The installation process requires completely wiping your phone’s internal storage. Back up all crucial data first.
This specific Android 10 build is designed primarily for the international variant of the Galaxy S3 ( GT-I9300 ). Do not attempt to flash this on carrier-specific US variants (like the SGH-I747 or SPH-L710) unless the developer thread explicitly states compatibility, as you will brick your phone.
Note: The initial boot cycle under Android 10 can take up to 10–15 minutes. The phone is setting up filesystems for a heavy OS. Be patient and do not force-restart the phone during this time. Performance Tips for Running Android 10 on 1GB RAM
Once the ROM finishes flashing, tap the back button, click again, and select the OpenGApps ZIP file. Swipe to flash Google Apps. samsung s3 custom rom android 10 link
However, the most important rule is Installing a custom ROM on an older device like the Galaxy S3 (likely the GT-i9300) carries risks.
Fetch the dedicated flashing utility directly from the Official TWRP for Galaxy S3 Download Portal. Used to wipe the device and flash the .zip packages.
For the , there is no official Android 10 support. However, developers have released unofficial versions of LineageOS 17.1 (based on Android 10) for this device . Top Custom ROMs for Android 10 Do not attempt to flash this on carrier-specific
Failing to follow instructions carefully can result in a "bricked" (unusable) device. Proceed at your own risk. Technical Prerequisites
According to developer tests, this unofficial build allows the S3 to run Android 10, bringing features like dark mode and improved security. Graphics & Display Audio (Playback and Recording) Wi-Fi & Bluetooth RIL (SIM card functionality, SMS, Data, Calls) USB Known Issues:
Download the following files and copy them to your phone's (not the internal storage): Be patient and do not force-restart the phone
You need Team Win Recovery Project (TWRP) version 3.3 or higher to handle Android 10 zip files. Official TWRP for Samsung Galaxy S3 (i9300)
Once complete, do not reboot yet. Go back to the install menu and select the .
is a legendary device, often hailed as a high point in Samsung’s early mobile history. Released in 2012 with Android 4.0.4 (Ice Cream Sandwich), its official support ended with Android 4.3 (Jelly Bean). However, thanks to the dedicated custom ROM development community, this classic smartphone can still run modern software. If you are looking to breathe new life into your
Flashing a custom ROM carries inherent risks, including the potential to brick your device. To ensure a smooth installation, verify that you meet all of the following requirements: