I use multiple wallets. Since I trade many coins, I first choose the best exchange where the particular coin in traded. I convert tokens, coins into usdt, btc and etc. So based on what coin i hold, i use wallets. I use coinbase, binance, wazirx, coinomi, crex24, cointiger and etc. All these wallets are 2fa enabled along with other secure features. All are accessible via Mobile device.