Uphold Wallet is my wallet of preference, its interface is very easy to use, you can add or remove cryptocurrency or currency cards, it is very safe, it has 2-step verification mandatory when making each transaction and verification by KYC, I was verified in a matter of minutes. Until now I have not had any problem, the exchange transactions to the wallet are fast as well as from card to card, it has an application available for Android that is very effective, ordered and with multiple languages, the commission that charges uphold for exchanging money from one card to another if it is a little expensive compared to other wallets; however I recommend Uphold for its safety and easy handling.