metamask-mobile VS redux-persist

I would suggest use redux toolkit along with redux persist. I've been using that and everything is smooth. Even big project like metamask-mobile uses this combo.

However you can clone the MetaMask App Repo from https://github.com/MetaMask/metamask-mobile (I have done this before)

This PR was pushed in 5.14 (so an update may help) https://github.com/MetaMask/metamask-mobile/pull/5444

No, it isn't: https://github.com/MetaMask/metamask-mobile/blob/main/LICENSE

Storage: redux-persist, @react-native-async-storage/async-storage

Next, following their official document, I added some changes to my store.

redux-persist : For persisting data locally

One thing to keep in mind with persisting data to a device is that you maybe have to run migrations on that data if your app starts to use that data differently. https://github.com/rt2zz/redux-persist/blob/master/docs/migrations.md

for most applications, AsyncStorage works fine. also, you can use it with redux-persist or persist middleware of zustand. in this way, you won't even need to touch the AsyncStorage. my first choice as a database (or just a persistor tool) is zustand and AsyncStorage. this combination can solve storage issues most of the time.

That is also admittedly not very smart. Maybe you only want to persist certain slices, maybe you need to do other things with it. That's why https://github.com/rt2zz/redux-persist and other similar addons exist.