Having got my three sim up and running , must say how happy I am with it but can't understand the signal, we have all got O2 phones here where we live as it is the only signal we can get all the time, but never good just enough for texts and calls if you are lucky but this three phone I have now won't work at all in the house nor on one side of the garden but if I walk ten yards to the other side of the garden I get H+ and can send picture messages and get on the internet! sort of nothing inbetween. Why is this, anyone know?