The Uncoin is very bad and slower app.When I want to sale my bitcoin so I installed the uncoin app but the OTP not recieve I again try anf finally the app registered.Then when I sale my bitcoin the charges are applicable and no promo code are available new user.Then I know this app is a cheater and fraud app.It cheats people.You didn’t use this app for friendly use because it is not safe for transaction and also get slower function and features are very bad and quality less application.So don’t install this app and don’t waste your valueable time.