This is a sponsored post on behalf of Zapper.So you’ve got that itch, have you? The itch that can only be scratched by buying a brand new Chinese smartphone from the likes of Vevo, Xiaomi, Huawei or any of the other brilliant brands coming out of the world’s most populous nation?You’re not alone.The only issue is how, exactly, you intend to raise the cash for that purchase. Smartphone brands from China are certainly much cheaper than their western counterparts, but that doesn’t mean they come for free.Well, you could use a service like Zapper. Launched in 2009 and featured on the Dragons’ Den in 2012, Zapper is a fast, easy and fun way to sell your used mobile phones to raise cash for your next smartphone purchase.How does it work?By visiting their website at www.zapper.co.uk, you can input the details of your current smartphone. All of the most popular brands are supported, and with your phones specific specification and condition plugged in, you’ll be offered an instant price for your smartphone.That’s all well and good, but there’s more you can do than just sell your mobile phone at Zapper, because the company also let you sell your books, CDs, DVDs, games, LEGO, laptop or tablet.Put simply, if you’ve got something to sell that you don’t want any more, Zapper will have it off you.How do I send my items?Once you’ve decided on what you want to sell, proceed through the ‘checkout’ on Zapper’s website and print out the freepost shipping labels.Pack your items (your maximum parcel weight is 10kg, so keep an eye on that) and take them down to your local Collect+ centre – there’s over 5,500 of them, so we wouldn’t worry about finding one.How do Zapper pay?You’ve got a few options when it comes to payment. If your items are as you described, Zapper can either pay you as a cheque or directly via PayPal.For those of you looking to invest in a smartphone from overseas, PayPal might well be the best option. Huge smartphone vendors like GearBest and BangGood both support PayPal as a payment method, and because of PayPal’s strong consumer protection systems, you can be confident your new smartphone is in safe hands.So, what are you waiting for? Cash in on those old items today and have keep those savings where they belong.