You need to follow some simple steps to sell your phone on Yaantra: Download Yaantra BuyBack App on your phone. Grant permission to access Bluetooth, camera, GPS, etc. choose the brand, model, or you can select auto-detection. This app will evaluate your phone condition and give a health score. After evaluating the entire inputs app will offer the best market price for your phone. If you choose to sell your phone, a Yaantra executive be reach you in 24 to 48 hours to pick your device.