[kintamanimatt]

If you're looking for a work-free backup/restore solution, those don't exist. The point is that you'll at least have immediate access to an active number from your home country that you can give to your banks or whatever. This means your banks (and others) aren't going to be weirded out by that non-domestic phone number, which is a problem you were describing.

Sometimes you'll be able to port your number too.