Background: I have an unlocked Rogers (Canada) Nokia Lumia 900 running Windows Phone 7.8 that I am running on the Bell network. With two exceptions, all functions work perfectly. However, I cannot send or receive pictures by SMS text messaging. Also, I cannot enable, "Internet sharing."
In attempting to fix the text messaging limitation, I've noticed that I cannot alter the SMS center number (located in messaging >> settings). The current SMS center number, which is +14382762000, cannot be deleted or any changes to this number be saved. In anticipation of some suggestions, be advised that I have changed the Micro SIM card without any luck. Also, this identical phenomenon occured while unlocking a Samsung Focus from the Rogers network. Considering that the 'Rogers' graphic continues to be displayed upon device startup, my guess is that there is some sort of branding that has occured in the pre-OS, firmware or bios layer.
Can anyone shed any light on this?
Rogers support reportedly have no access to information regarding the installation of a Rogers-branded OS. They could not direct me to a department or point me to somebody who might know how this occurs. With some pressure, the representative suggested that a third-party mobile phone repair service might be able to flash an unbranded operating system onto my phone.
Perhaps if I knew more about what that meant, I wouldn't be feeling quite so skeptical. As it stands, I've gone just about as far as I can with this. I've learned that Rogers and perhaps other carriers generally are pretty shady in their locking and branding practices.
Thanks to all who have considered my problem.
As a matter of fact, you may be closer to the solution than you think. A Nokia Care will reflash the phone for you if you have written authorisation from Rogers to do so. I suggest you contact the same Rogers rep and ask him for the written authorisation.