S SiempreTuna Android Expert Oct 7, 2013 #2 O2 will replace SIM cards that don't work if that's the issue. If the issue is that your old SIM is too big, they may charge a fee. If you don't already have an O2 SIM, I'm sure they'd be delighted to sell you a monthly plan or a pre-pay SIM.
O2 will replace SIM cards that don't work if that's the issue. If the issue is that your old SIM is too big, they may charge a fee. If you don't already have an O2 SIM, I'm sure they'd be delighted to sell you a monthly plan or a pre-pay SIM.
