Vodafone offers a wide range of mobile phones from its own UK online shop. Choose from standard and exclusive online-only pay monthly price plans - or pick a pay as you go deal. Price plans feature optional extras for making the most of your mobile phone at better value prices.

Buy mobile phones direct from 3, whose smartly presented online shop offers exclusive deals on contract mobile phones and 3G mobile broadband. Their highly competitive price plans offer plenty of choices for combining minutes, texts and mobile internet allowances to suit your own particular needs.

Buy direct from T-Mobile for exclusive deals on their phones and price plans. They also offer low cost mobile web browsing via your phone or using a USB stick or dongle. Choose contract mobile phones with inclusive call, texting and data allowances - or buy a pay monthly SIM card, keeping your current phone.

Visit O2's online shop for special, online-only pay monthly price plans - plus other exclusive offers and extras that are only available when you buy your new mobile phone direct from O2. Mobiles on offer include Apple iPhones, Blackberry and other handset brands - all available on contracts or pay as you go.

Shop online for Orange mobile phones at the network operator's own online shop. Orange offers cover the full range of options, including a wide range of contract / pay monthly mobile phones plus pay monthly SIM only deals, where you keep your existing phone.

Vodafone's business mobile phone shop includes smart phones, PDAs and regular phones with a choice of flexible price plans. Their offers cater for individuals (eg sole traders, self-employed) up to small / medium sized businesses, who can share allowances between a number of users.

T-Mobile's business services include pooled voice, text, data and Wi-Fi hot spot allowances for multiple users and immediate replacement of faulty phones (no messing about with repairs). Handsets include BlackBerry mobile phones that support instant / push email.

O2's business shop caters to small businesses buying phones for between one and five users. Choose from major mobile phone brands including Apple and BlackBerry with features like push email and mobile web browsing. You can also buy internet solutions for mobile web browsing and email on laptop PCs.

One of the UK's largest independent mobile phone dealers, Phones4U offers contract and pay as you go mobile phones on all major networks. You can search their deals by manufacturer, network or current top sellers. Most major handset brands are represented, including the very latest models.

Buying a new mobile phone is easy at The Carphone Warehouse's online shop, which offers web-only specials and clearance deals on both pay monthly and pay as you go mobile phones. There's also a good choice of memory cards, Bluetooth headsets and other accessories for popular handsets.

Get cash for your old mobile phone from Envirofone, who'll take it off your hands in return for your choice of cash or credit at Argos. All the mobiles that they receive are either re-used in areas of need or recycled, so you get to feel good, too!

Sell, trade or recycle your old mobile phone for cash with Mazuma, whose easy to use website will give you an instant quote for your old phone. If you like their offer, they'll even send you a freepost envelope for sending in your mobile.