To be honest, I still use this Trustwallet but for a hot wallet.
The thing that I liked most is this wallet compatible with several blockchains that could easily navigate your coins to another exchange.
But of course, if your purpose storing in the long term, I'll not recommend this wallet either. Disregard the security while it is easy to use in a convenient way as a hot wallet, not your cold wallet. It's better than using a web wallet like MyEtherWallet.
This is about bitcoin wallet, not altcoins wallet. Even for online bitcoin wallets, Trustwallet is not recommended at all.
For Linux and Windows, Electrum is recommended most. Also for Android but just that it has no control and fee customization.
For Android, iOS and macOS, Bluewallet is recommended.
Exodus wallet would be preferable for me in IOS phones.
It is a close source wallet just like Trustwallet.