D838 Not Getting 4G/LTE topic

My D838 is currently on D83820c-TWN
I am getting 4G/LTE on other phones when I move my simcard.
I have tried different ROMS but still cannot get 4G/LTE
Tried to edit my buildprop before and it caused a bootloop.
Help would be greatly appreciated.
Thank you.

Screenshots:

When I try to open the service menu:


When I try LTE only in RAT Selection:


In Preferred network mode settings:

[Q&A] Official 5.0.1 Lollipop for D838 20c TWN 16 Gb topic

Q&A for Official 5.0.1 Lollipop for D838 20c TWN 16 Gb

Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer.

Before posting, please use the forum search and read through the discussion thread for Official 5.0.1 Lollipop for D838 20c TWN 16 Gb. If you can't find an answer, post it here, being sure to give as much information as possible (firmware version, steps to reproduce, logcat if available) so that you can get help.

Thanks for understanding and for helping to keep XDA neat and tidy! :)

Is Lollipop 5.0.1 safe to flash on D838? topic

I am confused, some say OK, some say NOT OK, can'tc even make call and SMS.
What is true?
Go or NOGO?

I am having a D838,
which ROM to flash?

[Q&A] Mod D838 Transparent Weather Widget topic

Q&A for Mod D838 Transparent Weather Widget

Some developers prefer that questions remain separate from their main development thread to help keep things organized. Placing your question within this thread will increase its chances of being answered by a member of the community or by the developer.

Before posting, please use the forum search and read through the discussion thread for Mod D838 Transparent Weather Widget. If you can't find an answer, post it here, being sure to give as much information as possible (firmware version, steps to reproduce, logcat if available) so that you can get help.

Thanks for understanding and for helping to keep XDA neat and tidy! :)

An LG G Pro 2 D838 in Egypt !!! Problems topic

I bought the D838 from Emirates 2 weeks aga , and use it in Cairo/Egypt. I have the following 2 issues:
1- Not bale to make Video call , and always receive the message :" When in Roaming, no video call is possible" . I have checked with Vodafone support in Cairo and made sure that Global roaming is off, but still get the same message.
2- can not receive or send MMS. it always fails.
3- There is a software update on the phone, and every time I try to update, I get error after few seconds.

To me it seems that the ROM is only for Korea, so the phone , when using Vodafone Egypt, thinks he thinks am using a Korean SIM in Cairo, so there is roaming. I can not find any other reason. Except those 3 issues, I am using the phone for calls, sms, emails, Facebook, whatsapp,...
Can some one advise ? is there a ROM that I can download safely to overcome this ?
LG support in Cairo, said they only support LG G Pro and nit Pro 2.

Thank you all in advance