[Uhdre]

I cannot find a way to root htc desire 830 dual sim. Tried a lot of third party tools like kingoroot and others, but didnt worked. Also no luck in finding custom recovery apps too.

The phone is running Android 5.1

[Rukbat]

Rooting is different for every phone, for each version of Android, so someone has to figure out how to do it first. Evidently no one has figured out a way to do it for the 830 for 5.1. (Not all phones get a root method. Some get too old to use without ever having been rooted.)