Thanks!

What I would love to see in the future is some QR-Code scanning feature for this Mobile Version for payments. Would be an awesome swiss knife then :)

Yea that's definitely something we could implement. Good idea!

What is if you loss your smartphone? How save are the funds?

The App is pretty secure, for using your wallet, a thief would have to first unlock your phone, then know the PIN you use in App, and somehow have access to your biometrics.
TL;DR : FUNDS ARE SAFU

Will be on-chain Tokens (SMT/HMT) later added too if there are implemented?

Yes, we will always make it a priority on both the extension and the mobile App to implement new features from Hard Forks, especially this one.