You can check your signal, as well as whether there are any maintenance issues in your area in the help section of our app. If you have any issues with your signal, then you can cancel your plan for a full refund within 14 days.
You can also check your signal quality using Ofcom's signal checker here.
Or with Three's signal checker here.
To check whether there's maintenance work going on on masts in your area enter your postcode here.