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How To Guide [WIP][LTE only] Enable Samsung Pay on unsupported regions (May work on non-samsung phones)

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vijai2011

Retired Recognized Developer
Oct 24, 2011
1,000
493
chennai
So, I did ask around few other people who own a watch 4 lte in different CSC regions. Seems like the watch faces the same locked down situation like Samsung phones with certain CSC.

I looked into CSC, preconfig and indeed see a few telephony secret codes but none of them work so far on the watch. I guess, once the firmware starts releasing maybe from frija since I guess it's delivered the same way as for phones, it might get quite easy to change CSC. Only time would tell.
 

chanhny

Senior Member
Nov 19, 2009
129
12
Hello,
Got Samsung Pay to work on my GW4 classic LTE today.

Requirement

1. Any watch 4 with LTE. Currently there is no known method for changing CSC on BT variant until a way is found to open the CSC change menu.
2. Make sure to back up your watch settings before continuing. This will factory reset your watch
3. Patience and time to set up watch again from scratch

Possible issues/Unconfirmed possibilities

  • This guide might only work in regions where Samsung pay works on phones but is restricted on watches. Might not work in regions where S-pay doesn't exist at all.
  • While I do not think changing CSC voids warranty, I cannot be held responsible for any loss/issues arising because of this guide.
  • You will start receiving updates for the new CSC (or no updates if the model isnt sold in that region). This might also mean your network capabilities, carrier support might be affected.
  • This guide might work on a non-samsung phone too. If you try and it works, please report it.

GUIDE

  • Open dialer and enter below code to bring up CSC menu
    Code:
    *#272*IMEI#
    adb shell input text *#272*IMEI#
  • Now match any CSC from the list to known CSC from post #2. No match? Do not worry. Go to Post #3 to find a CSC that could work for you.
  • Select the CSC and tap install. This will reboot and reset the watch.
  • Get past the initial setup and see if you have Samsung pay installed.
    If not, you need to execute this in ADB after enabling developer options along with ADB Debugging and Debug over WiFi enabled.
    Code:
    adb shell pm install-existing com.samsung.android.samsungpay.gear
  • Once you have samsung pay installed, the app would open but you cannot add card yet until you install SPay wear plugin.
  • Head over to here, download and install the app on phone.
  • Once installed you can open samsung pay again on watch and continue adding your cards via phone by following the on-screen instructions.
  • Report the CSC you used so it could be added to the list of working CSC.

Instruction on Using ADB

I do not wish to repeat the same guide. Dante63 has made an excellent guide on ADB as part of his SHM mod here. Search for "~~~ ADB Text Instructions ~~~" in his thread and follow the instructions.
could you make sample video for guide? thanks.
 

salwan.hemant

Member
Jun 10, 2021
13
1
So, I did ask around few other people who own a watch 4 lte in different CSC regions. Seems like the watch faces the same locked down situation like Samsung phones with certain CSC.

I looked into CSC, preconfig and indeed see a few telephony secret codes but none of them work so far on the watch. I guess, once the firmware starts releasing maybe from frija since I guess it's delivered the same way as for phones, it might get quite easy to change CSC. Only time would tell.
This technique worked on your LTE watch. Can i expect that it will work on my LTE watch (Indian variant) also without disturbing my LTE functionality?
 

avirendra

Senior Member
Jul 3, 2009
208
37
Works on INU CSC with LTE. Added disclaimer to OP. Make sure to read it before you try.
When you change CSC region from India to some other region, did your mobile network worked? Which network are you using ? Is it Jio or Airtel? I want to install S-Pay, but do not want to lose my LTE capability on Airtel.
 

avirendra

Senior Member
Jul 3, 2009
208
37
A stupid question may be - instead of changing region can't we simply install Samsung pay apk for watch over ADB?
There Is Spay plug in for phone. Should those 2 should be sufficient?
 

avirendra

Senior Member
Jul 3, 2009
208
37
A stupid question may be - instead of changing region can't we simply install Samsung pay apk for watch over ADB?
There Is Spay plug in for phone. Should those 2 should be sufficient?
Any update if this is possible or the only option is region change?
Will region change will cause in problem with your LTE calling function?
 

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  • 1
    I am from India (CSC INU) where BP & ECG and S Pay / Google pay are not enabled due to govt. restrictions.

    For BP and ECG to work XDA forum member @Dante63 has done an excellent job. He has created modded APK file for SHM app of Mobile and Watch.

    Once we follow the procedure and install them BP and ECG features are working like a breeze. Absolutely no issues.

    We don't have to sacrifice warranty (which we loose if we change CSC)

    The only leftover would be Samsung Pay. Hope Dante63 could mod that too.

    Here is the link.

    1
    @gautamr9 did you get DUJA or any update after changing CSC? My ECG and BP apps were working without having to use MOD before, but now now. Not sure if Samsung updated Phone SHM to detect region.
    Did you check on possibility to change CSC again?
    No haven't got DUJA update. I've been wondering the same. If somehow changing the CSC prevents OTA. Let's see.

    Looks like there's no way to change back the csc as the USSD code for MEA seems to be different
    1
    Okay. Let's remain in touch if we learn something. (y)
    I took the watch to Samsung Service Centre and told them that the watch isn't updating. They used a manual tool (JIG) to update the watch. Surprisingly, the updated firmware on DUJA moved to the INU CSC. but still has the Samsung pay app on it. So it's a win-win for me right now.

    Screenshot_20211129_135110_sysui.png
    Screenshot_20211129_135140_settings.png
    1
    I took the watch to Samsung Service Centre and told them that the watch isn't updating. They used a manual tool (JIG) to update the watch. Surprisingly, the updated firmware on DUJA moved to the INU CSC. but still has the Samsung pay app on it. So it's a win-win for me right now.

    View attachment 5470409View attachment 5470411
    Thanks a lot for the update. I was thinking about it,but now that you have done it successfully, let me try it on this weekend.

    Thanks again for sharing
  • 6
    Hello,
    Got Samsung Pay to work on my GW4 classic LTE today.

    DISCLAIMER

    This method is not tested fully and do not attempt to try this if you care about updates and support. This might potentially lock you out of updates.


    Requirement

    1. Any watch 4 with LTE. Currently there is no known method for changing CSC on BT variant until a way is found to open the CSC change menu.
    2. Make sure to back up your watch settings before continuing. This will factory reset your watch
    3. Patience and time to set up watch again from scratch

    Possible issues/Unconfirmed possibilities

    • This guide might only work in regions where Samsung pay works on phones but is restricted on watches. Might not work in regions where S-pay doesn't exist at all.
    • While I do not think changing CSC voids warranty, I cannot be held responsible for any loss/issues arising because of this guide.
    • You will start receiving updates for the new CSC (or no updates if the model isnt sold in that region). This might also mean your network capabilities, carrier support might be affected.
    • This guide might work on a non-samsung phone too. If you try and it works, please report it.

    GUIDE

    • Open dialer and enter below code to bring up CSC menu
      Code:
      *#272*IMEI#
      adb shell input text *#272*IMEI#
    • Now match any CSC from the list to known CSC from post #2. No match? Do not worry. Go to Post #3 to find a CSC that could work for you.
    • Select the CSC and tap install. This will reboot and reset the watch.
    • Get past the initial setup and see if you have Samsung pay installed.
      If not, you need to execute this in ADB after enabling developer options along with ADB Debugging and Debug over WiFi enabled.
      Code:
      adb shell pm install-existing com.samsung.android.samsungpay.gear
    • Once you have samsung pay installed, the app would open but you cannot add card yet until you install SPay wear plugin.
    • Head over to here, download and install the app on phone.
    • Once installed you can open samsung pay again on watch and continue adding your cards via phone by following the on-screen instructions.
    • Report the CSC you used so it could be added to the list of working CSC.

    Instruction on Using ADB

    I do not wish to repeat the same guide. Dante63 has made an excellent guide on ADB as part of his SHM mod here. Search for "~~~ ADB Text Instructions ~~~" in his thread and follow the instructions.
    2
    This worked for me once. I changed the region to XFA and got the Spay working. Then realized that some of the health features like Blood Oxygen are still missing and that is possible in BTU so tried to change it again but this time the code did not work. I tried to reset the watch and still the code did not gave option to change CSC. Tried running command via CSC as well but again no change. It appears that I'm now locked into XFA CSC. Is there any way to change the CSC again?
    I'm using a LTE version of watch.
    2
    This technique worked on your LTE watch. Can i expect that it will work on my LTE watch (Indian variant) also without disturbing my LTE functionality?
    I just changed from inu csc to mea csc. Samsung pay enabled and working. Lte also working with airtel
    1
    CSC known to support Samsung Pay:

    MEA - Middle East
    SER - Unknown, Disables Bixby
    SKZ - Unknown
    XFA - Unknown

    Please help me identify the region for CSC mentioned unknown.
    1
    I took the watch to Samsung Service Centre and told them that the watch isn't updating. They used a manual tool (JIG) to update the watch. Surprisingly, the updated firmware on DUJA moved to the INU CSC. but still has the Samsung pay app on it. So it's a win-win for me right now.

    View attachment 5470409View attachment 5470411
    Thanks a lot for the update. I was thinking about it,but now that you have done it successfully, let me try it on this weekend.

    Thanks again for sharing