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 You can use TrustWallet for that.

I don't know if they have a KYC implement it but try it and lmk 
 I haven’t heard of that one, I’ll check it out. Hope it’s on the appstore 
 It is! I even have the time to speak with their team of Latam and I have been using it as one of my main wallets.

But I haven't bought any crypto using a credit card so I can't tell you for sure. I do know it is a function they have.