SIM-Unlock Samsung Galaxy S4 (SM-S975L)(TracFone/StraightTalk) - GSM-Forum

dtkool · 09-25-2016, 01:29

I'm trying to to Unlock this Galaxy S4 (SM-S975L)(Tracfone/StraightTalk USA)

Tried Unlock using GCKey Pro:
***NewQC Unlock Method****

#1) Log said it's SUCCESSFUL & UNLOCKED. (***1st Attempt***)
After Reboot it's STILL INVALID SIM CARD. (Not SIM Unlock Yet)

#2) GCKey Pro log mentioned about: (***2nd Attempt***)
New BaseBand Unlock not supported,Try downgrade modem.bin ..2752

================================================== =====
Using Version...1.0.0.0038
Selected Port ssudserd0001 = COM4
Selected Model GT-I5500
Selected Task SAMSUNG NEW-QC UNLOCK

Searching phone...

Build...M9615A-CEFWTAZM-4.0.17135

Device Detected...
model:= SM-S975L
Androids Version:= 4.3
Description Version:= jflteud-user 4.3 JSS15J S975LUDUAOF4 release-keys
Platform:= msm8960 [ qcom ] [ mdm ]
Baseband:= S975LUDUAOF4
VER:= S975LUDUAOF4/S975LTFNAOF4/S975LUDUAOF4/S975LUDUAOF4
Carrier := TFN_USA
EFS CSC := TFN
Network Mode := 0
Simstatus:= CARD_IO_ERROR
IMEI-1 = 3518920637XXXXX
ANDROID-ID = 24b62b33_351892063766633
Device is not rooted

SAMSUNG NEW-QC UNLOCK Started..
New BaseBand Unlock not supported,Try downgrade modem.bin ..2752

!!! Fail !!!!
Restart Phone if not auto...
Total Time Take...00:00:14
Log Saved
================================================== =====

Anyone have any idea which MODEM.BIN or version of baseband I should try to downgrade to unlock this Galaxy S4 (SM-S975L)?

This look like a CDMA Galaxy S4 Locked just like SPRINT USA Locked by baseband.

Someone care to comments please!!! Thanks!

stanner_austin · 09-25-2016, 05:32

Hello
There is no unlocking for tracefone.
Use search next time.

dtkool · 09-28-2016, 01:34

I did search and it seems like this Samsung S4 has similar or same M/B as AT&T Samsung S4 (SGH-I337) GSM.... [Not CDMA (Tracfone)]

Also, I saw on Youtube that a Vietnamese guy posted Unlock and use GSM for this Model#: SM-S975L (Samsung S4 Tracfone Straight Talk USA)...

Let me check and update with a Youtube links later on...

Here is the link [Not sure if I'm allow to post a link or not]
How Unlock Samsung TracFone Straight Talk SM S975L Galaxy S4
https://www.youtube.com/watch?v=1MWysLoRPFM

@stanner
Any idea what he did? Or did he reset the Unlock to 00000000 [8 zeros]?

dave357 · 10-22-2016, 18:05

Did anyone successfully get this model GSM unlocked?
Got a customer that wants it done.

dtkool · 11-04-2016, 19:53

Nope... I think there is a TEMP UNLOCK Solution with Unlock Code.

However, everytime you reboot or restarted the Galaxy S4, the phone will be RELOCK. You will have to Retype and Re-Unlock it again.

I'm still looking for a PERMANENT UNLOCK Solution for this Model (SM-S975L)

Here is a youtube video showing a Vietnamese guy unlocked. (Not sure this is permanent unlock solution or not):

https://www.youtube.com/watch?v=1MWysLoRPFM

Anyone or GCPro Key team care to work on this Samsung S4 Model: SM-S975L ?

09-25-2016, 01:29	#1 (permalink)
dtkool Insane Poster Join Date: Nov 2004 Location: USA Posts: 97 Member: 90682 Status: Offline Thanks Meter: 21	SIM-Unlock Samsung Galaxy S4 (SM-S975L)(TracFone/StraightTalk) I'm trying to to Unlock this Galaxy S4 (SM-S975L)(Tracfone/StraightTalk USA) Tried Unlock using GCKey Pro: *NewQC Unlock Method #1) Log said it's SUCCESSFUL & UNLOCKED. (1st Attempt) After Reboot it's STILL INVALID SIM CARD. (Not SIM Unlock Yet) #2) GCKey Pro log mentioned about: (2nd Attempt**) New BaseBand Unlock not supported,Try downgrade modem.bin ..2752 ================================================== ===== Using Version...1.0.0.0038 Selected Port ssudserd0001 = COM4 Selected Model GT-I5500 Selected Task SAMSUNG NEW-QC UNLOCK Searching phone... Build...M9615A-CEFWTAZM-4.0.17135 Device Detected... model:= SM-S975L Androids Version:= 4.3 Description Version:= jflteud-user 4.3 JSS15J S975LUDUAOF4 release-keys Platform:= msm8960 [ qcom ] [ mdm ] Baseband:= S975LUDUAOF4 VER:= S975LUDUAOF4/S975LTFNAOF4/S975LUDUAOF4/S975LUDUAOF4 Carrier := TFN_USA EFS CSC := TFN Network Mode := 0 Simstatus:= CARD_IO_ERROR IMEI-1 = 3518920637XXXXX ANDROID-ID = 24b62b33_351892063766633 Device is not rooted SAMSUNG NEW-QC UNLOCK Started.. New BaseBand Unlock not supported,Try downgrade modem.bin ..2752 !!! Fail !!!! Restart Phone if not auto... Total Time Take...00:00:14 Log Saved ================================================== ===== Anyone have any idea which MODEM.BIN or version of baseband I should try to downgrade to unlock this Galaxy S4 (SM-S975L)? This look like a CDMA Galaxy S4 Locked just like SPRINT USA Locked by baseband. Someone care to comments please!!! Thanks!

09-28-2016, 01:34	#3 (permalink)
dtkool Insane Poster Join Date: Nov 2004 Location: USA Posts: 97 Member: 90682 Status: Offline Thanks Meter: 21	I did search and it seems like this Samsung S4 has similar or same M/B as AT&T Samsung S4 (SGH-I337) GSM.... [Not CDMA (Tracfone)] Also, I saw on Youtube that a Vietnamese guy posted Unlock and use GSM for this Model#: SM-S975L (Samsung S4 Tracfone Straight Talk USA)... Let me check and update with a Youtube links later on... Here is the link [Not sure if I'm allow to post a link or not] How Unlock Samsung TracFone Straight Talk SM S975L Galaxy S4 https://www.youtube.com/watch?v=1MWysLoRPFM @stanner Any idea what he did? Or did he reset the Unlock to 00000000 [8 zeros]? Last edited by dtkool; 09-28-2016 at 01:42.

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09-25-2016, 05:32	#2 (permalink)
stanner_austin No Life Poster Join Date: Jan 2004 Location: Unknown Age: 39 Posts: 9,227 Member: 49752 Status: Offline Sonork: QQ:1474246528 Thanks Meter: 6,085	Hello There is no unlocking for tracefone. Use search next time.

10-22-2016, 18:05	#4 (permalink)
dave357 Freak Poster Join Date: Sep 2015 Posts: 101 Member: 2465022 Status: Offline Thanks Meter: 13	Did anyone successfully get this model GSM unlocked? Got a customer that wants it done.

11-04-2016, 19:53	#5 (permalink)
dtkool Insane Poster Join Date: Nov 2004 Location: USA Posts: 97 Member: 90682 Status: Offline Thanks Meter: 21	Nope... I think there is a TEMP UNLOCK Solution with Unlock Code. However, everytime you reboot or restarted the Galaxy S4, the phone will be RELOCK. You will have to Retype and Re-Unlock it again. I'm still looking for a PERMANENT UNLOCK Solution for this Model (SM-S975L) Here is a youtube video showing a Vietnamese guy unlocked. (Not sure this is permanent unlock solution or not): https://www.youtube.com/watch?v=1MWysLoRPFM Anyone or GCPro Key team care to work on this Samsung S4 Model: SM-S975L ?