I personally haven't used this (have ledger and safepal- no promotion). Ledger research team had spent times on Ellipal Titan wallet and was able to
break their security. This doesn't seem good though I haven't found if they had solve that issue.
Thanks for sharing.
Ledger even won a bihnty from their bug bounty program.
The vulnerabilities were fixed:
https://blog.ledger.com/Ellipal-Security this kind of device, the security can be guaranteed only if:
The software running is genuine: very difficult to guarantee this on a Android phone)
The software is well written and flawless: We hope, we could help for this
The attacker has no physical access to the device - or a very strong password
Consequently, the security model of the device is very similar to the Bitfi wallet one.
Anyway, I wouldn't risk my coins in such device as it doesn't look as safe as a ledger.