For the last month my phone has start doing a weird thing where it will only work off one cell tower (the one on my building that I work in). When I go home it says I have full coverage on my phone but I can't make any calls out. After a few hours of being at home it says I have no coverage at all. I know its not a dodgy cell tower in my area because other Vodafone cell phones have no problem with txting and making calls from my house.

During the holidays I went travailing to other cities and got the same issue where it wouldn't work at all. Once I get back to work I get full signal again and can make out going calls and txts. I also receive a back log of txts (all 95 of them)

Now I've gone as far as to hard format my phone but it has made no difference. Anyone have any ideas?