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No 4G LTE network option in Samsung S4 I9506

Hi guys,
I'm new in this group...

I have a problem with my Samsung Galaxy S4-I9506 android 4.3/Jelly Bean, the 4G LTE option doesn't appear on Network mode while my card and my area already support 4G LTE network.
When I checked at http://www.gsmarena.com/samsung_i9506_galaxy_s4-5542.php, it tell me that my phone support 4G LTE network.

Is there any way to fix my phone ? or to make my phone have a 4G LTE network ?

Thank You....
 
Thank you Jfalls63,
I tried the link as you given to me but this what I got, no 4G LTE option in network mode in my S4 phone.
Is there any other way to fix it ?

Thank you....
Screenshot_2016-01-15-19-21-55[1].png
 
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I'm in indonesia and it should be supported lte 4g

The Galaxy S4, i9506, is not compatible with a number of Indonesian networks I am afraid. Without knowing your carrier, as per my post #4 above, I cannot comment further.

Also, what are your exact firmware details, as per #1.3 of 29 Galaxy S4 models - know yours?
 
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The Galaxy S4, i9506, is not compatible with a number of Indonesian networks I am afraid. Without knowing your carrier, as per my post #4 above, I cannot comment further.

Also, what are your exact firmware details, as per #1.3 of 29 Galaxy S4 models - know yours?

This is my phone version :
AP : I9506XXUBND2
CP : I9506XXUBMK7
CSC : I9506OLBBND1
According to my phone version above, what firmware should I have to download/upgrade ?
 
Upvote 0
Hi guys...
My galaxy S4-I9506 now can be using 4G/LTE by dialing *#2263#, after dialing will be appear menu "Service Mode" like below :
[1]Automatic
[2]WCDMA Band Preference
[3] GSM Band Preference
[4] LTE Band Preference
[5] WCDMA/GSM Mode Only
[6] LTE/WCDMA Mode Only
[7] LTE/GSM Mode Only

then I choose [4] LTE Band Preference. Without updating firmware, etc.
But my question now is why still no option LTE in network mode ? Does it work properly ?
 
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