I want to buy a SMARTPHONE on ebay.com and Who can tell me If its safe and how do I do it.?

CHECK FEEDBACK BEFORE YOU MAKE ANY PURCHASES! But it is absolutely safe for the buyer. The Bad thing is, is that it is sometimes possible to recover information on smart phones. This can be dangerous if personal information was kept on there. Other than that sign up for an ebay account then GET A PAYPAL ACCOUNT - it is the easiest and safest way to shop online. eBay is just like going to a flea market (except it is worldwide and not face to face) Everything is sold as-is and most likely no warrenty. I would suggest buying from someone with actual pics. ASK QUESTIONS! and if something does go bad you can always contact ebay directly. They can resolve the situation. Of course there is always a risk in buying online but ebay has the least amount of things to worry about. So go ahead, bid. Its fun!