My Brother changed from O2 to Tesco which also uses the o2 network.My current O2 contract does'nt actually run out until January; was planning on buying it out in Dec but will hold off till then.They sent me a nano sim but it's taking forever to link the iPhone with my mobile data, am told it takes 24rs to reflect; i guess that explains why it's showing 3G on the screen but 4G is enabled in Mobile Data settings....so still on wifi
My bb10 was on 4G before I banished it to the afterlife last night!��
He says it was the best he has done in ages.
Customer care is great, great prices and a rapid connection.
Basically if you want to stay on O2, Tesco is a valid alternative.