Before revision: Some MVNOs use more than one host, which may even have different technologies (for example, different Spectrum ( band ) and TracFone handsets use either CDMA and 1xRTT on Verizon Wireless, or GSM and UMTS on AT&T Mobility or GSM and UMTS on T-Mobile US).
After revision: Some MVNOs use more than one host, which may even have different technologies (for example, different Spectrum ( brand ) and TracFone handsets use either CDMA and 1xRTT on Verizon Wireless, or GSM and UMTS on AT&T Mobility or GSM and UMTS on T-Mobile US).