Hello
Recently over the last week I have rubbish connection reliability.
When I pick my phone up it's luck if I have a data connection, instead of checking emails or going to a website I either have to wait for a connection or turn data off wait 30 seconds to a minute.
(Not impressive)
I had payg £15 bundle which I updated recently with a £10 at the advice of a salesman as you had a deal on £10 bundles for more data (about 1 week before the problem started).
Regards Annoyed