What it lacks in features, the Nokia X1-00 more than makes up for in battery life. In fact, the X1-00 could be the perfect 'emergency' phone.To be fair, the features are on a par with the price, a fairly modest 35 Euros, with the handset pitched at 'growth markets', where the need up update your Twitter status with 'LOL' is less important than basic calling. For that reason, the handset has five phone books to allow for sharing of the Symbian 30 handset, as well as powerful speaker, so it can be heard in a busy or built-up area.But if you need a phone as back up for your smartphone, perhaps a phone you can afford to lose, it's probably a decent option here too. Not only that, Nokia claims it can work for 61 days on a single charge. So when you do actually need it, the X1-00 is ready, willing and able.Other features of the colourful smartphone include a built in FM radio, a torch, a microSD card slot, a music player app, calendar, clock and calculator, plus some pre-loaded games. It goes on sale in April for that 35 Euros price tag.