I need more information on the iphone 5s with tmobile?

I'm planning on getting it with tmobile I live in Los Angeles does anymore know how it work are their hidden charges? I want to pay over the 24 month that they have. Can some one explain how this all works?

Don't get an iPhone they are overpriced wastes of money and can do less than most phones.

T-Mobile, as most carriers will deduct part of what you pay monthly and put it towards paying off the handset. Example: the iPhone 5S is $720, divided by 24 months is $30/mo. That they will take from what you pay monthly.

Upfront, you will pay an activation fee between $20-$35 and the SIM card costs between $1-10.