Just when you thought the fight between smart device giants Samsung and Apple couldn't get any bigger, Samsung have come through like a knight in shining armor to offer an upgrade offer for new phones. It is known officially as Samsung Upgrade, and the company is offering up to $300 per device as long as you purchase a new Galaxy S II, Galaxy S III or Galaxy Note.

Samsung's promotion takes place entirely on Facebook, where you're asked for some basic information about your old phone: brand, model, if there is any liquid damage or if the screen is cracked. After you've filled this information in, click "submit" and you'll instantly receive a refund quote, it can't be any easier.

The refunds, aren't that beneficial, but they're better than nothing. For example, a 16GB iPhone 4 on AT&T in 'good condition' was only offered $165, whilst a Galaxy S II trade-in is offered $140. If you want the full $300 trade-in, a 64GB iPhone 4S in good condition will do it. The trade-ins aren't the best value for money, but they're better than nothing, that's for sure.