Roland Perry writes:
I use data on the move a lot. And was very disappointed on a recent
trip to London when several times I could get a 2.5G signal, and
"connect", but data was extremely slow (order of a few bytes per
second).
Often in the middle of cities the networks can get very congested, if you
want to stream radio to your phone you are better off in the suburbs.
I am suprised you needed to use 2.5G in London, in my experience 3G
coverage is pretty unversal. Even in rural Shropshire I rarely need to
use 2.5G.
Is there no domestic "roaming" between carriers?
No there isn't (apart from between the two carriers who recently
merged: T-Mobile and Orange).
3 also roam onto Orange (2.5G) where they have no network
coverage.
AFAIK they don't roam onto Orange 3G or T-Mobile.
Phil