There are several types of ways to sell the old mobile phones. Many E- Commerce website is available for selling the old phones. Flipkart offers a great deal of selling phone. Just store the details of phones in Flipkart and they will come to collect it. Otherwise, there are more apps which are good for this purpose. Decluttr is best overall. Swappa is best for high payouts. eBay is the largest online marketplace and especially expert in selling phones.
Also Read- Top Samsung Smartphone in The World