Can't get cellular internet NX500 - ok on RJ45 plugged into WAN Firmware updated New Lyca SIM , not pin locked , ok in phone but when inserted into NX500 , I just get 'no internet ' I've changed the s

Hi , I Bought a MR400 AC1200 and inserted a Giffgaff SIM card in (Conneting via SIM only - no wired connection) - all is good bar on the outside of the building the wifi is just short by about 15 ft o