HTC released a special edition its U Ultra flagship with a sapphire screen and naturally everyone was curious if it's really as great as it sounds. Luckily Zack from the popular YouTube channel JerryRigEverything put the device under the scratch test along with a luxury Tissot watch and provided the answer. A hybrid glass $50 screen protector for Galaxy S8 was also thrown into the mix. The test consisted of attempting to scratch the three panels with objects with increasing hardness. The screen protector fails at the level 3 on the Mohs scale, meaning any gold or silver jewelry might...
Source: http://www.gsmarena.com/htc_u_ultra_sapphire_edition_is_incredibly_scratch_resistant-news-24890.php
