If someone will get access to my Coinomi wallet on Android 10 they can get access to my private keys? I mean if this someone have understanding of situation and get access full hardware access to my Android 10 smartphone storage.
If someone gets access to your Coinomi wallet it's obvious that he/she will have access to your private keys without any difficulties too. You should use Biometric security to protect your phone so that no one can access it but only yourself. Also do not forget to save your private key somewhere safe aside from your phone, if you have two email Ids maybe gmail and outlook then you can send it from your one email to another so that you can have it forever in your two emails.