As far as I know PagePlus uses the Verizon network and only the Verizon network whereas with Verizon billed service they use any compatible network such as Sprint, etc.
Originally Posted by mike2874
TracFone uses different networks and technologies in different parts of the country. Some places use CDMA (Sprint/Verizon) and others use GSM (AT&T/T-Mobile). Net10 uses only GSM (AT&T/T-Mobile.) Generally prepaid carriers including MVNO's use only one network. The exception is T-Mobile which also uses a limited number of AT&T roaming agreements as well as the ability to roam in Canada, Mexico and as of late about 70 other countries.
Moderator yahoogroups forum T-Mobile-US http://groups.yahoo.com/group/T-Mobile-US