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How to use EC20 4G Module with RK3399 build Android 7.1 from source

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Posted at 12/5/2017 17:28:30     
I am building the RK339 Android 7.1 ROM from source.  I download to board.  The board works well.
In Settings I go to More -> Mobile Plan and it says "Please insert SIM card and restart".

The China Mobile SIM is installed.  I'm located in Hong Kong.

I go to same menu and see same message about inserting SIM card.

Do I need to build the ROM with a custom setting ?

Thanks

Tim

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Posted at 12/6/2017 17:23:44     
Make  sure your firmware support EC20 .
Insert the direction of SIM card be correct ,  the gap is ouside
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Posted at 12/6/2017 17:33:06     
Hi

By "firmware" do you mean the Android 7.1 ROM that I'm building?   If so...that is my question...what do I need to do at build time in order to get support for EC20 ?

Thanks

Tim
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Posted at 12/6/2017 18:47:32     
Ok it turns out that the SIM card was inserted incorrectly.  Its a shame that its possible to do that but anyway its working now.

Thanks for reading

Tim
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Posted at 12/21/2017 15:23:05     
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