Information: Samsung Galaxy S II ("i9100")

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Galaxy S II Specifications
Codename: i9100
Also known as: GT-I9100
Vendor: Samsung
Release date: 2011 February 11
Type: phone
GSM freq: 850 900 1800 1900 MHz GPRS/EDGE
850 900 1900 2100 MHz UMTS/HSPA+
Platform: Samsung Exynos 4210
CPU: 1.2 GHz dual-core Cortex A9
GPU: ARM Mali-400
Weight: 116 g (4.1 oz)
Dimensions: 125 mm (4.9 in) (h)
66 mm (2.6 in) (w)
9 mm (0.354 in) (d)
Screen size: 109 mm (4.3 in)
Resolution: 800x480
Screen density: 222 PPI
Internal storage: 16/32GB
SD Card: up to 32GB
Bluetooth: 3.0+HS
Wi-Fi: 802.11 a/b/g/n
Main camera: 8MP w/ LED-flash
Secondary camera: 1.9MP
Power: 1650 mAh
CM supported: 7, 9, 10, 10.1, 10.2, 11, 12.1, 13



The install guide assumes your device is running stock Android 4.x.


This device was previously called galaxys2. Current development uses the i9100 name, but older releases of CyanogenMod can still be downloaded from


Some second-generation Samsung Exynos devices are potentially susceptible to a "superbrick" caused by performing a factory reset with the stock kernel, which effectively kills the internal memory in the device. It is highly recommended you do not perform this operation while using a stock kernel for safety reasons. To make sure you aren't running the stock kernel (only needed when coming from the stock ROM), fully install CM without performing a factory reset and reboot to recovery before you perform the factory reset.


If you used a non-official method to remove a provider lock, your /efs partition may become corrupt! It is highly recommended you make a backup of this for safe keeping before attempting to modify your device, especially if you plan to remove such a lock.


The newest CM11 Gapps package (20140606) is too big for the /system partition of i9100. Please use the 20140105 package instead.

Get CyanogenMod for the Galaxy S II

Development channel a.k.a. Nightlies, usually generated every 24 hours, experimental, newest features, unstable! Release channel a.k.a. Milestones or Snapshots, all or nearly all issues resolved, stable for daily use


How to install CyanogenMod on the Galaxy S II

Or build CyanogenMod yourself

Build guide

How to build CyanogenMod for the Galaxy S II

Source code


Additional resources

Special boot modes

  • Recovery: Volume Up, Home, & Power
  • Download: Volume Down, Home & Power

Known Issues

To see a list of known issues, or to submit an issue, visit the Known Issues page for the Galaxy S II.

Find help online

You may find assistance with the Galaxy S II on Internet Relay Chat or on the CyanogenMod forums.


The following people are maintainers for this device: Caio Schnepper

Edit the i9100 device template

This wiki has a "master" device template for adjusting settings pertaining specifically to the Galaxy S II (learn more). To change these master settings, edit the wiki device template at Template:device_i9100.

Helpful Tip

See something wrong on this page? Click here: Report a Wiki Problem.