Pubg is one of the most popular mobile games in the world right now. But there are few problems that I faced : -
The early versions of the games very smaller in terms of memory but after several updates it has become a bulky app to be handled by a 2 GB ram phone.
There are many glitches that are reported continuously, but even after many updates the glitches are not removed.
Main emphasis is given on bringing more skins, guns, maps and other features rather than curing the old problems.
Too much lag takes place when there are a number of players near you.