LG Wireless Phone

What would happen if I changed my phone to another phone from a different company?

I have an ATT phone but my friend has a T-Mobile and is willing to give it to me.. What will happen? @Jade - Sorry I didn't make it clear, but I wanted to know if it would stick into MY plans or my friends plans?

Public Comments

1. they might let you keep your number but normally they change it if thats what your asking
2. you would have to get the phone unlocked if you want to use it with your provider..