I happened to use Clay Sim card for UK and it was a really bad choice. My sim card wasn’t working ever since i landed and despite several calls to the customer centre, they didnt seem to extend any sort of help whatsoever!! The sim never worked and i had to get it cancelled within 2 days into my trip but these frauds sure did charge me 1000 bucks for rentals and for the sim from which i barely made any calls! Neither using nor ever recommending