Corning Gorilla Glass

The Samsung S6 uses Corning Gorilla Glass 4.  Structural integrity and chemical durability are extensively tested.

MMI Code

MMI codes typically start with "star" and end with "hash". This prevents the phone from thinking it is a phone number. MMI stands for Man Machine Interface. Manufacturers can define their own MMI codes. One code which is mandated for all manufacturers of GSM/UMTS/LTE phones is *#06# which shows the IMEI (International Mobile Equipment Identifier).