since 29/03/2021 my two sim cards no longer connect to any network have contacted worldsim regarding this issue all they do is ask what model of phones I am using and that they will get technical to check the sim cards out and will e mail me back within 24 hours the results, not had anything back from them. One sim card has£63-28 still on and the other sim has $72-98 still on but cannot use as one sim when selecting network which is (vodaphone) comes up with network not available the other two networks which is (ee) and (O2) shows that they are registering for approx 5 mins then they just go off the screen. The other sim card when trying to register onto network just comes up with error connecting.