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Based on what I read so far, only unlocked version of AT&T will work only with GSM provider. Would like confirmation of this. Thanks!
jklny said:
Based on what I read so far, only unlocked version of AT&T will work only with GSM provider. Would like confirmation of this. Thanks!
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No, unfortunately.
Sent from my SM-G935U using Tapatalk
Uh... If it's an unlocked phone there is no reason it wont.
http://www.droid-life.com/2017/03/08/unlocked-galaxy-s8-plus-s8-fcc-smg950-smg955/
Optimumind... can you provide any explanation for your answer?
Unless something has changed, Sprint is CDMA, not GSM.
eatmeimadanish said:
Uh... If it's an unlocked phone there is no reason it wont.
http://www.droid-life.com/2017/03/08/unlocked-galaxy-s8-plus-s8-fcc-smg950-smg955/
Optimumind... can you provide any explanation for your answer?
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An unlocked AT&T GS8 will work on other GSM networks but not on Sprint b/c Sprint won't add the AT&T GS8 IMEI to their system.
Sent from my SM-G935U using Tapatalk
The hardware on all the s8's are the same so technically it will work but the imei isn't white listed so you won't be able to activate it on sprint but the sprint version can be activated on att or any other gsm provider.
Sprint galaxy s8 works with tmobile and verizon
The hardware on all the s8's are the same so technically it will work but the imei isn't white listed so you won't be able to activate it on sprint but the sprint version can be activated on att or any other gsm provider.
Hey there. I have an S7 Edge unlock from t-mobile running the unlock firmware from G935U. Sprint SIM cards are lock, I have a friend who works for sprint. I have 3 Sprint S8 and S8+, 2 unlock and running on T-Mobile network. I took 1 of the SIM card and put in my Unlock S7 Edge, the phone just keep trying to connect to network and repeating the same process. Didn't work at all, but the Sprint S8's works excellent on T-Mobile network after flashing the UNLOCK firmware.
---------- Post added at 03:01 AM ---------- Previous post was at 02:53 AM ----------
I got 111.71 mbps download, 20 mbps upload speed from my Unlock Sprint S8+ running G955U1 unlock firmware on T-Mobile network. Couldn't ask for anything more than that.
I will provide my non Sprint S8 variant experience.....for any US S8, they all have the same hardware. I have noticed that ATT and TMO models have CDMA hardware, but are turned off in the carriers version of the firmware . Flashing the stock unlocked S8 firmware or the Sprint/VZW FW will enable the phones for use with CDMA and all LTE bands. I had an ATT version sim unlocked and attempted this on Verizon FW with a VZW sim and it worked perfect....but there is a major roadblock with Sprint. Sprint is the only carrier that I have tried that requires an update of the IMEI to the account (ie you cant just pop a sim in and the device works). VZW for example shows Unknown device on the account instead of an S8, but all the services still work. Sprint shows 3G for about 5 minutes, then you get a message that the sim is locked and to reboot or call support (not the same as the phones sim slot being locked, but more that the system cant register the sim/device combo). Sprint stores have the capability of adding IMEI's to the Sprint database, as long as the IMEI does not come back as ineligible. Well, I took the S8 to several stores and none of them could add it to the system. Several employees advised me that the IMEI's from other carrier's are blacklisted so that it can not be added and the only ones that the system would allow to add are IMEI's that were sold as unlocked or Sprint branded. If the IMEI can be white listed, then I am certain it would work.
mellojosh said:
I will provide my non Sprint S8 variant experience.....for any US S8, they all have the same hardware. I have noticed that ATT and TMO models have CDMA hardware, but are turned off in the carriers version of the firmware . Flashing the stock unlocked S8 firmware or the Sprint/VZW FW will enable the phones for use with CDMA and all LTE bands. I had an ATT version sim unlocked and attempted this on Verizon FW with a VZW sim and it worked perfect....but there is a major roadblock with Sprint. Sprint is the only carrier that I have tried that requires an update of the IMEI to the account (ie you cant just pop a sim in and the device works). VZW for example shows Unknown device on the account instead of an S8, but all the services still work. Sprint shows 3G for about 5 minutes, then you get a message that the sim is locked and to reboot or call support (not the same as the phones sim slot being locked, but more that the system cant register the sim/device combo). Sprint stores have the capability of adding IMEI's to the Sprint database, as long as the IMEI does not come back as ineligible. Well, I took the S8 to several stores and none of them could add it to the system. Several employees advised me that the IMEI's from other carrier's are blacklisted so that it can not be added and the only ones that the system would allow to add are IMEI's that were sold as unlocked or Sprint branded. If the IMEI can be white listed, then I am certain it would work.
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Yup, Sprint sucks very well in this regard.
Sent from my SM-G955U1 using Tapatalk
This phones are listed among eligible phones for Sprint's BYOD 1 year free plan. Does it say something?
Samsung Galaxy S8 (Verizon, AT&T and T-Mobile)
Samsung Galaxy S8+ (Verizon, AT&T and T-Mobile)
Yes it will work, i put a freedom pop sim in, and it restarted with at&t logo
mellojosh said:
I will provide my non Sprint S8 variant experience.....for any US S8, they all have the same hardware. I have noticed that ATT and TMO models have CDMA hardware, but are turned off in the carriers version of the firmware . Flashing the stock unlocked S8 firmware or the Sprint/VZW FW will enable the phones for use with CDMA and all LTE bands. I had an ATT version sim unlocked and attempted this on Verizon FW with a VZW sim and it worked perfect....but there is a major roadblock with Sprint. Sprint is the only carrier that I have tried that requires an update of the IMEI to the account (ie you cant just pop a sim in and the device works). VZW for example shows Unknown device on the account instead of an S8, but all the services still work. Sprint shows 3G for about 5 minutes, then you get a message that the sim is locked and to reboot or call support (not the same as the phones sim slot being locked, but more that the system cant register the sim/device combo). Sprint stores have the capability of adding IMEI's to the Sprint database, as long as the IMEI does not come back as ineligible. Well, I took the S8 to several stores and none of them could add it to the system. Several employees advised me that the IMEI's from other carrier's are blacklisted so that it can not be added and the only ones that the system would allow to add are IMEI's that were sold as unlocked or Sprint branded. If the IMEI can be white listed, then I am certain it would work.
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I had a similar experience with an Unlocked Galaxy S7 and Sprint. I actually had to get Samsung Tech support on a conference call with a Sprint Manager, because Sprint told my customer the the phone is incompatible with the Sprint network. After embarrassing the Sprint rep, he white listed the IMEI number on Sprint's network and the phone worked.
Also, MetroPCS has the same policy. You cannot just pop in a Metro Sim card. You have to call them and register the IMEI number. After about an hour tops, the phone will complete provisioning and be able to work on Metro's T-Mobile network.
T-Mobile is instant. You cab pop a T-Mobile Sim card into any sim unlocked variant and it will work. However you will need to go into settings and follow the T-Mobile instructions on how to set up the radio frequencies. The better way is to just flash the carrier's ROM version onto the phone. This way you will get the features and updates from the carrier. Carriers seem to get the Android updates faster than Samsung. A trade off for bloatware.
tempests said:
I had a similar experience with an Unlocked Galaxy S7 and Sprint. I actually had to get Samsung Tech support on a conference call with a Sprint Manager, because Sprint told my customer the the phone is incompatible with the Sprint network. After embarrassing the Sprint rep, he white listed the IMEI number on Sprint's network and the phone worked.
Also, MetroPCS has the same policy. You cannot just pop in a Metro Sim card. You have to call them and register the IMEI number. After about an hour tops, the phone will complete provisioning and be able to work on Metro's T-Mobile network.
T-Mobile is instant. You cab pop a T-Mobile Sim card into any sim unlocked variant and it will work. However you will need to go into settings and follow the T-Mobile instructions on how to set up the radio frequencies. The better way is to just flash the carrier's ROM version onto the phone. This way you will get the features and updates from the carrier. Carriers seem to get the Android updates faster than Samsung. A trade off for bloatware.
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Maybe I should try this approach with my Galaxy S9+ (AT&T, unlocked).
Sprint is a PITA.
tempests said:
I had a similar experience with an Unlocked Galaxy S7 and Sprint. I actually had to get Samsung Tech support on a conference call with a Sprint Manager, because Sprint told my customer the the phone is incompatible with the Sprint network. After embarrassing the Sprint rep, he white listed the IMEI number on Sprint's network and the phone worked.
Also, MetroPCS has the same policy. You cannot just pop in a Metro Sim card. You have to call them and register the IMEI number. After about an hour tops, the phone will complete provisioning and be able to work on Metro's T-Mobile network.
T-Mobile is instant. You cab pop a T-Mobile Sim card into any sim unlocked variant and it will work. However you will need to go into settings and follow the T-Mobile instructions on how to set up the radio frequencies. The better way is to just flash the carrier's ROM version onto the phone. This way you will get the features and updates from the carrier. Carriers seem to get the Android updates faster than Samsung. A trade off for bloatware.
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You may have been referring to me regarding the unlocked Galaxy S7 & Sprint. Many thanks for that one. I'm going through the same crap now with Universal unlocked IPhone 7. Sprint is a PITA!
I can confirm the SM-G955U from AT&T does work. I confirmed this via Sprint site. Just Google Sprint byod eligibility and you'll find the link.
My biggest roadblock was AT&T had a network lock on my phone so the sim Sprint sent couldn't be used. I then used the services provided by gsmzambia to network unlock the device. It's currently working on Sprint network.
Are those places (sites) that you pay to unlock your phone legit? Is it possible to unlock the Verizon version of the G6 so I can use it on T-Mobile or does the Verizon G6 not have the proper bands support?
Gasaraki- said:
Are those places (sites) that you pay to unlock your phone legit? Is it possible to unlock the Verizon version of the G6 so I can use it on T-Mobile or does the Verizon G6 not have the proper bands support?
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Verizon doesn't lock their LTE phones. You should be able to drop a SIM card in it and have it work.
I don't know about all the LTE bands though.
I'm on Verizon. Seems everyone I had would work on most carriers out of the box. I had S7 Edge (Verizon) worked on a few different prepaid Sims. I also added a new phone for me and put a dif sim in my old LG Stylus and sent to my son in Boise. And put old sim in my LG G6 and it worked (cause I needed old number in new phone and new SIM went in older phone.
Hopefully that made since haha.
Just remember that the phone/SIM must be in good standing or you will have problems sometimes when activating on major companies. Unless its prepaid SIM you can pop a new one in that's already activated.
justqt said:
I'm on Verizon. Seems everyone I had would work on most carriers out of the box. I had S7 Edge (Verizon) worked on a few different prepaid Sims. I also added a new phone for me and put a dif sim in my old LG Stylus and sent to my son in Boise. And put old sim in my LG G6 and it worked (cause I needed old number in new phone and new SIM went in older phone.
Hopefully that made since haha.
Just remember that the phone/SIM must be in good standing or you will have problems sometimes when activating on major companies. Unless its prepaid SIM you can pop a new one in that's already activated.
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I'll have a chance to buy new Verizon LG G6 for cheap, but I'm on AT&T network. Just want to confirm before pull the trigger, do I need a Verizon SIM to activate the phone first then swap with AT&T SIM, or just put in the AT&T SIM would be fine? Thanks in advance!
Put the att sim in, during setup connect to WiFi. After setup input apn settings. Restart the phone. The phone may occasionally inform you that the inserted sim is not a VZW sim. I think that will go away after you disable all the VZW apps.
I have tried different sims but does not recognize the sim. Only recognizes verizon sim. I'm not a verizon customer and where I am at we don't have verzion.
any suggestions will be greatly appreciated.
Update: Working now. Sim card readers were bent.
sinkoo1979 said:
I have tried different sims but does not recognize the sim. Only recognizes verizon sim. I'm not a verizon customer and where I am at we don't have verzion.
any suggestions will be greatly appreciated.
Update: Working now. Sim card readers were bent.
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Thinking of switching from a tmo baby carrier to one on ATT. What are the highest speed bands you able to get ... LTE, HSPA...?
jayinc11 said:
Thinking of switching from a tmo baby carrier to one on ATT. What are the highest speed bands you able to get ... LTE, HSPA...?
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I'm sorry but where I live don't have Tmobile or Atnt. I was getting 4g LTE with my carrier.
Was having an issue with the phone losing signal when in poor reception area. Do I need ATT to activate phone with imei of xz1 or in order to get LTE do I need to have a previous att branded phones imei on the sim card? Is there any ATT bands this phone doesn't support? Just don't know why phone says no service when it is in a bad reception area. My iPhone 8 works perfect in the same areas.
Use an IMEI of a LTE AT&T phone if possible. If you give AT&T the IMEI of this phone it won't be in their database and it will be provisioned as a 3G device at best.
Do you have any issues with it losing a connection when there is poor cell phone reception?
****, this phone isn't functioning with AT&T LTE? That's a problem... Can anyone else confirm?
I have AT&T. When I got the phone I called them, gave them the IMEI and they did whatever they need to do and my phone works with LTE.
I had previously contacted their technical support before getting this phone to verify that band 12 would work as well.
Frontier3 said:
I have AT&T. When I got the phone I called them, gave them the IMEI and they did whatever they need to do and my phone works with LTE.
I had previously contacted their technical support before getting this phone to verify that band 12 would work as well.
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Log into your AT&T account online and see what they have for a device for your number. It works fine on AT&T LTE but I have had issues for years when giving them the IMEI of my Sony phones. Maybe they have joined us in the 21st century.
So, from what I have been reading online and asking my IRL friends, it seems like AT&T doesn't exactly let devices that aren't sold by the carrier automatically have provisioning for LTE and LTE+. You have to call them.
Only negative in general is that VoLTE and Wi-Fi Calling cannot be enabled as a company policy at this time on phones not directly sold by the carrier. Even the Google Pixel 2 can't get VoLTE on AT&T.
...Anyway, solution so far is to call AT&T via 611 or from another line at (800) 331-0500 and ask to "Activate my SIM"... And then ask for an agent. You'll need to give them the IMEI of your phone.
Only then, after you reboot your device, will your phone be provisioned for LTE.
Is this all correct??
I haven't had success giving them my Sony IMEI. I have a carrier version LG V30 and when I bought it, AT&T gave me a new sim. I pulled it and put it in my XZ1 and I have LTE.
As augie7107 mentioned, the trick seems to be getting an IMEI of an AT&T phone attached to your account and sim and you can get LTE on other non-branded phones. The sim I've been using has been the same one I've had since a launch day AT&T iPhone 6. I've used the sim in a number of unlocked Android and Windows phones without major issues: Nokia 925, Moto X Pure, Amazon Fire phone, Nokia 930 (no LTE), Nexus 6p, Axon 7, Xperia XZ, XZs, XZ1, and now an Essential PH-1.
augie7107 said:
I haven't had success giving them my Sony IMEI. I have a carrier version LG V30 and when I bought it, AT&T gave me a new sim. I pulled it and put it in my XZ1 and I have LTE.
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aj.eats.sushi said:
As augie7107 mentioned, the trick seems to be getting an IMEI of an AT&T phone attached to your account and sim and you can get LTE on other non-branded phones.
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What did the AT&T agents say when they wouldn't activate LTE?
When I received my XZ1c last week, data would not work at all - LTE or 3G.
After playing around with settings for an evening, I chatted with the AT&T service rep first thing the next day and he was happy to enable LTE using the Sony IMEI. I don't know if it depends on customer service agent, or if there is a policy difference, or what.
Hello,
My wife's Galaxy Note 8 somehow boots to different firmware based on SIM card inserted into it which surprised me since I thought that phones are usually coming with single firmware for either provider. I'm considering switching to T-Mobile from ATT and I have ATT branded Galaxy S9+ unlocked. My question will it have the same experience I noticed on my wife's phone or I have to deal with flashing firmware etc to make it work properly with WiFI calling etc features of native T-Mobile ROM?
Below message I received from Ebay seller which sold Galaxy Note 8. Is it true?
Thanks for contacting us. Samsung integrated new firmwares on S8 and newer model phones. Means whatever sim card you insert, it will program according to it. If you insert T-Mobile sim card, phone will restart and will show T-Mobile logo and apps. Same for AT&T and other GSM carriers. If you are AT&T user. Please insert the AT&T sim card and phone will ask you to restart the device with AT&T logo and apps. Tap yes.
artisticcheese said:
Hello,
My wife's Galaxy Note 8 somehow boots to different firmware based on SIM card inserted into it which surprised me since I thought that phones are usually coming with single firmware for either provider. I'm considering switching to T-Mobile from ATT and I have ATT branded Galaxy S9+ unlocked. My question will it have the same experience I noticed on my wife's phone or I have to deal with flashing firmware etc to make it work properly with WiFI calling etc features of native T-Mobile ROM?
Below message I received from Ebay seller which sold Galaxy Note 8. Is it true?
Thanks for contacting us. Samsung integrated new firmwares on S8 and newer model phones. Means whatever sim card you insert, it will program according to it. If you insert T-Mobile sim card, phone will restart and will show T-Mobile logo and apps. Same for AT&T and other GSM carriers. If you are AT&T user. Please insert the AT&T sim card and phone will ask you to restart the device with AT&T logo and apps. Tap yes.
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Click to collapse
Yes. It will work on any carrier. Even vzw or Sprint
Sent from my SM-G965U1 using Tapatalk
If unlocked ATT branded GS9+ phone will work on any other carrier, what is the point of the threads below about flashing T-Mobile CSC (or whatever it's called) to ATT phone and vice a versa, etc if phone already supports switching between carriers on it's own?
History:
Recently purchased a S23 Ultra (SM-S918U1) from Samsung USA. Downloaded and flashed the appropriate software for Samsung Canada (SM-S918W) using Patched Odin (3.14.1_3B). CSC, as expected, now reads TLS/TLS,TLS/XAA.
Network mode is set to 5G/LTE/WCDMA/GSM.
Problem:
I have strong signal in my area, 5G, but during phone calls, my signal drops from 5G to 3G (WCDMA) as opposed to the expected LTE+/LTE (4G or 4G+ for anyone outside of North America).
I have changed to a new SIM card and am able to reproduce the issue on my S22 Ultra.
I'm beginning to think it is a carrier issue, Telus, and have escalated to appropriate support tier for a callback.
Is anything else I should be looking for in-between? Specific flashing techniques or tools?
Thanks!
if you dont have VoLTE enabled then your signal goes to 3g during phone calls, its how the network works.
Aleks95 said:
if you dont have VoLTE enabled then your signal goes to 3g during phone calls, its how the network works.
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I greatly appreciate your help! I knew it would be something simple.
Enabling VoLTE is no longer available with this Canadian CSC (Telus/TLS).
I tested two devices; my S22 Ultra and Z Flip 4; the Z Flip 4 was purchased directly from Telus Canada, while the S22 Ultra was purchased from Samsung USA.
Following a factory reset and reboot, the Z Flip 4 automatically registers for IMS/VoLTE.
The same cannot be said for the S22 Ultra when running TLS. I see an option to enable 'VoLTE' if I switch back to XAA from XAC, but it doesn't do anything.
It appears the carrier may blacklist non-Telus purchased devices based on specific criteria (e.g., IMEI, serial number, etc).
This was not the case before 2021.
It is a carrier issue. Bell/Telus blocking VoLTE and WiFi Calling on non-Canadian devices that are not sold by Bell/Telus. If you put a Rogers SIM in your device, everything will work because Rogers is not limiting devices by IMEI and model number where Bell/Telus are!
File a CCTS complaint. The more they get. The hope that something will be done about it. They will also block your device from roaming on to US carriers and block 911 access as well. I get a text every month from Telus saying, "
TELUS Message: Hi J********, as you may be aware, carriers in the U.S. stopped supporting mobile devices on 3G networks.
You’re currently using a 3G phone that connects to 3G networks and the next time you roam in the U.S., you will no longer be able to use data, text or make phone calls - including 911.
To stay connected in the U.S., you need to replace your phone with an LTE or 5G capable phone.
Learn more about the 3G network turndown in the U.S. at https://sms.telus.com/a519646aed"
I purchased mine from T-Mobile USA and use it with my T-Mobile SIM and Telus eSIM. I am on the U1 firmware.
Just call the Telus, telling them you brought a S23u from Samsung Canada. The model is S23 Ultra or SM-S918W. They will "apply the IMS registration profile" to enable the VoLTE and WifiCalling. That's how I did on my S918B. You don't need to change the CSC at all.
Thank you all for your excellent responses. I appreciate your help.
Telus' advanced support confirmed that non-Canadian Samsung devices are being blocked
Telus requests IMEIs from Samsung and registers IMS (VoLTE/WiFi Calling) if it matches the corresponding devices.
Google and Apple are the only exceptions. These criteria do not apply to them.
The next stop for me is the CRTC. If this concerns you as a resident of Canada, more information can be found here:
How to Make a Complaint About Your Telephone Service | CRTC
Telephone service problems can be resolved by making a complaint to the phone company, CCTS or CRTC.
crtc.gc.ca
and2cs said:
Just call the Telus, telling them you brought a S23u from Samsung Canada. The model is S23 Ultra or SM-S918W. They will "apply the IMS registration profile" to enable the VoLTE and WifiCalling. That's how I did on my S918B. You don't need to change the CSC at all.
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Click to collapse
This is actually what I was planning to do but before I could ask, they, the Telus Rep., had already identified it as non-Telus device.
AHE_XDA said:
Thank you all for your excellent responses. I appreciate your help.
Telus' advanced support confirmed that non-Canadian Samsung devices are being blocked
Telus requests IMEIs from Samsung and registers IMS (VoLTE/WiFi Calling) if it matches the corresponding devices.
Google and Apple are the only exceptions. These criteria do not apply to them.
The next stop for me is the CRTC. If this concerns you as a resident of Canada, more information can be found here:
How to Make a Complaint About Your Telephone Service | CRTC
Telephone service problems can be resolved by making a complaint to the phone company, CCTS or CRTC.
crtc.gc.ca
Click to expand...
Click to collapse
CRTC won't do anything, neither will CCTS. They claim networks can do this for the "safety" of their network. Only Rogers allows US devices to use VoLTE for some reason.
I went through this last year.
and2cs said:
Just call the Telus, telling them you brought a S23u from Samsung Canada. The model is S23 Ultra or SM-S918W. They will "apply the IMS registration profile" to enable the VoLTE and WifiCalling. That's how I did on my S918B. You don't need to change the CSC at all.
Click to expand...
Click to collapse
Won't last sorry. If your IMEI isn't on the whitelist it will be eventually kicked off the profile.