Despite checking whether a GiffGaff SIM would work in a mobile Wi-Fi device and being assured it does, it doesn’t. Been through troubleshooting and changing APN etc and it will not provide service. Had several communications with them they just keep coming back Rubbish. They’ve taken my money for a service that seems impossible for them Despite the fact they said they could. After several communications they will not return my money irrespective of the fact they have not and cannot provide the service they said they could. Warning to everyone to use a proper provider!