O2 BIG BUNDLES SIM PACK. O2 WIFI Hotspot access O2 PRIORITY ACCESS (Top up required) Top-up on activation required. This sim offers a £10 monthly bundle which includes 8GB of data, unlimited minutes, and unlimited texts. No credit is included with this bundle. Alternatively, a £10 credit option provides 2GB of data, 250 minutes, and 1,000 texts. This O2 Pay As You Go Sim Card is ideal for those who want flexibility and access to O2's network benefits.