How do I get my Samsung Galaxy S5 in engineer mode

I have a Samsung Galaxy S5 that is on AT&T's network. The volume levels are too low. I've searched and saw where you can enter the code *#*#3646633#*#* for the Engineer mode, but when I enter that code, it doesn't do anything. Any help would be greatly appreciated!

Show Accepted Answer

Guest Quick Reply (No URL, BBcode or HTML)

Last post by sshanahan
3 hours ago
Last post by sherman
2 hours ago
Last post by gmcglynn
49 minutes ago
Last post by mkunde
2 hours ago