Hi all,
I'm Note 5 owner model SM-9208 using telco which operate on LTE Band 3(1800MHz) and LTE Band 7(2600MHz). I accidently found way to solve this network issue. Whenever my LTE signal is on Band 7(2600MHz), I only get 2 bar signal and the connection is terrible. I even encounter network communication issue while doing speed test. But when LTE signal is on Band 3(1800MHz), everything is smooth. Below are the step on how to set preferred LTE band and how to disable non- preferred LTE band :
1. Open your phone dialer.
2. Type *#2263#.
3. ServiceMode will appear (see pic no 1)

4. Select Stack 1.
5. Network setting will appear (see pic no 2)

6. Select Band selection.
7. Band selection will appear (see pic no 3)

8. Select Automatic.
9. Automatic band selection will appear (see pic no 4)

10. In my case, I select my preferred band 3.
11. Click More and select Back until network setting appear again (see pic no 5)

12. Select Band Disable.
13. Band disable setting will appear (see pic no 6)

14. Select LTE.
15. Band disable setting LTE will appear (see pic no 7)

16. In my case, I select my LTE band 7 to be disable.
17. Exit from this service mode by clicking Home button
18. Open your phone dialer
19. Type *#0011#
20. ServiceMode will appear (see pic no 8)

21. Select Stack 1.
22. My phone is on LTE Band 3 (see pic no 9)
