Official UK O2 TEN Bundle Pay As You Go SIM Card – Standard/Micro/Nano
3 in 1 SIM gives the option for Micro, Nano or Standard Sim size. 1 x O2 SIMCARD(3in1 SIM gives Nano/Micro/Standard option). Ensure to make a chargable call or text in a 6 month rolling period to keep the SIM active with O2.