With the newly launched Zenfone 6, Asus has completely revamped its ZenUI Android skin, making it among the lightest out there - whereas before it was quite heavy on the customizations. This signifies an interesting strategy change for the company, which seems to be embracing a OnePlus-like philosophy now, when it comes to software. That said, the new ZenUI 6 still isn't "stock Android" per se. On the other hand, Asus has outed a beta build of Android 9 Pie for the Zenfone 4 Max ZC554KL and the Zenfone 4 Selfie (both ZB553KL and ZD553KL models). And this, weirdly enough, is a stock-like...
Source: https://www.gsmarena.com/asus_zenfone_4_max_and_zenfone_4_selfie_get_a_taste_of_android_9_pie_through_beta_builds-news-37201.php