How to change Network Mode to 4G LTE only in galaxy S5 and other phones without root 100% working

This is simplest way to change your network mode into 4G LTE only in samsung phones with lolipop or higher operating systems.
Service mode is locked in these phones. So you have to watch first step of video carefully to unlock service. At first i can not find any way to unlock servise mode but after lot of research i have found this way and it is available for you.
Goodluck
4G LTE only mode
Without root
Samsung
On samsung Galaxy S5
Convert to 4G LTE
Using 4G in low signal areas
How to Force 4G LTE mode
Forced 4G connection
Internet boost

Видео How to change Network Mode to 4G LTE only in galaxy S5 and other phones without root 100% working канала Tech Talk