If you’re someone who watches smartphone durability tests and teardowns, you might already be aware that Asus’ latest gaming phone, the ROG Phone 5, failed miserably in YouTuber JerryRigEverything’s durability test. The phone cracked along the antenna lines, the screen stopped working, and the glass back shattered with minimal force. In the teardown video, Zack has now given insights into why the ROG Phone 5 could not survive the test.

In the teardown video, Zack explains how smartphones are usually built with batteries and motherboards placed lengthwise in the handset. To accommodate this placement, he says that smartphones have a tall metal ridge to help separate the battery from the chipset. However, the ROG Phone 5 has five separate internal segments consisting of two battery segments and three circuit board portions.