[GUIDE] to enable DualSim on SingleSim Moto Z by xequtor

[benzinerwin]

And how do we obtain root without flashing twrp? Most descriptions go this way

Well, it also works without touching the fsg partition, but I still have to check if that works for stock images as well...

 

[b0mmel]

No, it works with stock-rom as well.
(It's not even necessary to flash a different recovery... However, I still need to gather some info from people with a factory-made dual-sim phone to maybe address the second imei = 0 thing).

Got it - I start a request in a poll regarding IMEI count on the box - maybe somebody will helps us here.

 

[ottmi]

Well, it also works without touching the fsg partition, but I still have to check if that works for stock images as well...

I don't think that it would work for stock images. The baseband is loaded by rmt_storage. Looking at the strings in this binary, it reads the following properties:

ro.hw.device
ro.fsg-id
ro.carrier
ro.hw.radio
persist.radio.multisim.config

And from these values it obviously builds the filename of the baseband to be loaded:

/fsg/%s_%s.img.gz
/fsg/0.img.gz
/fsg/%s_%s_%s_%s.img.gz
/fsg/%s_%s_%s.img.gz

In my case, the corresponding property values are as follows and it loads sheridan_row.img.gz as baseband.

[ro.hw.device]: [sheridan]
[ro.boot.fsg-id]: []
[ro.carrier]: [reteu]
[ro.hw.radio]: [ROW]
[persist.radio.multisim.config]: [dsds]

I'm assuming that persist.radio.multisim.config has not been set yet when rmt_storage starts as it starts quite early in the init process..

 

[topcaser]

Is there a way to get the second SIM running without unlock the bootloader? Probably not, isn't it?

 

[Fukato1987]

Hello,
i don't know if my device is working due to the sd card -sim card glue.
my old dual sim phone need the sim card on the other side, so at home i have to rotate it and glue it again.

but if i set up the following command(at work):

fastboot erase modemst1
fastboot erase modemst2
fastboot erase cache
fastboot reboot

i will get some strange output(please notice "has-slot:modemst1: not found"):

fastboot erase modemst1
(bootloader) has-slot:modemst1: not found
erasing 'modemst1'...
OKAY [  0.178s]
finished. total time: 0.178s

fastboot erase modemst2
(bootloader) has-slot:modemst2: not found
erasing 'modemst2'...
OKAY [  0.184s]
finished. total time: 0.184s

fastboot reboot
rebooting...

finished. total time: -0.000s
i will get this messages are their normal?

---------- Post added at 08:43 PM ---------- Previous post was at 08:42 PM ----------

Is there a way to get the second SIM running without unlock the bootloader? Probably not, isn't it?

no you have to modify configs in "/system" partition

 

[nachtfalke7711]

First IMEI 0

I made a mistake and my first Imei is 0. Flashing NANDROID Backup is not possible because TWRP says its write protected. Any ideas?

 

[benzinerwin]

I made a mistake and my first Imei is 0. Flashing NANDROID Backup is not possible because TWRP says its write protected. Any ideas?

What mistake, what did you do exactly? Did you flash erase everything meanwhile (DON'T!)? What kind of nandorid-backup did you do, what partitions does it include ... ect?
Is TWRP flashed as recovery or did you just soft-booted it via fastload?

 

[nachtfalke7711]

The Second SIM suddenly wasn´t recognized anymore. I tried to redo the steps from post #1: Deleting and Renaming the 4 files (griffin and the sheridan) and do the fastboot steps:

fastboot erase modemst1
fastboot erase modemst2
fastboot erase cache
fastboot reboot

in bootloader menu.
I haven´t erased anything (hope so). I only copied the complete "fsg" folder back from SD to /system and tried the steps again. I also tried to install different roms (incl. wipe cache/data). SIM 1 IMEI is "unbekannt" = unknown and no baseband is available.
Meanwhile there was also no SIM-Card Menu in the settings. This was solved by toggling the app "MultiSIM-toggle"

 

[benzinerwin]

The Second SIM suddenly wasn´t recognized anymore. I tried to redo the steps from post #1: Deleting and Renaming the 4 files (griffin and the sheridan) and do the fastboot steps:

I haven´t erased anything (hope so). I only copied the complete "fsg" folder back from SD to /system and tried the steps again. I also tried to install different roms (incl. wipe cache/data). SIM 1 IMEI is "unbekannt" = unknown and no baseband is available.
Meanwhile there was also no SIM-Card Menu in the settings. This was solved by toggling the app "MultiSIM-toggle"

Ok, you need to restore the fsg & persist partitions. Do not copy file by file because this can easily go wrong. Best do it via fastboot. Then erase modemst1, modemst2, cache. Do you have a valid fsg.img?

 

[nachtfalke7711]

OK, i have copied the fsg with ES File Explorer before all changes to the sd card & to the pc. But i have no "persist" partition.

 

[benzinerwin]

OK, i have copied the fsg with ES File Explorer before all changes to the sd card & to the pc. But i have no "persist" partition.

Start your phone into recovery mode (TWRP) and have the PC connected.
From the PC commandline:

adb shell "dd if=/dev/block/sda3 of=/tmp/sda3.bin"
adb pull /tmp/sda3.bin

Kepp that file, it's an image of (what's left of) your persist-partition.
You can send that file to me and I can try to reconstruct a working partition image. (It's just an offer.)

Meanwhile, there may be an alternative (more like a work-around): do you have a backup of both partitions modemst1 and modemst2? Though, I guess not...

 

[Vcek]

Im just curious about how the 2nd SIM registers with IMEI 0, doesn't the Carrier block the sim?

 

[benzinerwin]

Im just curious about how the 2nd SIM registers with IMEI 0, doesn't the Carrier block the sim?

it depends on the carrier. As long as there are no legal obligations regarding the handling of IMEIs, they usually ignore them (invalid / dupes). The providers are basically interested in a valid IMSI (subscriber serial number, provided by the sim card) in order to generate revenue. Only if they suspect fraud, they might lock you out.

 

[grafvonvolta]

Missing switch

both sim cards are working fine... but I can't switch them off separately. The switches are missing.

Does someone else have this issue and maybe a fix?

 

[apocalypse_bg]

I ordered a (supposedly) dual-SIM version of the SIM tray from Aliexpress. The seller was not quite sure about whether or not the tray can take two SIM cards, but I decided to get it anyways: if I need to cut anything, I'd rather cut a spare.

When is the delivery? I'm thinking of doing the same instead of modifying the original tray, before attempting the software side of things

 

[aoleg]

Typically, about a month.

 

[InChi]

Bought one from ebay Germany (delivered from China): http://www.ebay.de/itm/172391547845
Delivery took about two weeks. Fits and looks like original one. I have not done the software changes yet to enable Dual Sim, so using it still only with one Sim and SD.

 

[apocalypse_bg]

Bought one from ebay Germany (delivered from China): http://www.ebay.de/itm/172391547845
Delivery took about two weeks. Fits and looks like original one. I have not done the software changes yet to enable Dual Sim, so using it still only with one Sim and SD.

I've ordered​last week from the same vendor .. so I'll wait a little bit more to see which way will the solution develop, I have weak hope to be doable without voiding the warranty

 

[Nash123]

Got that one too. Took only several days until it arrived.

2 SIM cards fit and function well (without the need to cut something), but with the Micro-SD below the second sim it is too big to fit. I guess I have to "optimize" the second sim somehow to get the sim-tray inside the phone.

Thx to all who contributed to make the Moto Z even more awesome.

Edit: What is really missing in lineage 14.1 is a button to turn off sims individually. Really annoying not being able to do this. I guess I revert back to single sim usage.

 

[topcaser]

Google for sim card mod or look in the other thread dealing with two-way sims

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