The phone is a small but functional Android phone with a dual-core 1.5GHz processor. When inserted into the tablet it becomes a bog-standard, functional Android tablet. To answer calls in this mode you use a ballpoint pen-shaped stylus which doubles as a Bluetooth handset.

The HTC One S is a lovely, smaller 3g smart phones with a 4.3-inch screen and a 1.7GHz dual-core processor. The latter meant it sped along happily through just about every task and almost rivalled the One X for camera performance - though it's not quite as quick. The metal chassis makes it one of the classiest phones on offer and the HTC Sense tweaks are all worth having.

HTC's Desire X came out of nowhere and appears to exist to keep the Desire brand name alive. The 4-inch screen is crisp and clear, although the 5-megapixel camera was consistently not sharp and struggled in low light. It looks very classy with its white chassis with metal trim and handles well. The battery easily lasted all day. A big boon was that holding the Page Flip button down acted as a Menu button - we hope to see this feature on other HTC phones.

HTC's One V is the budget model and echoes the design of the legendary HTC Legend. Its solid metal chassis belies its low price although the single-core 1GHz processor felt pedestrian by modern standards and the 5-megapixel camera is noticeably inferior to other HTCs. You also need a microSD card to make the limited memory useable. The 3.7-inch screen is bright and functional but the small size and keyboard mean it's suited to those with small hands.

Last week's Windows Phone 8 launch showed off three snazzy handsets from HTC, Samsung and Nokia. Because WP8 phones all use the same systems, there's very little difference in terms of functionality. The Lumia 920 comes in some funky colours, offers 4G, a great 1280 x 760 4.5-inch screen and an optical-image-stabilized 8-megapixel camera. It also offers, wire-free charging as an option. It looks great but will be pricey at over $800.

You could wait forever to buy your next phone - there are always newer and better models on the horizon. Right now, if you want the latest 4G model and don't want to be regretting your decision in the next two months, then frankly your only choice is the iPhone. All of the 4G Android models excel in some areas but fall down in others.

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