PUBG Mobile players can control the sensitivity in the game settings section as shown below.

1. Select ▲ on the bottom right.
2. Select the settings.
3. Select the sensitivity settings tab.

In this menu, you can change your sensitivity while playing the game, including viewpoint, scope, aim, etc.

Also, you can add the settings for the weapon you want to use by selecting '+Add' icon in the [Exclusive Sensitivity] tab. In the case of weapons without the settings set, the all sensitivity will be applied.

Exclusive sensitivity can be saved in cloud to allow it to be copied/shared quickly. In the case of this feature, please take note that the settings of all of the current weapons will get uploaded all at once.