Develop Bugs

Dual-Sim G4 questions

So I decided to buy a G4.
I know about the boot loop issue, but LG fixes it if it happens, so that's okay.
My Samsung devices all had issues (multiple), so yeah.
Anyway, I have a couple of simple questions regarding the dual sim edition.
They cost the same in the country, so I figured I might buy the dual sim one...but...
- Does it have the same, latest (MM) firmware?
- Do you get any annoying notification if you just use ONE sim card in it?
- Does it still have a microSD card slot besides the dual SIM slot?
The thing is, MNOs are becoming popular in my country.
So you can finally get cheap mobile internet, but on a separate sim card, of course.
This way I could just toss in a second SIM once I get a good deal, and hook my mobile data on that.
Thank you guys!

h8Aramex said:
So I decided to buy a G4.
I know about the boot loop issue, but LG fixes it if it happens, so that's okay.
My Samsung devices all had issues (multiple), so yeah.
Anyway, I have a couple of simple questions regarding the dual sim edition.
They cost the same in the country, so I figured I might buy the dual sim one...but...
- Does it have the same, latest (MM) firmware?
- Do you get any annoying notification if you just use ONE sim card in it?
- Does it still have a microSD card slot besides the dual SIM slot?
The thing is, MNOs are becoming popular in my country.
So you can finally get cheap mobile internet, but on a separate sim card, of course.
This way I could just toss in a second SIM once I get a good deal, and hook my mobile data on that.
Thank you guys!
Click to expand...
Click to collapse
1. Yes it has lastest marshamallow.same as single sim variant.
2. 2nd sim will show message as "service disabled" if you disable 2nd sim
3. yes it has micro sd card.but it doesn't support wireless charging.

dual sim compatibility

Hello all. I have recently purchased a Moto Z Play US version. I noticed in the sim slot there are pins for the 2nd sim. But the tray itself has a cover over the 2nd sim tray. I was wondering if I buy the dual sim tray do you guys think that it will work?
Thanks

It will not work, it needs software support.

Maybe if he flashes a european firmware too? Dunno...

Single and dual sim -> how to switch tu dual ?

Hello,
I recently purchased a ZX2 compact. I was expecting a dual sim version, but in fact it is a single sim
Except the dual sim, all other features are exactly the same. Is there any chance in changing the sim trolley by a dual version that i will have acces to the dual sim ? Firmware are different ?
thanks to all for your advices
Coyotitoo

Coyotitoo said:
Hello,
I recently purchased a ZX2 compact. I was expecting a dual sim version, but in fact it is a single sim
Except the dual sim, all other features are exactly the same. Is there any chance in changing the sim trolley by a dual version that i will have acces to the dual sim ? Firmware are different ?
thanks to all for your advices
Coyotitoo
Click to expand...
Click to collapse
Not possible. The hardware reader and radio is different. Same philosophy as why using an film ribbon adapter to layer dual sim and microsd to use all 3 inside dual sim active simultaneously does not work because there is a hardware switch that restart the phone and only enable one reader at a time.

Hi, there's 3 Sony Xperia XZ2 Compact variants:
H8314 - SINGLE SIM CARD
H8324 - DUAL SIM CARD - Hybrid style( micro sd card or the second sim card)
SO-05K - JAPAN VERSION - I don't know if its dual.
I hope you can figure it out which model do you have it.

Question Australia single physical sim

So the Australian model for some reason goes one single physical sim and an esim rather than dual physical sim+ esim. Hopefully we can start a discussion to see if we can convert it to a dual physical sim by changing csc and getting a physical dual sim tray

does the phone itself has support for second physical sim?

Looking inside the slot the pins are there, but the sim holder only has space for one sim, currently, there are no replacement trays available so I can test it.

Question Dual sim tray disabled in software (SM-S901U1)?

Hi all,
I recently purchased a Galaxy S22 (SM-S901U1 - S901U1UEU2AVF7) from Google Fi with the intention of using 2 physical SIM cards and 1 eSIM on it.
On Samsung's website (https://www.samsung.com/global/galaxy/galaxy-s22/specs/) it says some models have "two Nano SIMs and one eSIM".
Upon receiving my S22, I took out the tray and noticed it could only fit one physical SIM card, however, looking at the sim card slot through a stereo microscope it looks like there are SIM card contacts on either side of the slot (meaning the physical connection is there).
Also, doing a `*#06#` shows IMEI1, IMEI2, and EID; which to me signifies the phone itself could support the "two Nano SIMs and one eSIM" option.
I went ahead and bought an S22 replacement SIM card tray with support for 2 SIM cards, and put another SIM card on it but can only see "SIM 1" and "eSIMs" under "SIM card manager".
It honestly looks like Samsung disables the second SIM card in software for the US market.
Can anyone here confirm my suspicion and if so, do you know if there is a way to change that software restriction? Thanks

The second IMEI is specifically for the eSIM, the EID is what one would consider the ICCID if it was a physical SIM.
Only models outside the US have the option of a dual physical SIM.

GenesisDH said:
The second IMEI is specifically for the eSIM, the EID is what one would consider the ICCID if it was a physical SIM.
Only models outside the US have the option of a dual physical SIM.
Click to expand...
Click to collapse
Thank you for your response.
Do you know if that is a limitation imposed by hardware differences (i.e.: the US version is missing a radio or SIM card slot) or is it imposed by software?
(I have purchased a dual SIM tray to put into my S22)
If it is the latter, would flashing a ROM from a region with support for dual sim cards (and the same processor) enable dual sim cards for the S901U1?
Cheers

I wouldn't know if the hardware doesn't support it.
If I had a guess, it would probably be locked at the baseband with software, similar to the OnePlus 9 Pro. The latter was later confirmed by users; even though the hardware was the exact same across all devices of that model, changing to a different ROM changed nothing as the baseband retained its state.
Also, most if not all non-US models use the in-house Exnyos SOC, so finding a stock ROM to determine this would prove difficult.
Someone might take a poke using QPST and other diag tools. I can't currently do so myself.

Hello TS! Do you have an update here?