New iPhone 5s T-Mobile upgrade service not working?

Recently upgraded my phone from the Galaxy S Blaze to the new iPhone 5s.
I love the phone, however my service doesn't seem to be working on it.
I can only access my Wi-Fi.
Is there a process to take when getting an upgraded phone from T-Mobile?

How to get the sims freeplay money cheat to work for my iPhone 3?

So I have an older iPhone, plus my home button just broke so I use and assistive touch (home button on screen). I'm losing my mind trying to find a money cheat for my sims free play that works! I've tried everything. If you have successfully done it, please tell if if it can work with the assistive touch button or not or what else I can do

My iphone ios7 is stuck on vertical?

I have the ios7 for my iphone. When i had the other ios6 or whatever it was for the last update, i know how to tap the home button twice, slide to the left and touch the orientation lock but now i don't know how to do it for ios7. Please help! By where it shows battery percentage, there's also a lock sign.

Which is better the iPhone 5S or 5c?

Which is better and why? Is the iPhone 5S or 5C better?

Added (1). I tried and hate Android phones. They suck! I'm asking about the Apple iPhone because I love iPhones!

What should i do with my iphone

Alright so i bought a used iphone 5 yesterday that has ios 7 on it.
So after i checked it and paid the guy he earased all his data by going to an app called "Where's my iphone" and making seem like the phone was stolen so that everything was earased.
After the phone opened it was like i bought it from apple itself, like i'm choosing the laungde and country and stuff like that. But then the phone said "This iphone was stolen and was earses, you must log on with the apple id which was used to delete it"
When i told the guy (i sent like 5 messages until he finally replied) he said just hold the off and home botton for 10 seconds then hold the home botton and connect to itunes and do an Iphone software update and it will go right back to usal. I did that but nothing worked its still was the guys Apple ID which he won't give me or come to my house and log on then leave.
What should i do?
Please Help.
Thanks for reading this <3

Added (1). Sdins: that what i told the guy but he replied saying that he called apple and thats what i should do.