[Galaxy S II Themes and Apps] badboys3:
For all of you whishing to SIM Unlock your Samsung Galaxy S2...

There are few ways of SIM unlocking you phone.

But before you do that you need to root your phone. There are many ways of checking if you have root access:

-through some applications from the market (root checker, titanium...)

-check if you have SuperUser icon in your Applications

-through some file explorers/managers (ES File Explorer, Root Explorer...) in which you check if you can see system files, and change them (renaming, coping...)

-etc...

If you are new to this (like I was) i would recomend trying a few of those ways just to be sure.

OK, if you have root, then proceed to the SIM Unlocking. As i said there are few ways of doing this. Follow this steps, and if one step fail, proceed to the next.

1. Through application in the first post of this thread. Complete information about it is there (in the first post).

- If this doesnt work you could try the original metod by Odia with hex editor (but if you dont know what are you doing i wouldnt recomend trying this). If you cant find nv_data.bin follow next step.

2. Use Galaxy_S Unlock. Dont let the name fool you, this app is (as stated when you install it) not just Galaxy S, but Galaxy S2, Galaxy Tab, Galaxy Note and their Variants.

Download this app from market! It is free, and the apps on rapid and such sites are old versions that does NOT support S2. For this app to work you need root (as mention before) AND Busybox (v1.17.1 recommended)! Busybox installer can be downloaded from market for free too. Read the FAQ for this app (it is no more than 10 sentences). If the unlock don't work, control if your efs folder is not locked in read only (only for SGS2, search SGS2 Repari) (or you can try to mount it as RW with some file explorer first).

Folow the steps on this app. If step "See SIM Unlock Code" dont give you code, proceed to step 1 (backing up files just in case...), step 2 (this one will take coulpe of minutes and will reboot you phone. Dont touch anything untill reboot is done!). After reboot, proceed to step 3. If you want (for example for warranty claim) you can re-lock your phone. Dont delete the app, and the back-uped folder efs located on your sdcard folder, you might need them one day (if something goes terrible wrong with flashing)...

3. You can buy SIM unlocking codes (price varying from 5 to 50$). Personally i wouldnt chose this option becouse I have trusting issue :) , but if you dont, make sure that website that is providing those service supports your version of S2 AND your network. Some of those websites gives warranty that those codes will work or they'll give you your money back...

4. You can go to some of mobile services in your country and let them unlock them for you. In my country the price for S2 is 13€. They have those boxes (that cost under 180$ depending on brand, such as Z3X, Easy-Unlocker, Et box...) and they will unlock it. Some of those box manufacturers claim that they can bring back your IMEI and such informations if you "loose it" by flashing rom's, but i dont know if that is true, or even possible. Btw above mentioned efs folder is the place that is backup containing those informations.

Hope this post will help you. Happy New Year and happy SIM Unlocking :)