the tmobile sim swap. My other choice is tmobile simple choice plan for 50 per month. But I need more information on the tmobile plan, can I send/get mms? Do I haveto cut the Simpsons card to nano? Is it truly contract free? What if I can't pay for a month? Will they damaged my mom's credit score?(I'm giving my mom the money since I don't have a credit card) thanks in advance.

How to build my own app for a game on android/ Iphone?

I would like to know if there's a website i go to build a app for an android Iphone phone. I need to know what the cost are? What is the percentage do i get if you have to pay for the game and if customers buy more credits for the game? Do i have to have a paypal account, etc? Anything you might think i need to know would be great. Thank you

Added (1). Please explain in a lot of details. I have never done this before. If you know of a good website please let me know it. If you know of one that's easy to understand would be awesome.

Can i sue the person who stole my iphone from my backpack?

Well this actually happened on Thursday this kid stole my phone from my backpack and their was an investigation is school then, my friend over heard this kid names Danny saying "dude look here I stole tanias phone do you want to buy it off" well then she Texted my friend grecia bc she didn't have my number saying I saw tanias phone grecia then told her teachers who told the VP when the VP got the student during lunch Danny told him I did steal the phone but I handed it to someone else to hold it we asked where it might be he wouldn't say even when we said you won't get in trouble and youll get 50$ for "finding"it and not have to pay the 90$ he spent on iTunes he wouldn't cooperate. So I was wondering can I sue him to buy me a new iPhone or make like a judge make him give me back, pay the 90$ of iTunes money is so how much for a lawyer I have like 10, 000 that is supposed to be used for my sweet 15 but I rather have my phone back bc it has baby pictures I had the only ones left bc our house was robbed and they took our cameras, laptops.camcorders, etc

Ps, hes like 13 or 14 and has a history of stealing and I'm 14 but I don't care he had so many chances to give it back so this is plan B