Xiaomi just released their flagship Mi 9 smartphone. A powerful colorful fairly priced device. But is the Mi 9 durable? The only way to find out is with a durability test. We will be scratching the 'sapphire glass' camera lens cover to find out if the sapphire is real or not. I also have a diamond selector tool to test the thermal conductivity of the gemstone like material.
Source: Youtube
