I am writing an Android program that reads the incoming sms number and returns the contact name from the internal contacts DB and speaks out something like "Incoming text from John".

Unfortunately I hit a snag as my wife's phone has started sending texts from 64271234567 instead of the usual 0271234567, other phones also seem to have multiple numbers like this.

Is there a way on the phone to turn it off? She has a samsung galaxy S2.

Cheers