The Underage Festival 2011 takes place in London's Victoria Park early next month, and Nokia is giving away tickets for you and three mates to attend the festival completely free, along with a brand new Nokia C3.

Around 10,000 teenagers are expected to attend this year's festival, with dozens of great acts having been lined up to entertain the crowds and not an adult in sight.

Tickets are going at £31.50 apiece, but enter Nokia's Underage Festival Competition and you can pick yours up completely free, plus score tickets for three mates to join you on the day. Better still, you'll also nab yourself a brand new Nokia C3.

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To enter, simply email your name, age, number, and address to underage.festival@ovi.com – ask a guardian if you’re under 16, and please take a look at the terms and conditions before entering.

More info on the Underage Festival 2011 itself, check out the festival website.