I have a Galaxy Nexus on SKT here in Korea (not sure how many of you out there are in Korea), but I'm not entirely sure if my phone is carrier locked or not.
I put an old Verizon/Vodafone SIM and KT (another Korean carrier) SIM in the phone, and for about 5 seconds it shows the carrier name, but suddenly goes to "Emergency Calls Only".
I've been reading that for people who are SIM locked, they are asked for an unlock code but putting in either SIM cards did not ask me for that. Does anyone else have this issue when putting in other SIM cards?
No one else here in Korea or can shed some light?
They use WCDMA here, but I know it has the GSM radios in it as well. Could that be a reason I don't get prompted for an unlock code when inserting another SIM?
I have been using search/Google to look for these answers, but I am seeing conflicting information. Can anyone help?
I purchased a T-Mobile Note 3 that had previously been activated on the T-Mobile network. The phone is clean and can be activated. I am going to be placing it on the AT&T network (Cricket actually). I have the SIM Unlock code. I do not intend to use the phone internationally.
I do not have :
My Cricket SIM. I am in the process of changing from Page Plus to Cricket, so my number has not been transferred yet.
An active T-Mobile SIM.
I DO have some random, currently inactive SIM card from Sprint (I know this phone wont work on Sprint, I dont want it on Sprint, its just what I have at hand).
When I place the random Sprint SIM in the phone I am prompted for the unlock code. I have not attempted to enter the code, just wanted to see if it would generate the promp.
Since this phone was previously activated on T-Mobile, do I need to put a currently good T-Mobile SIM card in it to get the unlock code to work properly?
If so, can I buy a BYOD T-Mobile SIM card from Target, leave it inactivated, and use that to unlock?
Can I use an unactivated Cricket SIM to generate the Unlock message and unlock it from there?
What will the behavior be if I unlock it using the Sprint SIM?
I have been using the search to get an answer to this question, but there seem to be some conflicting reports here.
If the sim card is other than t-mobile, you will get unlock prompt. You can enter the unlock code but if you use cdma sim cards mostly you will not get signal. I am not sure if the t-mobile note 3 is cdma compatible. But sprint note 3 has both cdma and gsm.
No, you don't need a T-Mobile Sim, active or otherwise.
Since the phone is a native T-Mobile phone and you wish to UNLOCK it, simply place a Sim card from any carrier (active or not) into the phone and boot it up. As you have discovered it will prompt for an unlock code. Enter the code you paid for and you're done, that's it.
Once you receive the cricket Sim you can simply insert it and continue to use the phone.
For the above please make sure the phone is completely stock, otherwise issues will arise
I would like to buy the Indian version of dual sim variant Note 7 ,what exactly are the differences between dual sim version and USA Att version ?
Does the dual sim version supports Samsung pay and other network features just like the ATT version?
Does it support Dual GSM ? will it support ATT and Verizon simultaneously ?
Thanks Guys appreciate your response.
Can't answer all of your questions but as far as I know:
Dual sim versions allow 2 sims (think 2 carriers/phone #'s) at once.
Single sim version only one sim 1 phone#.
All Sim version phones are GSM but not all versions have all frequencies.
for instance the 930F is missing one or 2 frequencies that AT&T uses. Also it's missing VoLte. It's would still be usable in most areas but there will be spots that service might suffer.
As for Verizon not sure if they even use sim cards at all. so can't answer.
Sent from my SM-N920I on XDA-DEVELOPERS Mobile app.
I'm having trouble finding out what type of dual SIM technology the 7T uses. Is it DSFA of DSDS? Will either one allow me to take a call from two different carriers at any time? FYI I'll be using Verizon and AT&T.
OP has always 'only' DSDS. So you can only make one call with one card at the same time.
The other card is disabled during this call.
Thank you for the info. If I am currently not on a phone call, the phone being idle, are both Sims able to receive a call at anytime?
yes, of course.
RobM87 said:
I'm having trouble finding out what type of dual SIM technology the 7T uses. Is it DSFA of DSDS? Will either one allow me to take a call from two different carriers at any time? FYI I'll be using Verizon and AT&T.
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Click to collapse
Dual SIM technology? I'm on the T-Mobile variant. I'm confused.
Sent from my [device_name] using XDA-Developers Legacy app
DSDS = Dual sim, dual standby, where you have two sims from two different carriers. When one SIM is active on a call the second goes idle. DSFA = Dual sim full standby, even if one sim is active on a call the other continues to function, although I am not certain of the mechanics of how a user handles two calls at once.
These are very popular with frequent international travelers, or when someone has a company phone and a personal phone but doesn't want to carry two devices. They really haven't caught on in the US because carriers for the most part have similar coverage and don't sell them. The carriers don't want their customers to be customers of other carriers too.
Imagine living in Belgium but frequently traveling to the UK and needing to use a mobile phone in both places. The roaming fees and long distance charges would be outrageous. With a dual sim phone a user could have a Belgium sim card and a UK sim card and be able to use the appropriate sim as needed without having to place the wear and tear on the phone doing sim swaps.
I have tried to find a dual sim phone which functions well in the US. I have a dual sim S9 from the UAE market, but for some reason the data is very slow compared to a single sim S9 for the US market. I also tried a Sonim XP8 which worked well enough until the phone figured out it was in the US and disabled the second sim slot. Apparently Sonim does not want the XP8 to function as a dual sim phone in the US.
T-Mobile has disabled the second sim card slot in the 7t, for whatever reason. I have a 7t coming from direct from the manufacturer and I am excited to see how well it works as a dual sim phone. I have a line on TMO and a line on AT&T, and I don't want to carry two devices if I don't have to.
rjglenn said:
DSDS = Dual sim, dual standby, where you have two sims from two different carriers. When one SIM is active on a call the second goes idle. DSFA = Dual sim full standby, even if one sim is active on a call the other continues to function, although I am not certain of the mechanics of how a user handles two calls at once.
These are very popular with frequent international travelers, or when someone has a company phone and a personal phone but doesn't want to carry two devices. They really haven't caught on in the US because carriers for the most part have similar coverage and don't sell them. The carriers don't want their customers to be customers of other carriers too.
Imagine living in Belgium but frequently traveling to the UK and needing to use a mobile phone in both places. The roaming fees and long distance charges would be outrageous. With a dual sim phone a user could have a Belgium sim card and a UK sim card and be able to use the appropriate sim as needed without having to place the wear and tear on the phone doing sim swaps.
I have tried to find a dual sim phone which functions well in the US. I have a dual sim S9 from the UAE market, but for some reason the data is very slow compared to a single sim S9 for the US market. I also tried a Sonim XP8 which worked well enough until the phone figured out it was in the US and disabled the second sim slot. Apparently Sonim does not want the XP8 to function as a dual sim phone in the US.
T-Mobile has disabled the second sim card slot in the 7t, for whatever reason. I have a 7t coming from direct from the manufacturer and I am excited to see how well it works as a dual sim phone. I have a line on TMO and a line on AT&T, and I don't want to carry two devices if I don't have to.
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Click to collapse
I had no idea. So if I but a dual SIM card tray and flash the international version software on my T-Mobile variant I should be able to have dual SIM functionality?
Sent from my [device_name] using XDA-Developers Legacy app
OuncE718 said:
I had no idea. So if I but a dual SIM card tray and flash the international version software on my T-Mobile variant I should be able to have dual SIM functionality?
Sent from my [device_name] using XDA-Developers Legacy app
Click to expand...
Click to collapse
This has been done on other model phones and should be the same with this one. It was the same price point for me so I just cut TMO out of the deal. Just be careful flashing other firmware, if you are a TMO customer you wouldn't want to loose Band 71.
Like title says, can I put a dual sim tray in my 9 pro north american LE2125 to get dual sim?
as far as i know, only the telekom model (le2127) is not a dual sim device
jamescable said:
Like title says, can I put a dual sim tray in my 9 pro north american LE2125 to get dual sim?
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Click to collapse
Hi, I have an dual sim card tray in my unlocked NA model, the same model you are referring to. i bought it (dual sim tray)off of Amazon from a link someone posted quite a while back when android 12 was first coming out. There was a thread here with the info at the time. I haven't ever got to use the other sim because at the time they had a few uncertainties. I'm still on a android 11 based custom ROM.
jamescable said:
Like title says, can I put a dual sim tray in my 9 pro north american LE2125 to get dual sim?
Click to expand...
Click to collapse
But its already dual
Mr Hassan said:
But its already dual
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Click to collapse
It is? Strange, my sim tray is only a single sim, my ROMs only show 1 sim number. And yes, my phone model IS LE2125 and not the T-Mobile version. I have used the LE2125 msm numerous times and global OOS and never had issues with modem/base bands and stuff so my model is the north american global unlocked
jamescable said:
It is? Strange, my sim tray is only a single sim, my ROMs only show 1 sim number. And yes, my phone model IS LE2125 and not the T-Mobile version. I have used the LE2125 msm numerous times and global OOS and never had issues with modem/base bands and stuff so my model is the north american global unlocked
Click to expand...
Click to collapse
is your device perhaps a telecom device (telecom devices are only single sim) which has been flashed to a global device?
ChrisFeiveel84 said:
is your device perhaps a telecom device (telecom devices are only single sim) which has been flashed to a global device?
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Click to collapse
No, even if it WAS flashed to global, I would have to use the T-Mobile msm, which I don't need or use. Also, don't have radio issues using custom ROMs like T-Mobile users have.
ChrisFeiveel84 said:
as far as i know, only the telekom model (le2127) is not a dual sim device
Click to expand...
Click to collapse
No, LE2115 and LE2125 are both single SIM. In fact the T-Mobile LE2127 is a dual SIM device, one of the reasons people were buying it, but it's totally unstable, as it ships with a single SIM tray and the second is disabled.
I received a couple days ago from Amazon my order for OnePlus 9 Pro 5G LE2123 Dual SIM 12GB+256GB EU/UK Model Global ROM Factory Unlocked International Version. After setting it up and done migrating all my files from my OnePlus 8 Pro Model IN 2025 Dual Sim, I am surprised to see that the item I received is the Model LE2125 which is confirmed Dual Sim.
My previous research all said that Model LE2125 is only Single SIM, but here is my newly delivered Model LE2125 and it is indeed Dual SIM and both SIM cards are confirmed working. Can anyone enlighten or confirm that LE2125 is actually not Single SIM?
My primary TMobile card on Sim 1 is working fine and picking up 5G, while my secondary international roaming card on Sim 2 is also working.
Your feedback and input will be appreciated. Thank you much.
badfinger said:
I received a couple days ago from Amazon my order for OnePlus 9 Pro 5G LE2123 Dual SIM 12GB+256GB EU/UK Model Global ROM Factory Unlocked International Version. After setting it up and done migrating all my files from my OnePlus 8 Pro Model IN 2025 Dual Sim, I am surprised to see that the item I received is the Model LE2125 which is confirmed Dual Sim.
My previous research all said that Model LE2125 is only Single SIM, but here is my newly delivered Model LE2125 and it is indeed Dual SIM and both SIM cards are confirmed working. Can anyone enlighten or confirm that LE2125 is actually not Single SIM?
My primary TMobile card on Sim 1 is working fine and picking up 5G, while my secondary international roaming card on Sim 2 is also working.
Your feedback and input will be appreciated. Thank you much.
Click to expand...
Click to collapse
So, LE2125 is single sim ONLY. I know because I bought a dual sim tray and put 2 active T-Mobile sims in it and only 1 showed up.
But mine is LE2125 and I was surprised to see that it is in fact DUAL SIM, with dual sim tray and both sim cards are working (I put in my primary US T-Mobile sim in tray 1 and my international roaming sim card in tray 2). I bought the device from Amazon Marketplace used or refurbished.
Please see the 3 screenshots I posted showing the ModeLE2125 with 2 Sims and 2 IMEIs in device settings.
badfinger said:
But mine is LE2125 and I was surprised to see that it is in fact DUAL SIM, with dual sim tray and both sim cards are working (I put in my primary US T-Mobile sim in tray 1 and my international roaming sim card in tray 2). I bought the device from Amazon Marketplace used or refurbished.
Please see the 3 screenshots I posted showing the ModeLE2125 with 2 Sims and 2 IMEIs in device settings.
Click to expand...
Click to collapse
I think your software may be LE2125 but its either T-Mobile hardware or EU hardware.
Thank you for your kind observation. But all I can say is that this LE2125 is DUAL SIM with dual sim tray with 2 sim cards working (even my international roaming sim card on sim 2 receives my multiple test sms mesages sent from my US Tmobile number). So, as a hardware this LE2125 is working fine. As far as its sotware is concerned, it's already beyond me how it got into the device.
Thank you anyway for your input.
badfinger said:
Thank you for your kind observation. But all I can say is that this LE2125 is DUAL SIM with dual sim tray with 2 sim cards working (even my international roaming sim card on sim 2 receives my multiple test sms mesages sent from my US Tmobile number). So, as a hardware this LE2125 is working fine. As far as its hardware is concerned, it's already beyond me how it got into the device.
Thank you anyway for your input.
Click to expand...
Click to collapse
What I am meaning is, you phone might actually be LE2123 or LE2127 with north American OOS showing LE2125. Software is not hardware specific. Some ROMs will change your model number
Thank you so much for this info, that software is not hardware specific. This info is very new to me as I thought all along that frequency bands on a device is dictated by the physical hardware itself and not assigned via mere software configuration.
badfinger said:
Thank you so much for this info, that software is not hardware specific. This info is very new to me as I thought all along that frequency bands on a device is dictated by the physical hardware itself and not assigned via mere software configuration.
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Click to collapse
It's not the bands that are being spoken of, it's the hardware model shown in the settings. If you have a full conversion device, it's possible to convert from, say, LE2127 T-Mobile to show LE2125 US unlocked instead.
This is likely what happened because T-Mobile devices sell for cheap because nobody wants to deal with the headaches from them.
Thank you for this valuable information. I thought specific device models made for let's say, Europe, China, US have the radio hardware baked in with specific 5G or 4G LTE bands that work in specific regional markets.
badfinger said:
Thank you for this valuable information. I thought specific device models made for let's say, Europe, China, US have the radio hardware baked in with specific 5G or 4G LTE bands that work in specific regional markets.
Click to expand...
Click to collapse
They DO have this. Changing your model number with software won't change the bands that are supported, it just can change the model number (which is incredibly stupid as it makes it easy for people to sell a phone as something that it's not).
Wow, thank you again. Yes, it looks like it borders on deceitful practice although it is not illegal.
if u wanna be absolutely sure which model u're getting, check the IMEI number against online database.
it will show u exact model.
https://swappa.com/imei
I have LE2125, & i can confirm that it's a single sim device.
though i always if there's any way to make dual sim work in this model.