Hisense C20 dual sim LTE firmware wanted - Upgrading, Modifying and Unlocking

Hi Guys
So my phone started going all wonkey on me, I tried hard resets ect but some issues happen over and over. I contacted Hisense and asked where i can get the firmware but they showed me the middle finger.
I started googling and downloaded about 6 firmware versions and tried all of them, some only shows 1 sim, others show 2 sim but sim 2 is greyed out and not availible.
I need both sims. 1 is used for calls and other data..
Can anyone please help me get the firmware for Hisense KO C20 dual sim LTE ( 3gb rom and 32gb storage )
I have even tried needroms and not even theirs are right
Im in South-africa, but dont mind other roms aslong as i can enable english and dual sim use.
Thanks
Guys :good:

Related

[Q] Insert SIM Card error

Hi friends,
I need your urgent help as my phone is not working.
Phone is not detecting my SIM. Till night it was working fine but in the morning it was laggy so rebooted. After that it is like this
Here's some additional info :
IMEI is there and correct.
WiFi working (posted it through that)
Baseband version is correct.
I reflashed modem too.
I did a clean install of the ROM but still.
Plz advise !
Esp. to @dr.ketan @ravijani @titooo7 @tamirda
Thanks !
Hi friends,
I need your urgent help as my phone is not working.
Phone is not detecting my SIM. Till night it was working fine but in the morning it was laggy so rebooted. After that it is like this
Here's some additional info :
IMEI is there and correct.
WiFi working (posted it through that)
Baseband version is correct.
I reflashed modem too.
I did a clean install of the ROM but still.
Plz advise !
Esp. to @dr.ketan @ravijani @titooo7 @tamirda
Thanks !
Click to expand...
Click to collapse
Hi, did you manage to find a solution for this problem as I have been unable to resolve a similar issue. My sim error appeared randomly on the latest unrooted stock btu build. I have even replaced the sim reader. Any suggestions would be appreciated.
Thanks.
greetings
i had the same issue, quite frustrating.
I bought my Note2 with broken Display, after i repaired it cut my sim to a mico sim, tried it out and got "No Network". So i replaced my 2 Years old Sim with a new micro-sim and with no luck.
After some error diagnostics i found out that the IMEI was broken, well f**. One month later is repaired the IMEI at some Mobile Service-center and the guy demonstrated that the phone now works. Well ok, i was. At Home i inserted my Sim and it didn't worked. I tried my brother Sim cards (2 old Drei Crads) and they worked, now i was like WTF.
Tested Sim-Cards (all Sim mentioned below are from Austrian Carriers)
T-Moblie (2Years old) => ok
A1 (2Yeas old) => ok
3x 3AT (old Sim Design before 2014) => ok
neu 3AT Sim Card since 2014 => NG
I already replaced the sim but with no luck since my carrier gave me the same new Sim Design.
Today i found the issue, the IC or contacts of the new sim are a little bit dipper molded in the plastic. I put a small piece of paper on top of the sim, so the sim is forced down on the simslot contacts, so far i had no issues. I will report this to my carrier and see what thy gonna say.
Hope dat helps, cheers.
FW: Stock 4.1.1 rooted
My samsung note2 N7100 having a problem it keeps asking to insert sim while it shows network and exact time. Whenever i tried to update it failed. Please help me.

sim card.

my vs985 is 1 yr old,rooted,all of a sudden my phone starts this problem with sim card non read..I've kdz,and tot all the way back to 10b,phone works great at10b,then stumproot(xda) and sim cards unreadable,or searching for global reading,it doesn't makeany difference to the setting of global or CDMA etc,after 10 times I still lose sim card when I root,I am on 10b root now however to twrp to jasmine or 47a I lose the sim. I'm staying on 10b root for now as i have no choice,any help is greatly appreciated..
jlb1959.01 said:
my vs985 is 1 yr old,rooted,all of a sudden my phone starts this problem with sim card non read..I've kdz,and tot all the way back to 10b,phone works great at10b,then stumproot(xda) and sim cards unreadable,or searching for global reading,it doesn't makeany difference to the setting of global or CDMA etc,after 10 times I still lose sim card when I root,I am on 10b root now however to twrp to jasmine or 47a I lose the sim. I'm staying on 10b root for now as i have no choice,any help is greatly appreciated..
Click to expand...
Click to collapse
You'll need to flash the 35b bootstack before you flash the ROM for things to work properly on 47a(not sure about jasmine). Read bullet point 5 for a link for the boostack... https://forum.xda-developers.com/ve...t/vs985-46a-stock-flashable-firmware-t3304365
did that.my phone started acting up that my sim was searching for global setting while on 47a for over a year,was giving a suggestion to tot back to stock the start over at 10b,my problem is whether I tot or kdz as soon as I root with stump(from xda site) I get sim non readable and searching for settings.this happens well before I even get to bootstocks,or ROMs.this is while trying to get it rooted on 10b,I've read many people are having a problem with sim cards..obviously tot/kdz gets me to stock with no problem,but trying to get from 10b upgraded is where the sim acts up..
as of now,it works and doesn't work.nothing to do with bootstacks,as I'm on 47a and it didn't work,I rebooted and it did work..then 2hrs later it screwed up again..not sure what it is....
download network settings guru apk and choose bands or *#*#4636#*#*
maybe your problem is something else...
https://forum.xda-developers.com/lg-g3/help/sim-card-t3472164/page3
jlb1959.01 said:
did that.my phone started acting up that my sim was searching for global setting while on 47a for over a year,was giving a suggestion to tot back to stock the start over at 10b,my problem is whether I tot or kdz as soon as I root with stump(from xda site) I get sim non readable and searching for settings...
Click to expand...
Click to collapse
OK...I really need to read more gooder So root is killing your signal somehow. Strange...
Can you grab some logs and post them please? Maybe a log before root when things are working, and one after root with a toggle of airplane mode a couple times to see if it kicks an error into the log and hopefully provide a lil info.
Also, does anything in the "about phone" settings info change after you root/lose service? For ex: unknown baseband, no imei, etc.
yes that's the main problem,I lose ime as well as phone number,and the phone says no sim card,and searching for global setting..if I reboot I may get sim card working but 9 out of 10 times the phone sim is unavailable.example is today,all day the phone worked great,then all of a sudden it lost sim card,no imie,phone number..after pulling battery and rebooting 3 times its working again.I'm on rooted 47a.
+1 For network signal guru, I had to unlock the other bands using that program. It took a few minutes.
It seems that the Verizon variants soft-lock the radio bands.
update this morning,when turning on my phone,it reads sim card searching for global settings,after pulling the battery it reboots and reads sim found,search for settings,global found,and phone works normal??, now if I tot to stock,phone is normal at 10b,then root,twrp etc and sim card will not read,after pulling battery it reads sim searching for global settings,4,5 seconds and phone is OK,then bootstacks,47a and lose sim,then pull battery and go thru the exact same thing,now I've gone to Verizon when sim is unreadable and with a new sim I still get unreadable sim,with no imie,no phone number??...

Possible SIM Unlock from your carrier

Hii to all
Now I have to say something for most users who have bought it
over some carrier on contract like I have done
I asked when I was buying K5 PLUS are all sim slots locked to the provider I bought from?
She checked it for me on paper and said, yes, the phone can only be used with the carrier
SIM cards only and that was for both slots...
Well I was lazy to check when I got home if she was right or wrong...sometimes they do
not have the right information
But today after QFIL and after i Installed the firmware with QFIL
I tried a different carrier sim card in the sim slot 2 and it works
Both cards works
Tested so far..
So, maybe a try for someone locked to some carrier..
Good luck with flashing and just do it exactly step by step all of
you should not have any issues

Slot 2 SIM not registering on network

Hi everybody, I have troubles with slot 2 SIM on a brand new A2 lite.
No mater what I do (swapped SIMs, use only slot 2, with or without SD card) SIM in slot 2 doesn't register on network. Both SIMS work fine in slot 1
Under slot 2 network settings "automatically select network" in ON, turning it OFF causes "Error while searching for networks" message appear
Please help
I use automatic translator to excuse my English. I write from Italy. I have your same problem with global rom. xiaomi italia told me to be a problem of build v9.6.4.0 (check if it matches) and all that remains is a downgrade or wait for update.
SIM 2 not working after upgrade to 9.6.4.0 ?
sacher said:
Hi everybody, I have troubles with slot 2 SIM on a brand new A2 lite.
No mater what I do (swapped SIMs, use only slot 2, with or without SD card) SIM in slot 2 doesn't register on network. Both SIMS work fine in slot 1
Under slot 2 network settings "automatically select network" in ON, turning it OFF causes "Error while searching for networks" message appear
Please help
Click to expand...
Click to collapse
Hi,
me too!
SIM 2 recognized (asks PIN) but not registering on networks .
I bought phone on a retail store (in Italy) a few days ago, so I was able to get it fast replaced with a new one, now working on both SIMs
Today I've discovered that this is probably due to a bug in V9.6.4.0.ODLMIFF upgrade
Former phone was upgraded to V9.6.4.0 via OTA.
The second one has yet stock retail ROM V9.6.2.0.ODLMIFF, and until this nasty bug will be fixed I beware to upgrade system, maintaining out-of-the-box version.
BTW: to date, I wasn't able to find a a 9.6.2.0 image to archive for safety , and eventually recovering.
Does anyone has a link to download it ?
Best regards
So, no way to get a V9.6.2.0 somewhere?
thanks
Still no fix?
I am in Portugal and both I've tested both slots with a sim card and both register my network (meo) in both 9.6.4.0 and now 9.6.6.0 maybe its the Italy network only?
LUNARIO said:
I am in Portugal and both I've tested both slots with a sim card and both register my network (meo) in both 9.6.4.0 and now 9.6.6.0 maybe its the Italy network only?
Click to expand...
Click to collapse
Yes, only in Italy ...
I have the same problem.
I've made the update to 9.6.8.0 (september) without any changes, send an email at the italian support (i'm italian) and they answer me that there isn't solution, for the moment.
I'm so angry for this problem and think that xiaomi not intend to solve it.
I made some other test without the Sim on the Slot 2: the phone has problems to connect on 4G (Tim) where generally connect, if i use 3G it doesn't connect on internet and the sub menĂ¹ APN desappears.
I've also another problem, I can't connect to a mac or pc with usb cable.
MI A2 Lite SIM 2 not registered
robiox said:
I have the same problem.
I've made the update to 9.6.8.0 (september) without any changes, send an email at the italian support (i'm italian) and they answer me that there isn't solution, for the moment.
I'm so angry for this problem and think that xiaomi not intend to solve it.
I made some other test without the Sim on the Slot 2: the phone has problems to connect on 4G (Tim) where generally connect, if i use 3G it doesn't connect on internet and the sub menĂ¹ APN desappears.
I've also another problem, I can't connect to a mac or pc with usb cable.
Click to expand...
Click to collapse
Hello.
To everybody suffered the SIM 2 not registered / not working (slot) on MI A2 Lite (specially in Italy) it seems that new "November 2018" system update solved it. So, please try to download/apply for update. Sometimes, after update, a "remove/re-insert SIM" is needed.
Good luck.
FINALLY !!!
Problem on sim 2 is solved with November patch !!!
You have to completely switch off the phone and then switch it on again after installing the patch.
bye
My phone miA2 Lite is unable to register sim 1 on the network. ..what could be the problem

Enable eSIM SM-G981W?

I bought a Canadian variant Samsung Galaxy S20 (Snapdragon) yesterday, and knew that the SIM reader slot was faulty and needed to be replaced. I had assumed that I could just use eSIM, but didn't realize that the Canadian variants have it blocked.
Any advice on how to enable it? Can I maybe flash international firmware onto it to have the SIM card manager and enabling of eSIM, and if so, which one and how? Using Odin? Or a modified Odin? Do I need a working SIM reader?
Or maybe I change the CSC? If so, any instructions on how to do it with my variant?
Or do I need to root? If so, any instructions on how to unlock the bootloader (I don't have the OEM unlock option in Developer Options) if I am on One UI version 4.1? Or do I need to downgrade? If so, how do I downgrade?
I really don't want to have to tear this phone apart and resolder on a new SIM reader slot. It's a really great phone and the nicest one I've owned.
I'm not sure where to start.
threehappypenguins said:
I bought a Canadian variant Samsung Galaxy S20 (Snapdragon) yesterday, and knew that the SIM reader slot was faulty and needed to be replaced. I had assumed that I could just use eSIM, but didn't realize that the Canadian variants have it blocked.
Any advice on how to enable it? Can I maybe flash international firmware onto it to have the SIM card manager and enabling of eSIM, and if so, which one and how? Using Odin? Or a modified Odin? Do I need a working SIM reader?
Or maybe I change the CSC? If so, any instructions on how to do it with my variant?
Or do I need to root? If so, any instructions on how to unlock the bootloader (I don't have the OEM unlock option in Developer Options) if I am on One UI version 4.1? Or do I need to downgrade? If so, how do I downgrade?
I really don't want to have to tear this phone apart and resolder on a new SIM reader slot. It's a really great phone and the nicest one I've owned.
I'm not sure where to start.
Click to expand...
Click to collapse
I'm in the same boat as you are! Did you manage to get e-sim to work?
Anyone have any luck with this?
I would like to help. You can flash a SM-G981U1 XAA with odin to unlock it. if you need nr sa , contact me to get it in free
Littlenine said:
I would like to help. You can flash a SM-G981U1 XAA with odin to unlock it. if you need nr sa , contact me to get it in free
Click to expand...
Click to collapse
SM-G981U1 XAA seems to be still on Android 12. I'll wait until 13 is ready before I attempt. What is "nr sa"? Thanks.
recordman said:
SM-G981U1 XAA seems to be still on Android 12. I'll wait until 13 is ready before I attempt. What is "nr sa"? Thanks.
Click to expand...
Click to collapse
NR SA is 5g. i can make your phone enable esim and the same time support oneui5.0 + OTA + 5g SA
Littlenine said:
NR SA is 5g. i can make your phone enable esim and the same time support oneui5.0 + OTA + 5g SA
Click to expand...
Click to collapse
Is this information available in the public, or only select people like yourself have the secret sauce?
recordman said:
Is this information available in the public, or only select people like yourself have the secret sauce?
Click to expand...
Click to collapse
actually i write a passage to show how to do this and send it in a chinese community called coolapk
@Littlenine can you share how? I had to revert to u1 firmware for esim which does not support android 13 / ui5
kmare said:
@Littlenine can you share how? I had to revert to u1 firmware for esim which does not support android 13 / ui5
Click to expand...
Click to collapse
i will
I read that if the W model is flashed with the U1 firmware, Samsung Pay can no longer have Canadian credit cards added. Can someone verify? OneUI 5.1 is being tested on the S20. We can only hope Samsung enables eSIM for that release.
W model has 13 release now. Does it still not support esim?
I was on the U1 model Android 12 in Dec 2022 (With esim enabled) and updated to the W model Android 13 firmware figuring it should have esim enabled however it did not.
I used odin to switch to the Android 13 U1 firmware but it did not enable esim (I used the home_csc). I flashed the older U1 Android 12 firmware which did enable esim again but I had to factory reset the phone due to a boot loop.
After reseting and doing an OTA update to Android 13 the esim stayed enabled and I restored a backup using smart switch for my apps and settings.
maydax said:
I was on the U1 model Android 12 in Dec 2022 (With esim enabled) and updated to the W model Android 13 firmware figuring it should have esim enabled however it did not.
I used odin to switch to the Android 13 U1 firmware but it did not enable esim (I used the home_csc). I flashed the older U1 Android 12 firmware which did enable esim again but I had to factory reset the phone due to a boot loop.
After reseting and doing an OTA update to Android 13 the esim stayed enabled and I restored a backup using smart switch for my apps and settings.
Click to expand...
Click to collapse
So in summary, to get eSIM in A13 U1, first odin install A12 U1, and then OTA to A13? The A13 U1 was uploaded yesterday ( link ).
recordman said:
So in summary, to get eSIM in A13 U1, first odin install A12 U1, and then OTA to A13? The A13 U1 was uploaded yesterday ( link ).
Click to expand...
Click to collapse
It may work if you use csc instead of home_csc which would reset the phone straight out. I used home_csc which kept my Canadian firmware settings and likely csc
maydax said:
It may work if you use csc instead of home_csc which would reset the phone straight out. I used home_csc which kept my Canadian firmware settings and likely csc
Click to expand...
Click to collapse
Does Samsung Pay work with Canadian credit cards in your A13 U1? That's the only requirement holding me back from converting. Samsung Pay+Google Wallet cover 90% of the places I regularly shop at.
recordman said:
Does Samsung Pay work with Canadian credit cards in your A13 U1? That's the only requirement holding me back from converting. Samsung Pay+Google Wallet cover 90% of the places I regularly shop at.
Click to expand...
Click to collapse
I only use google wallet so I never tried samsung pay before. I installed samsung wallet and seems it wants a us zip code.
Ok guys so i bought Samsung Galaxy S22+ in Korea. I am from Europe. Reason why i bought phone in Korea was it was like 20% cheaper then in EU + it have Snapdragon instead Exynos.
But as i came back home i was in for a suprise, coz i tried to set up dual sim for the phone, but then i realized i cant do it. SIM card tray where u put physical SIM cards have only 1 SLOT, 2nd slot that was supposed to be on the back side is slighty modified so SIM card cant fit in, also there is no writing SIM2 like its written on fron (SIM1).
Also phone doesnt have support for eSIM, i cant open SIM manager or anything related to SIM cards in settings of my phone.
Dual SIM is important for me coz i use 1 SIM for SMS and phonecalls, its my number, and 2nd SIM is for internet. We are able to buy internet SIM here that have 60GB of data per month and its super cheap, like 7 EURO, so running dual SIM is super cheap version. If i buy internet via my regular phone providers where i can use phonecalls and SMS combined, it cost like 3x more.
SO yeah, i mean i could go for more expensive version and just have 1 SIM but its stupid coz 1 of reasons was i bought that phone is to run it DUAL SIM, i have also my old Huawei P30 pro working just fine, and now i feel dumb for buying another new phone that was meant to replace my old and its not working 100% correctly...
Can i modify my phone to make it work? Install EU version of Android or something? I would rly like to make it work, although even if i make it work i am not sure if my Internet/Phone service provider support eSIM so i swap this main physical sim with eSIM and then use internet one as physical. But ill deal with this later. I just wanna try enable eSIM first if its possible and have dual sim support in my settings.
Any help is very appreciated!
Best regards!
bjBlazkowicz said:
Ok guys so i bought Samsung Galaxy S22+ in Korea. I am from Europe. Reason why i bought phone in Korea was it was like 20% cheaper then in EU + it have Snapdragon instead Exynos.
But as i came back home i was in for a suprise, coz i tried to set up dual sim for the phone, but then i realized i cant do it. SIM card tray where u put physical SIM cards have only 1 SLOT, 2nd slot that was supposed to be on the back side is slighty modified so SIM card cant fit in, also there is no writing SIM2 like its written on fron (SIM1).
Also phone doesnt have support for eSIM, i cant open SIM manager or anything related to SIM cards in settings of my phone.
Dual SIM is important for me coz i use 1 SIM for SMS and phonecalls, its my number, and 2nd SIM is for internet. We are able to buy internet SIM here that have 60GB of data per month and its super cheap, like 7 EURO, so running dual SIM is super cheap version. If i buy internet via my regular phone providers where i can use phonecalls and SMS combined, it cost like 3x more.
SO yeah, i mean i could go for more expensive version and just have 1 SIM but its stupid coz 1 of reasons was i bought that phone is to run it DUAL SIM, i have also my old Huawei P30 pro working just fine, and now i feel dumb for buying another new phone that was meant to replace my old and its not working 100% correctly...
Can i modify my phone to make it work? Install EU version of Android or something? I would rly like to make it work, although even if i make it work i am not sure if my Internet/Phone service provider support eSIM so i swap this main physical sim with eSIM and then use internet one as physical. But ill deal with this later. I just wanna try enable eSIM first if its possible and have dual sim support in my settings.
Any help is very appreciated!
Best regards!
Click to expand...
Click to collapse
Actuall you can't In china we have all kinds of versions of samsung phone ,which korean version only has singal sim,dual physical sim only supportes on China and european while physical +esim supported on US and canada
maydax said:
I only use google wallet so I never tried samsung pay before. I installed samsung wallet and seems it wants a us zip code.
Click to expand...
Click to collapse
Someone tried to add Canadian CC to a USA model of an S21 and it worked with a trick. Check here

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