Motorola LEX L11

[SemSam]

Hello guys. I already bought Motorola LEX L11 for my personal use in Ukraine. In my country we have problems with LTE signal and electricity and I search for device who solve this.

Device works on Android 9 and donʼt see any updates but еhe internet tells me this device can be upgraded to Android 11/13 and it will be so good.

Boots normally and Android works fine, but there is no cellular connectivity at all. The phone detects SIM cards but never registers on a network.

Current status:

Mobile network state: Unknown
Service state: Out of service
Modem Config version: INVALID_GEN_LEX11 / 0x801080C
Baseband: S.AT.3.1-00839-SDM660_GEN_PACK-1

It looks like the modem config (MBN) is missing or not loading.

What I've checked so far:

• Factory reset from recovery
• ADB works normally
• Fastboot works
• Attempted to enable DIAG via:

setprop sys.usb.config diag,adb

but the property change is blocked.

• QPST / QFIL installed but no Qualcomm DIAG port appears, so the device cannot be accessed by QPST.

• Tried looking for modem firmware (NON-HLOS.bin) or OTA packages for LEX L11 but couldn't find anything publicly available.

Because the baseband is present, I assume the modem firmware itself is not completely dead, but the modem configuration profile may be missing or corrupted.

Questions:

1. Is there any known way to enable DIAG on LEX L11 without root?
2. Are modem configs stored in /vendor/firmware_mnt/image/modem_pr/mcfg on this device?
3. Has anyone extracted an OTA package or modem firmware for LEX L11?
4. Could this be fixed via EFS restore or QPST if DIAG were enabled?

Any pointers, firmware dumps, or OTA packages would be extremely helpful.

Thanks!

 

[ME801]

I'm a current owner of a LEX L11, and have had it for about 4 years. It's a decent rugged device and I run on FirstNet/ATT. Obviously you don't have a FirstNet system in your great country. I had Android 9 and to get it to Android 11 I had to take it to a Moto dealer. I was able to download the Android 11 update over the air, but it was corrupted and no about of trying on my part would get it to uninstall and re-install. My experience with the L11 is it's a good, rugged device that runs the Radio Services app to mirror my APX radios, being able to hot swap batteries and hotspot FirstNet COW are game changers, but as a daily use phone it leaves a lot to be desired. The L11 is my work phone, I have a Samsung for my personal phone and its a much faster and more stable device.
Sadly I don't have answers to your questions, but I am a diehard supporter of your country in this difficult time.

 

[kb0uxv]

I recently switched from LEX11 to a Sonim XP Pro 5G. I ran the LEX for over 5 years. Its a good durable phone, my biggest complaint is the overmold will peel over time and the camera is horrible. The radio pairing functions are unusable for talkout in P25 trunking due to PTT delays. Its okay in conventional radio modes. I had to switch to the Sonim as the LEX11 was constantly freezing up. Also my department IT was going to ban it from connecting to the corporate network since the OS was so old, they are now requiring Android 13 or newer devices. Also the US is switching from 4G to 5G cellular I was having increasing problems with coverage as technology upgrades are occurring at the tower sites. I use Verizon here, and I believe the device is only certified in the US for AT&T/Firstnet and Verizon. Not sure on the European market. I did take a trip to Belgium and France several years ago with the LEX11, coverage there was fine using Verizon's "travel pass" option so it does seem compatible at least in Western Europe.

The device was sunset at Android 11 by Motorola. I was told by Motorola that they are no longer developing OS upgrades or security patches. LEX11 upgrades in the US are easy, the product support team sends them based on your device's IMEI number. It will go out over Wi-Fi, in fact their documentation recommends doing this on WiFi rather than LTE. The US procedure is to call +1 800 674-4357, "Infrastructure / TSO LTE," (Mon - Fri: 8am - 5pm CDT). Be prepared to give your IMEI number. Erika is good to work with, she works on alot of the LEX support requests. They may be able to advise on what European carriers are supported. I believe these do not support E-SIM and require a physical SIM in the pop out tray (careful the tray door is easy to damage as you have probably noticed).

Hopefully this method is the same for Eastern Europe and you are able to call that number. If not maybe you can source a European support number and ask them to be transferred to LTE device support.

Be warned going to Android 11 does seem to slow the device down, I assume this build is more hardware intensive. I am not sure what's to blame but moderately intensive apps and the Android 11 build was causing my device to lock up several times a day requiring hard reboots. The cause could also have been an aging device.

For what its worth I believe the last Lex11 build is R40.36.10.

The app "Network Cell Info" is a good app to see some data about LTE connection on your device. It might help show some more clues on network registration errors. Good luck.

 

[SemSam]

I want to clarify an important detail about my previous post regarding the Motorola LEX L11: the device I’m using is the Japanese market version, the LEX L11j.

This is relevant because I am experiencing cellular connectivity issues — the SIM card is detected, but the cellular radio never activates, and the device stays out of service.

All previous technical details I shared (Android 9, baseband S.AT.3.1-00839-SDM660_GEN_PACK-1, persist.radio.multisim.config = ssss) still apply.

I’m hoping this clarification helps anyone who has experience with the Japanese LEX L11j or similar regional variants to provide guidance. Any advice on enabling international SIM support or accessing service/engineering menus would be highly appreciated.

 

[MTS2000des]

Does your desired carrier support the LTE bands you are trying to use? According to the spec sheet, the Asia/Pacific bands supported are:
APAC & LA: 1, 2, 3, 4, 5, 7, 8, 19, 26, 28, 38, 40, 41

 

[SemSam]

Does your desired carrier support the LTE bands you are trying to use? According to the spec sheet, the Asia/Pacific bands supported are:
APAC & LA: 1, 2, 3, 4, 5, 7, 8, 19, 26, 28, 38, 40, 41

Yes. Ukrainian carriers use LTE bands 3 and 7, which are supported by this device.

According to the LEX L11 APAC specification it supports:
1, 2, 3, 4, 5, 7, 8, 19, 26, 28, 38, 40, 41.

So in theory it should work here.

The SIM card is detected correctly, but the device never attempts to register on the network and shows "No Service".

 

[MTS2000des]

Your network operator may not have white listed the IMEI. Common practice here in the states. You should probably contact them and inquire if this is the case. Just because a device supports a given set of bands does not mean a network will allow it or provision it if it's something they don't support.