CyanogenMod 12 Beta 3 ROM 5.0.2 Lollipop for Galaxy S3

If you are a Samsung Galaxy S3 GT-I9300 owner who has been using CyanogenMod 12 to enjoy Android 5.0 Lollipop, then we have some good news for you. CM12 for the Galaxy S3 has been available since early November and all users have been able to enjoy Lollipop for more than one month.

During this month, the ROM was in Alpha state which means a regular user shouldn’t install it as it is aimed towards experienced users who know how to install custom ROMs. Since the ROM was in Alpha stage all this month, it contained a lot of bugs.

Also Read: How To Install CyanogenMod 12 5.0 Lollipop ROM on Galaxy Note 2

When the first Alpha build was released a few weeks ago, things like WiFi, camera, 3G/4G mobile data, RIL and calls weren’t working.

The developer of the ROM, JustArchi, has now released the first Beta build of CyanogenMod 12 for the Samsung Galaxy S3. Beta means that the ROM is close to being stable.

Every ROM goes through three phases: Alpha, Beta and Stable. Alpha is the earliest phase and the ROM is usually full of bugs and it is not intended for normal users.

On Beta, most bugs are fixed but there might be some that developer hasn’t noticed or hasn’t been able to fix. Stable is the latest phase of the ROM. Every bug is fixed and all users can install it.

Benchmark Test

CyanogenMod 12 for the Samsung Galaxy S3 has just entered the Beta stage. Most of things that weren’t working before now are working like WiFi, camera, Bluetooth, all sensors, GPS, calls, RIL and NFC.

On top of that, Beta 1 brings Android 5.0.2 Lollipop to the Galaxy S3. Android 5.0.2 is the update to 5.0.1 and brings a few bug fixes and stability improvements.

Install CyanogenMod 12 Android 5.0.2 Lollipop on Galaxy S3

  1. Download CyanogenMod 12 Beta 1 ROM here and Gapps here.
  2. Install custom Recovery if you haven’t already.
  3. Boot into Recovery.
  4. Wipe cache and data.
  5. Flash the ROM.
  6. Flash Gapps.

Also Read: Install Nexus 6 Android 5.0 Lollipop ROM on Nexus 4

Reboot your phone. Since it is the first time that the phone is running on Android 5.0.2 Lollipop, first boot might take a while.


  1. But i don’t know why alot of apps and games doesn’t work like modern combat 5 , root unistaller …….
    What about you??

  2. According to my tests, I think the contacts portion should be checked as it mostly deletes the saved contacts, I am using import from SIM to gain them back……sharing it to help you resolve this issue on stable version.

  3. I have s3 gt-i9300 and I know nothing about how to install lollipop on my device… I want advises and guidance how do install and show me the right procedure plz..

  4. Hi i have s3 gt-i9301i not gt-i9300i .. so can i install this rom on my device .. please reply me because i am confused


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