Google's Nexus 4 will go on sale in the UK tomorrow, with both mobile companies and Google itself selling the device.
O2 will be the only mobile operator stocking the Nexus 4 directly and will be launching it at the O2 Arena in London tomorrow.
The LG-made phone will be available for free from O2 when customers sign up to the operator's On & On pay monthly tariffs of £36 a month and over, which all come with unlimited calls and texts as well as 1GB of data.
Meanwhile, the latest Google phone can also be obtained through Carphone Warehouse, where it is being sold on both O2 and Vodafone networks.
The device is available for free when customers commit to two-year deals on O2 tariffs over £31 and Vodafone tariffs over £33 per month. The £31 O2 tariff includes 600 minutes and unlimited texts but no data, while the Vodafone tariff is the same but comes with 500MB of data per month.
Google's new smartphone will also be sold on the Google Play store at £239 for an 8GB version and £279 for a 16GB version.
The Nexus 4 will be the first phone to come with Android Jelly Bean 4.2 installed out of the box. It has a 4.7 inch screen and an 8 megapixel camera, in addition to NFC capability and wireless charging.