I'm thinking of requesting that GM or Onstar unlock my $24,000 4G cell phone so I can put it on Verizon.
I'm pretty sure that OnStar is CDMA, not GSM, so we're dealing mainly with Verizon and Verizon MVNOs.Why???? ATT works better and has a bigger print. The only advantage verizon has is speed is faster.
If one really wanted what onstar offers. One could go to Tmo and buy their obd2 plug for $10 a month for the same services.