Anyone use a mobile phone signal booster?

yes - i've got the suresignal booster. gives me a signal all round the house (end of terrace).  I had a few issues when i first got it, had to switch off on and again a few times, but been fine for probably a year without problems now.

However, trying to call the helpdesk was a nightmare, because obviously i had no signal to make a phone call, end up walking 300 yards to the top of a hill to get a signal, spent half an hour trying to get them to reset my account.