most horrible phone company to use in Uk. coverage is like 30 percent of the time, half of the call’s going to a voice mail, internet is not working half of the time. i called numerous times to complain and they apologised “ we working in the area… “ for 1 year they have been working in my area… i called them again week ago and after speaking to customer service, they said they will stop my service and even refund some money, instead today i was charged for 1 more month… also i am really disgusted with the dishonesty of their employees… i was in the o2 shop in chelsea to replaced my sim card. one on the employee, i think his name was Omar, hold me that i can get this tablet , only have to comeback on the next day and pay 100 £ and i can keep the tablet. he never told me that was an internet with sim on 2 years contract, even he put insurance on the tablet… so at the end instead geting cheap tablet for 100 £ , i had to pay cancellation fees… i have really bad experience with O2 , they have horrible service and their employees are laying to the customers… for them customers are to milk them for money… so if you want to save your nerves, pls just pass on this worthless internet company