His information is inaccurate. BestBuy has an exclusive color on the S6 "Business" Line. They offer a chrome S6. It's different in all respects from an S6/Edge+ in Titanium Silver.
It is working with LTE. Since most of the world doesn't use the term LTE to refer to 4G, international ROMs don't usually display the icon. US LTE will be displayed as 4G, but it is only cosmetic.
You must use the drop down to select local and then enter the command at the prompt for Nickname.
Mike
Sent from my SPH-D710 using Tapatalk Premium Ultimate 2 Supreme
Try sorting by first name last and moving the first last name to the first on the list. Then transpose first and last names, sort by first name first, then once again by first name last/last name first.