GSM Prepaid Options







Straight Talk:
Plans - $45, 1000 Minutes, Unlimited SMS & Data
Option to choose ATT or T-Mobile towers (T-Mobile network is faster)
SimSave code for $10 off the SIM card purchase

T-Mobile:
Monthly 4G Plans - 100 Minutes, Unlimted SMS & Web (5G are 4G speed)

Resources:
[GSM] Own Your Cell Service ..with Prepaid and the Galaxy Nexus 




"Can I switch to T-Mobile but keep the phone number I already have from another carrier? How would that work?
Yes, it is possible to keep the number you already have from another wireless or landline carrier. First, check to see if your existing number is eligible for transfer to T-Mobile. If it is, then all you have to do is follow the on-screen instructions displayed during check out to authorize the transfer. We'll do the rest.
If you are interested in a prepaid phone and transferring your number to T-Mobile please visit your nearest T-Mobile retail store."