Originally Posted by gerrymaripro
ATT Wireless SIM, supplied with unit. The unit has been recently reset with the service provider and assigned a new number.
It sounds as though the SIM is not properly provisioned for roaming. You will need to contact customer care to ensure that the device is provisioned for global roaming. Normally they require one to be a customer in good standing for at least 90 days, but they will make exceptions if your credit is good.