O2 mobile network is one of the leading mobile network services provider which offers better, fast and effective communication. O2 mobile network operates on various frequencies band offering one of the largest GSM coverage in UK and Europe. With brilliant network coverage, O2 mobile network also emphasize operating latest communication technology prominently 3G. O2 mobile network stresses its services on 3G as it is most popular among users. O2 mobile network offers expert services in personal communication, faster data transfer, video and text messages, 3G voice and video calling and many more. O2 mobile network offers contract mobile phone deals. O2 mobile 12 months contract phone deals and 18 months contract mobile phone deals are popular deals in UK. O2 mobile network introduces several tariff plan pay monthly phone deals on latest handset from top mobile phone handset manufacturers like Nokia, Sony Ericsson, Samsung, Motorola and LG. O2 mobile network presents fantastic cost effective tariff plans such as O2 250 B4B, O2 600, O2 400 and many more in which new handset is available free of cost otherwise at discounted rates. Several low cost O2 mobile contract deals such as clearance phone deals, cashback phone deals and free line rental phone deals also exist. Compare all these tariff plans easily and effectively with online mobile phone shop which enlist most popular deals to select and buy a best deal for you.