clear data and cache for google play services and play store apps.Should work fine.

Dont come back. Thanks

If you specifically play PUBG then keep the resolution at 1440p, graphics settings for pubg should be "smooth" and frame rates should be "extreme". this will get you smoothest gameplay with great accuracy.

2nd quarter of 2019. 1st in line are 2018 flagships

mostly 2nd quarter of 2019 for s8 and note 8