Knowledge Base

Unlock Samsung Galaxy S4 free #unlocksamsunggalaxys4

handy giff-staffer

So you’ve picked up a shiny new Samsung Galaxy S4 but before you can enjoy the benefits of giffgaff, it'll need to be unlocked.


Thankfully there’s a simple solution to free your S4 without costing you a penny. It works on every version of the Galaxy S4 except EE's, so if you're in the mood for a little more giffgaff in your life, watch-on. Plus Tweet this post, or add a comment below and you will be entered into our Competition to win this unlocked S4


Good luck.


Unlock Samsung Galaxy S4




Step one: Turn the phone on and open up the dialler.


Step two: Then type *#0011# on the keypad.


Step three: Press the menu key, then tap BACK on the screen, press the menu key again and this time select KEY INPUT.

When the box appears enter the number ‘1’ and press OK.


Step four: Once again press the menu key and then tap BACK on the screen.

You should now be in the ServiceMode main menu.


Tap on the first option – [1]UMTS,

then tap the first option again [1]DEBUG SCREEN,

then tap on [6]PHONE CONTROL,

then [6]NETWORK LOCK and finally [3]PERSO SHA256 OFF.


Step five: Head back to the UMTS menu by pressing the menu button and tapping Back on the screen.


Step six: From here tap [6]COMMON, then [6]NV REBUILD and finally [4]RESTORE BACKUP.

Step seven: Now wait for a few minutes while your Galaxy S4 reboots.

Step eight: Once it’s running again, switch it off, pop in your giffgaff SIM and power it back on.


Congratulations you’re now free to enjoy giffgaff on your newly unlock Samsung Galaxy S4.


If your handset is locked to a different network, or you'd rather not unlock it yourself, don't forget to check out our Unlockapedia to find an unlocking service for your S4. You may also experience difficulties performing the unlock if you're on the latest firmware, again, try the Unlockapedia for advice.




  • Share this blog on Twitter by using the Twitter share button below, or comment on the blog to be entered into the competition to win
  • If you're using Twitter, make sure your Tweet contains the hashtag #unlocksamsunggalaxys4
  • Competition closes Friday September 13th at 7pm
  • Keep an eye on Twitter or the blog so that we can let you know if you're our lucky winner


Terms and Conditions

Click to reveal

Samsung Galaxy S4 unlocking Ts & Cs – Unlock Samsung Galaxy S4

Want to win a Samsung Galaxy S 4 (It’s not brand new as we’ve unlocked it) Retweet our blog or add a comment– using the Twitter Share button or comments section 

Make sure your tweet contains the hashtag #Unlocksamsunggalaxys4

1. By submitting your entry, you agree to be bound by the following terms and conditions.
2. You can enter if you’re 16 or over and a UK resident (but not if you’re a giffgaff employee, one of their family, or connected in any other way with this Competition. So hard cheese.) Obviously, third party entries, bulk entries or entries submitted by agents are off limits. We (giffgaff) reserve the right to check all entrants are actually eligible, and we reserve the right to require such information as we consider reasonably necessary in order to do that. If we’re not satisfied, you might not get your prize.
3. Entering’s a piece of cake. Hit the Twitter button on this post, or add a comment in the blog comments section– if you're using Twitter ensure you include the hashtag #UnlockSamsungGalaxyS4
4. You can retweet as many times as you like, but will only get entered into the competition once. Entries not complying with these terms and conditions will be invalid.
5. We can and will reject any entry, and/or disqualify any winner or entrant, if we think that the entry is defamatory, indecent or violates or infringes any third party’s rights.
6. We own the copyright on all entries submitted, and by entering into the competition you agree that we can use, display, publish, transmit, copy and otherwise exploit your submissions for any purposes we feel appropriate.
7. It’s not over till Friday 13th September at 7pm. And please don’t leave it until the last minute, in case technology lets you down.
8. A winner will be selected randomly from the entries. The prize will be sent by royal mail to UK addresses only.
9. We’ll let you all know the winner on our Twitter page and in the blog comments. If you’re the lucky winner, we’ll send you a tweet to share the good news. But we won’t let the prize sit around unclaimed, so if the winner is unable to be contacted by 5pm on the 18h September 2013 - or doesn’t tell us where to send it - we’ll choose another lucky winner.
10. We’re not responsible if you can’t take up the prize.
11. We’re not responsible for any entries that go astray. Ditto for acceptances or other documents or communications related to the Prize, or indeed the prize itself.
12. We’ll put the winner’s twitter id on our Twitter feed, and they may be required to participate in publicity connected with this Competition. If you enter, you agree to your name being made publicly available if you win.
13. In the event of fraud, abuse, and/or an error affecting the proper operation of this Competition, we reserve the right to end or suspend the Competition; amend these terms & conditions; declare void the notification of winner(s); and/or to allocate the Prize by conducting a simple draw from all entrants
14. If any provision of these terms and conditions is held invalid by any law, rule, order or regulation of any government, or by the final determination of any court of a competent jurisdiction, such invalidity shall not affect the enforceability of any other provisions not held to be invalid.
15. Our decision is final and no correspondence will be entered into.
16. We reserve the right to suspend, cancel or amend the promotion and/or review and revise these terms and conditions at any time without giving prior notice and by continuing to take part in the promotion subsequent to any revision of these terms and conditions, entrants shall be deemed to have agreed to any such new or amended terms.
17. This promotion is governed by English Law and is subject to the exclusive jurisdiction of the English courts.
18. The promoter of this Competition is giffgaff (that’s us), Hertz House, 11 Vine Street, Uxbridge, UB81QE
For any more information about us, visit our website




ace of spades
Thats great nice one victoria
This does not work 1st time. You will need to repeat a few times

Nice to see a free unlock of a recent phone Smiley Happy

competition time again. is this a surplus of phones ordered by giffgaff for the selling phones Smiley Tongue
just trust me...
Wow giffgaff are fab with all these giveaways

Great prize and good blog. The S4 might just be my next phone.

Many thanks for a great post !
Einstein a go-go
Brilliant Victoria and it might even bring in new customers, because when people type in 'network unlock S4' on Google they'll be given this page as an option and might find giffgaff the place to be and stay when they look around. A fantastic blog, thank you. Smiley Happy
I'm surprised such a recent phone can be unlocked so easily. Smiley Surprised Normally, it's like trying to get push an elephant up the stair. Smiley Wink
Einstein a go-go

At giffgaff they try and start early Sam, so give me a hand mate lol. Man Very Happy