You may think of O2 as a mobile operator, but the company has also launched a range of own branded smartphones in the UK. The company focused on producing PDA phones under the Xda brand, but has more recently launched "smart" touchscreen mobile devices.
Read the latest news on the O2 network and phones below, or browse the network's future and most popular releases.
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O2 is known primarily as one of the UK's largest mobile operators. The brand, owned by Telefonica UK Limited, was known as Cellnet at launch in 1985.
O2 famously launched a range of phones under the Xda brand, which were Windows Mobile-powered PDA phones produced by the likes of HTC, Quanta and Erima. O2's first "digital assistant", the O2 XDA, was released in 2002, complete with a 206MHz microprocessor, a 230 x 320 colour touchscreen and a dual-band 900/1800MHz radio. Other phones included in the range include the Xda Mini, Xda IQ and the Xda Incognito.
O2 has announced that its future plans involve manufacturing Near Field Communication (NFC) technology in mobile phones in the United Kingdom, which is likely to feature on the network's high-end devices.