I can't get all landline numbers to call my iPhone 3G. Solution below.?

Question

I contacted o2 today and they know about this fault. In the call keypad, you need to type: ##02# then press the green call key. After doing this, you need to reactivate your voicemail by calling 1750. All these settings can take up to 24 hours as it is a network request. Apparently it will fix this fault.

Answer 1

you should ask Apple. go to an Apple Store and ask pleople who work there.