I`ve just received my pay monthly 50 Gb 4g data sim and it came in a plain envelope with a delivery note and nothing else. I intend to use it in a 4g router but have put it in my phone for now and it is showing as connected to 3g only although I`m in a 4g area. I`m wondering does it take time to register on the 4g network or is there something else I should do ? I ordered a free PAYG sim before commiting to a contract and that connected to 4g no problem using the same phone so I know I can get 4g in my area. Many thanks for any help.