I just bought a Rogers Blackberry 9810, and I want to use it on MTN Ghana network, but I cannot activate my BIS. I can browse using the browser but other apps cannot connect. Anybody with a suggestion to resolve this please?
Just because a phone is unlocked does not mean it will work on any network. It must be programmed to use certain frequencies and if the carrier you're attempting to use it on works on different frequencies than what the phone is programmed for, the phone won't work.
You'll need to confirm which frequencies MTN Ghana uses and ask them to check if your phone is compatible with those frequencies.
Could be that the data plan you are subscribed to does not include access to the Blackberry services. For instance if you have an iPhone Data Plan with Rogers you normally can browse the Internet but BB Services will not work.
As for frequences, if he can connect to the Browser for data then frequency isn't the issue.