Yes, its correct region. Also one of the modules do work fine on another SBC running android 9.0, Leez p710. Same sim card.
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You can try to flash the ubuntu rom and have a test.
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Thanks I will test. Simcard is Norwegian and location is Norway. Teleoperator is telenor, Module used is em06-e
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We got the 4G to work. But only with a few sim cards. I will try Ubuntu to see that there are no hardware issues, and that android build works as it should.
LTE works stable on the ubuntu rom, so the hardware and sim card should be fine. How can we make it work better on android? In ubuntu I have all these options to choose APN and other mobile data settings, not so in android , there the options are greyed out in the mobile settings menu.
You can flash the new android rom and have a try. Thanks!
I flashed the newest ROM several times, clean wiped EMMC several times, tested multiple SIM cards. Tested Ubuntu.
My conclusion:
- 4G works fine in Ubuntu.
- I am not able to select what mobile network to connect to in Android. Deselecting “Automatically select network” under advanced pane in mobile settings reverts me back to the main menu. Network in Ubuntu is correct, in my case “Telenor.smart”, in Android it states “Telenor Telenor” with the same sim card. I have no way to set another network manually.
3.4G works with some sim cards in android. Therefore I believe it is a mobile network configuration issue.
I believe something is missing for the 4G to work properly in your latest android build.
Which operator does your SIM card belong to?
Telenor. I believe telenor.smart is the correct APN in this case
I need you to provide more logs for me following below steps.
# adb shell
# su
# mkdir /data/quectel_debug_log
# reboot
# adb root
# adb remount
# adb pull /data/quectel_debug_log/ .
And provide the three log files. Thanks!
<1> xxx_logcat.txt
<2> xxx_radio.txt
<3> xxx_dmesg_mainLoop.txt
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Thank you, I will look into it and come back with the logs.
Anyone that can guide me in the world of minicom? Terry recommended to try “change the usbnet mode to 0 on ubuntu system, then update the android system” following this guide: https://docs.khadas.com/vim3/HowToUseLTEModule.html
But after starting minicom it just goes in a “listening” loop or similar, I cant execute any commands:
khadas@Khadas:~$ sudo minicom -D /dev/ttyUSB2
Welcome to minicom 2.7.1
OPTIONS: I18n
Compiled on Dec 23 2019, 02:06:26.
Port /dev/ttyUSB2, 09:01:25Press CTRL-A Z for help on special keys
+EMM ERROR: 1,17
+CREG: 1,“55F1”,“DCF317”,2
+CIEV: 6,0
+CGREG: 2
+CGEV: NW DETACH
+CIEV: 6,1
+CGREG: 1,“55F1”,“DCF317”,2
+CREG: 1,“55F1”,“DCCC24”,2
+EMM ERROR: 1,17
+CREG: 1,“55F1”,“DCF317”,2
+CIEV: 6,0
+CGREG: 2
+CGEV: NW DETACH
+CIEV: 6,1
+CGREG: 1,“55F1”,“DCF317”,2
+CREG: 1,“55F1”,“DCCC24”,2
+EMM ERROR: 1,17
+CREG: 1,“55F1”,“DCF317”,2
+CIEV: 6,0
+CGREG: 2
+CGEV: NW DETACH
+CIEV: 6,1
+CGREG: 1,“55F1”,“DCF317”,2
+CREG: 1,“55F1”,“DCCC24”,2
+EMM ERROR: 1,17
+CIEV: 6,0
+CGREG: 2
+CGEV: NW DETACH
+CIEV: 6,1
+CGREG: 1,“55F1”,“DCCC24”,2
+EMM ERROR: 1,17
+CREG: 1,“55F1”,“DCF317”,2
+CIEV: 6,0
+CGREG: 2
+CGEV: NW DETACH
+CIEV: 6,1
+CGREG: 1,“55F1”,“DCF317”,2
+CREG: 1,“55F1”,“DCCC24”,2
+EMM ERROR: 1,17
+CREG: 1,“55F1”,“DCF317”,2
+CIEV: 6,0
+CGREG: 2
+CGEV: NW DETACH
+CIEV: 6,1
+CGREG: 1,“55F1”,“DCF317”,2
+CREG: 1,“55F1”,“DCCC24”,2
+EMM ERROR: 1,17
+CIEV: 6,0
+CGREG: 2
+CGEV: NW DETACH
+CIEV: 6,1
+CGREG: 1,“55F1”,“DCCC24”,2
+CREG: 1,“55F1”,“DCF317”,2
+CREG: 1,“55F1”,“DCCC24”,2
Typed in the command without any visual characters showing, hit enter and got the answer OK. Guess its OK then 
Edit: @Terry Looks like it worked setting the usbnet mode to 0 on ubuntu system and flashing android again. Thanks for your help! 
I’ve had exactly the same issue as Makro, trying the minicom fix now then reflashing via USB to Android again. Will update this thread with my results.
Question, since changing the USBMode to PCIe in Android and adding the boot logo, KRescue no longer boots from SD, for that matter nothing boots from the SD card slot. Is this normal?
@ethanfe did you reactivate upgrade mode ?
please use KEYS MODE for Quickly setting upgrade mode
cheers
Setting usbnet to 0 in Ubuntu and then re-flashing android didnt work for me. I was able to get LTE radio data through third party apps so communication to the Quectel card, but could not set the APN, the android interface would crash. I tried all the versions that could be flashed over USB-C, same issue. Hence the second part of my question, I needed to get back into Krescue.
In regards to booting back into KRescue, somehow I must have set the board to default to eMMC. It ignored any SD card. I reflashed Uboot to EMMC via the USB-C method and it booted from KRescue right away. (Thanks for tolerating my off topic element)
Ah I see where the problem arises from, good to see it fixed,
That has happened to me as well, I think its still WIP
Hello ,
I am using VIM3 AOSP 12 with M2X Extension, I have inserted a simcard in nano 4G and its being not recognize.
Any tackle to solve this issue? it would be much appreciated
Thanks in advance