I’ve had the same style dailer for over a decade

Wow, mister/miss, you got some real willpower there. I can’t stand old UI like at all.

there’s not much about a dailer to be updated

Well security and UI are important.

If you want to access root files then yes but idk if this app supports root. For using the app? Definitely no.

It’s discontinued though.

I have no idea but apparently nobody makes dialer apps. What’s even more weird is that SMS and contacts apps are way less rare.