How to Root Asus Zenfone 2 on Marshmallow
Asus Zenfone 2 is a spectacular device with great specs and an affordable price point. The top end Zenfone 2 is powered by a quad core 2.3GHz processor, 4GB of RAM and the PowerVRG6430 GPU. The device also has a 3,000mAh battery which is used to power the hardware and the 5.5 inch 1080 x 1920 resolution display. Depending on what version you pick up, you’ll land yourself with either 16GB, 32GB or 64GB of internal storage and there is also a microSD card slot which can boost your storage space by 8GB, 16GB, 32GB, 64GB or 128GB. The camera on the Asus Zenfone 2 shoots images in 13 megapixels and can record video footage in 1080p quality. There is also a 5 megapixel camera on the front of the device for capturing selfies.

Whilst the Asus Zenfone 2 ZE551L currently only runs Android 5.0, the Marshmallow update is coming. Besides the mostly stock experience, Asus has pre-installed their own home launcher which is also available in the Google Play Store.

REQUIREMENTS
The Asus Zenfone 2 is locked when you upgrade to Android 6.0 Marshmallow. However, you can downgrade back to Lollipop, and it is unlocked. Anyone who does receive an over the air update later must flash back to the stock Android 6.0 boot image before installing official Android 6.0 Marshmallow updates after they have rooted with this guide.
Make sure that the Asus Zenfone 2 is unlocked before upgrading to Android 6.0 Marshmallow. If you upgrade to Android 6.0 Marshmallow from a locked version of Lollipop, you have to downgrade to unlock it, and then upgrade to 6.0 Marshmallow.

Read more
https://gsmarena24..com/2016/07/how-to-root-asus-zenfone-2-on.html?m=1

Please do you have an Asus Zenfone 2 screen for sale ?