Samsung Galaxy S8/S8+ Sim Unlock Code

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ChazzMatt

Recognized Contributor
Nov 30, 2010
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As long as you are using Straight Talk "AT&T" nothing needs to be unlocked. You are still on AT&T, but just using a high-lag MNVO.


WHICH carrier is your Straight Talk SIM card using? Straight Talk resells service from all four major carriers.

If you're using Straight Talk "T-Mobile", then you've got a problem.
 
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954wrecker

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Jul 9, 2012
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I have already pre-ordered Samsung Galaxy S8 and S8+ for me and my wife, will get it on 29th April. The both phones are from AT&T and I want to ask. Can I unlock them same day for Straight Talk carrier usage? I have a plan with straight talk with a cheap calls so I want to switch to them at the same day. found this this service where S8 already supported for sim unlocking. have somebody used this service before ? just want to be sure before making order there
Mod Edit
You probably dont need a pay service or any service at all to sim unlock it. AT&T has a website to unlock phones if they meet the criteria you just enter the info and they unlock it if you qualify.

https://www.att.com/deviceunlock/#/
 
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eldar4uk

Senior Member
May 13, 2010
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just a quick experience share. I've tried the service from the first post (Mod Edit). my s8+ was locked with a highest level of encryption (hard locked) by carrier, so delivery time was around 12 hours. price was 26 $ ( 13 $ first charge + 13 $ pending amount for hard locked phone). unlock code worked well from the first try and phone is unlocked now (switched from t-mobile to vodafone because they have better mobile data speed). thanks for the link. cheers
 
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SlackingVeteran

Senior Member
Mar 24, 2013
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just a quick experience share. I've tried the service from the first post (Mod Edit). my s8+ was locked with a highest level of encryption (hard locked) by carrier, so delivery time was around 12 hours. price was 26 $ ( 13 $ first charge + 13 $ pending amount for hard locked phone). unlock code worked well from the first try and phone is unlocked now (switched from t-mobile to vodafone because they have better mobile data speed). thanks for the link. cheers

Did you just say t-mobile? They use their own device unlock app right? I wonder how you were able to unlock t-mobile Samsung Galaxy S8.
 
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SlackingVeteran

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Mar 24, 2013
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I have already pre-ordered Samsung Galaxy S8 and S8+ for me and my wife, will get it on 29th April. The both phones are from AT&T and I want to ask. Can I unlock them same day for Straight Talk carrier usage? I have a plan with straight talk with a cheap calls so I want to switch to them at the same day. found this this service where S8 already supported for sim unlocking. have somebody used this service before ? just want to be sure before making order there
Mod Edit

This really sucks for me. I contacted them before ordering sim Unlock for T-Mobile USA. They said since all the services are down for T-Mobile through the official app they are doing it differently where I will have to use an app made by them to enter the unlock code. Everything was fine until today when I got email from them with unlock code and Network Unlock app. I followed there instruction but their app does nothing. its useless, its like a dummy app.
App says "Connecting to server..." while it doesn't even have internet access permission. I checked by disabling the wifi and mobile data, it was still functional (as expected because it had no internet excess) it prompted me to enter unlock code but it does nothing except for saying Permanently Unlocked it literally does nothing else after entering the code. Later on I tried entering wrong codes as well and it would still say Permanently Unlocked. I have sent them multiple emails and messages but no reply yet.

I am guess the unlock code they provided might be correct but there is no way to enter it on phone since it is T-Mobile variant and only Device Unlock App can enter the unlock code.
 
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gqukyo

Senior Member
Nov 9, 2009
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I bought a ATT version on day one of release and paid full retail at Best buy. Figured I can unlock via their site. Nope, in fact the IMEI # wasn't coming up at all. Kept saying it was not in the system. I called ATT but they couldn't help so I returned it and bought the Verizon version and works fine on Tmo via MintSim. Only bad thing is I have to use desktop software to update since it's not on the Verizon network.
 

annulation

Senior Member
Mar 4, 2008
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Mod Editis having a 2 day sale 30% off for $13 (vs $19). How can you tell if your phone is "hard locked"?

just a quick experience share. I've tried the service from the first post (samsungsimunlock.com). my s8+ was locked with a highest level of encryption (hard locked) by carrier, so delivery time was around 12 hours. price was 26 $ ( 13 $ first charge + 13 $ pending amount for hard locked phone). unlock code worked well from the first try and phone is unlocked now (switched from t-mobile to vodafone because they have better mobile data speed). thanks for the link. cheers
 
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vboyz103

Senior Member
Apr 9, 2006
878
139
I bought a ATT version on day one of release and paid full retail at Best buy. Figured I can unlock via their site. Nope, in fact the IMEI # wasn't coming up at all. Kept saying it was not in the system. I called ATT but they couldn't help so I returned it and bought the Verizon version and works fine on Tmo via MintSim. Only bad thing is I have to use desktop software to update since it's not on the Verizon network.

I'm assuming the VZW version is sim unlocked out of the box?
 

gqukyo

Senior Member
Nov 9, 2009
1,701
248
Correct, all their LTE phones are unlocked but they may not have the bands required for whichever provider one is looking to use it on. The S8 has the most bands that I read of the US releases though
 
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xavier2k3

Senior Member
Apr 11, 2010
278
30
Melbourne
I tried androidsimunlock.net who are my usual go to guys and they couldn't do it. So I paid at samsungsimunlock but haven't heard anything back yet. It's been over 12 hours, I've even emailed to follow up but heard nothing.

Anyone else used these guys successfully?
 

eldar4uk

Senior Member
May 13, 2010
212
46
Did you just say t-mobile? They use their own device unlock app right? I wonder how you were able to unlock t-mobile Samsung Galaxy S8.

yes, my phone is from t-mobile. do you mean pre-installed t-mobile device unlock app? I have tried to unlock my phone using that app too but with no success. every time I hit the unlock button the phone just displayed an error.
samsungsimunlock com provided Network Unlock app and after I've completed all steps from the step by step guide it said "your device is permanently unlocked". I've rebooted the phone with my vodafone sim card and the phone accepted it. also I have tried orange and three carrier sim cards, they all are worked well also. 4g/LTE is working well too :victory:
 

SlackingVeteran

Senior Member
Mar 24, 2013
707
345
yes, my phone is from t-mobile. do you mean pre-installed t-mobile device unlock app? I have tried to unlock my phone using that app too but with no success. every time I hit the unlock button the phone just displayed an error.
samsungsimunlock com provided Network Unlock app and after I've completed all steps from the step by step guide it said "your device is permanently unlocked". I've rebooted the phone with my vodafone sim card and the phone accepted it. also I have tried orange and three carrier sim cards, they all are worked well also. 4g/LTE is working well too :victory:

I followed their steps too but no luck yet. I have no idea why it does not work for me. After I was frustrated I decided crack down their app a little bit. It doesn't have any phone permission, I am guessing it cant put Unlock Code for the phone and the other thing is I tried some random numbers and it still said Permanently Unlocked.
Do you need to have the app installed all the time or is it fine to remove afterwards?
 
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  • 9
    just a quick experience share. I've tried the service from the first post (Mod Edit). my s8+ was locked with a highest level of encryption (hard locked) by carrier, so delivery time was around 12 hours. price was 26 $ ( 13 $ first charge + 13 $ pending amount for hard locked phone). unlock code worked well from the first try and phone is unlocked now (switched from t-mobile to vodafone because they have better mobile data speed). thanks for the link. cheers
    8
    There is the video about my locked telephone. I have two S8+. Both was succesful unlocked by http://www.samsungsimunlock.com
    https://www.youtube.com/watch?v=sjTBZ0A41Mc&feature=youtu.be

    PS: I didn't need to install some app or something else. ...
    I'm glade that it works and how I've said .. I wanted to share my experiences with another people who need help with that. Nobody have to buy for their services. I looked for some informations How to unlock my S8+ so I tried them and every telephone was succesful unlocked for 30USD...
    8
    Hi were you able to get your s8 freedom mobile unlocked. What was the source. I have tried several but nothing worked. Thx

    my friend from canada had same issue with his wife samsung s8 freedom mobile phone sim unlocking. he asked me to help with searching for unlocking solution and we have tried around five different sim unlocking services online. for some reason almost every service refused to unlock because of "hard lock" or smth. :rolleyes: the last one we tried was samsungsimunlock.com webiste and to our surprise it worked well. price was around 26$ with taxes, delivery time around 15 hours :good:
    6
    My phone is now unlocked.