Hello!
I did a little write up on how to manually turn on LTE with the galaxy S5 if it is selected to be off by default. Not sure why my LTE was disabled in the settings. Perhaps because my area has not launched yet? Anyway. I did these steps and what do you know? Full LTE (by a known LTE tower) If you have never done this I have made a step by step to get LTE enabled if it is turned off. Here we go! (if you would like a photo step by step please see my post here: http://forums.androidcentral.com/samsung-galaxy-s5/380905-sprint-users-lte-manual-override.html#post3582412
1.) Before starting you must obtain your MLS number. I did this by calling Sprint directly at 866-264-1282. I just varified my info then asked for my MLS number. I told her I was just running diagnostics. You could also say you want to do a factory reset or something. Either way she gave it to me easily.
2.) Now that you have your MLS number, you need to go to the phone dialer and type in ##3282#
3.) Now you will need to select Edit (change mode)
4.)Now you will need to input your MSL number you obtained:
5.) Now that you are in the Data Programming menu, scroll to the bottom and select LTE:
6.)Now you are in the LTE portion. Click LTE Enabled:
7.) Now mine was deselected and said it was off. This all came about because I was snooping for snoop sake and found this off so I turned it on by checking it:
8.) I also checked each Band (3, 26, 41). My band 3 was off so I turned it on as well.
9.) I then backed all the way out and restarted the phone.
10.) When it came on...LTE!!!!! Keep in mind I was by a tower that was known to have the LTE upgrade.
Many thanks to Moderator lilotimz for the help and the spark that started my curiosity.