Before revision: CDMA cellular providers that use subsidy locks on their handsets: Ntelos, Cricket, Sprint, Quest, US Cellular, SureWest, Telus & Bell Mobility (Not a complete list) GSM: (SIM LOCK)T-MobileCingularAT TRogers Alltel or Verizon Wireless do not use any type of subsidy locks on their CDMA phones.
After revision: CDMA cellular providers that use subsidy locks on their handsets: Ntelos, Cricket, Sprint, Quest, philippines Cellular, SureWest, Telus & Bell Mobility (Not a complete list) GSM: (SIM LOCK)T-MobileCingularAT unlock)globesmartsun Alltel or Verizon Wireless do not use any type of subsidy locks on their CDMA phones.