But there is another catch in there but not for the wallet but to the user. And that's about copy and pasting the seed phrases and just putting it on the phone itself.
It might not be as risky as keeping it online, but if someone takes the phone and accidentally browses through that section of notes, it's possible to have a quick copy and paste to a messaging app to themselves or touch and delete some phrases.
It doesn't stop at someone taking your phone, browsing it and searching for the seed phrases you have stored on the phone.
The biggest risk is your phone becoming infected with malware, which often happens when downloading cracked applications from outside the official stores or browsing websites randomly. If the phone is infected with malware, it can easily use the granted permissions to access the conversations in popular chat applications such as Messenger or Telegram and steal saved chats that may contain seed phrases, as well as steal browser cookies, phone notes and gallery photos, and other sensitive data.