We need to clear this misconception, mobile wallets that gives you access to your private keys are one of the safest. With these wallet you are fully liable for your funds and have full control. I am currently using Atomic Wallet its by far one of the best. Previously what i did was to download a bitcoin wallet, a wallet for eth, another for ripple etc. All this wastse space and makes managing some way. With atomic wallet I can manage btc, eth, erc 20 token, bnb, xrp, xtz on one platform. You get access to an in built exchange for quick trades, get reward if you use the exchange service, staking etc