Carphone Warehouse has a sale on for the Samsung Galaxy S4 and S4 Mini , but you only have until midnight to pick one up. Oh yes, you have to buy it online too, but if you are reading this, that shouldn't be a problem.If you like the idea of owning a Samsung Galaxy S4, you can now pick one up for 'free' on a two-year contract for £25 per month. That's on the Vodafone network and in a colour choice of red, black or white. If that appeals, get your name down before midnight.If you prefer a Galaxy S4 Mini, that's available in pink, purple, orange, black or white for £17 per month on O2, again before midnight tonight. Other deals for Samsung kit are also available, including a Samsung Galaxy Note 3 with Samsung Galaxy Tab 3 for £33 per month, Galaxy Ace 3 for £13 per month and a Galaxy Fame from £6.50 per month.You can check out all the deals here, but as we said, you'll need to commit pretty fast to get these prices.