Looking to start 2014 with a 4G phone? If finances are still a little tight after Christmas, you might want to check out the HTC Desire 601. which happens to be an O2 exclusive.You might recall the HTC Desire 601 from its launch. That took place back at the start of September, borrowing some features from the flagship HTC One, but definitely coming in some way below it in HTC's range. However, it did have one key selling point, the ability to go 4G without breaking the bank.We now know just how much the Desire 601 costs, with O2 spilling the beans on its exclusive deal. Tariffs start at £17 per month (on a two-year deal). That gets you unlimited calls and 1GB of data. If you want to go pay-as-you-go, that will set you back £239.99. Note that the phone also comes without a charger, so check you have one or budget to buy one on top. For all the deals, head to its site or drop into an O2 seller on the high street.As for the phone itself, joining that 4G connectivity is a 4.5-inch qHD screen, but with just a 960 x 540 resolution, along with a dual-core 1.4GHz Qualcomm Snapdragon 400 processor, 1GB RAM a 5-megapixel camera with 28mm lens, microSD slot, VGA front camera and dual stereo speakers. The phone runs Android Jelly Bean 4.2.2, along with HTC Sense 5.0, which includes BoomSound and the Blinkfeed interface.If that appeals, the phone is available in the red you see above right now.