How much is your monthly bill for T-Mobile/Sprint?

I'm with T-Mobile, and I'm thinking of either upgrading to a Samsung Galaxy S3 or switching providers and getting an iPhone. This will be my first touchscreen phone, and I'm more worried about how much I'll be paying a month than any of the activation fees for the phone itself. Can anyone tell me how much you pay monthly for your Android/iPhone? Would you recommend the plan you have?

I'm on Verizon and pay around 80 - 110$ a month for myself. I have an iPhone 5 and I have unlimited talk and text. I have 4 gb of data which is plenty, but you can always change your plan at anytime with verizon. It all depends on how much you use data and if you're on an individual plan or family plan.

  • Why does an iPhone cost so much on a monthly bill? My family has Verizon and I really want an iPhone 5, and I need to convince my dad. But when I did research it said $100 monthly. Why is that?
  • Sprint iphone 4 monthly bill price? So i know i could have asked a sprint customer service person, but sprint is closed and i have until 8AM tomorrow to convince mom to get me one. I want an iphone 4 or a 4s. Now i have some friends in school who said their bills are in between $50 - $75. Thats the same amount as my stupid Metro PCS bill and believe me, the phone is no walk in the park. So how much really for a sprint monthly bill for an iphone
  • How much would my iPhone 5 monthly bill cost? I want to get an Iphone 5. I think it might be cheaper If I get it from Walmart. Which company should I get? (Att, Sprint, Verizon)? How much would it be.
  • How much would my At&T monthly bill be if I get an iPhone 5? My family and I just switched to AT&T, and my mom got an iphone 4s, and my sister has a basic phone. I have a basic phone for now but want a iphone 5, how much would our monthly bill be and how much would I have to pay for my phone? We're getting the 3GB data plan