skip - wait for software unlock
These devices don't really work that well. The quality of reception is worse than using only a SIM card and occasionally you'll even get a "Invalid SIM" or "No SIM" error. I suspect the reason for this increased resistance: the electronic contact between the SIM and the device is not very good and the device will inadvertently move causing complete contact loss. Software unlock is the best.
Biting the hand that feeds IT
