@KerryCo_2447606 Firstly, I suggest that you look at the Coverage Checker to see if a good signal is possible in your area . Next, look at Network Status Checker to see if ac local mast has any problem.
If you are in a poor signal area, then changing your sim will make no difference unfortunately .
If you do really think that there is a problem with your sim, you can get a replacement sim by reporting the sim as 'lost or stolen' via your account dashboard. The new one will have the same number, but your account will be suspended until you have activated the replacement by following the instructions supplied.
