Before revision: Some MVNOs use more than one host, which may even have different technologies (for example, different Spectrum 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: (band)Some MVNOs use more than one host, which may even have different technologies (for example, different Spectrum 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.