Which iPhone 5 is better? T-mobile or sprint?

Right now I have sprint and the service on it is no so great I only have 2 bars in my house. I have 14 of getting my money back but I was think of switch to t mobile? Is that a good idea

Probably not. How is the data speed on sprint? Don't you have Wi-Fi. Who makes phone calls anymore. TMO LTE data sux

That's up to you really. The phones themselves are the same. No different in specs. So its a matter of which carrier has the better rates/signal in your area.