Is there any possibility to remove the block on roaming in the local area
(USA) or country (Europe) ? Specific example - I have service with T Mobile
in US. There are areas in my local area where AT&T has better coverage than
T Mobile or T Mobile has no coverage at all. Unfortunately my phone does not
let me choose a different carrier even if T Mobile is not available in the
area. I would ideally like my phone to choose the strongest carrier same way
it does when travel out of my local area.

Thanks