: Since custom ROMs don't include Google apps, download the OpenGApps package. Select ARM , 10.0 , and the Pico or Nano variant to fit the S3’s limited system partition.
Getting Android 10 onto your classic Samsung Galaxy S3 (GT-I9300) is a feat of modern software engineering. While Samsung officially stopped supporting the S3 years ago at Android 4.3, the developer community has managed to port , which is based on Android 10, to this legendary hardware. Best Android 10 Custom ROMs for Samsung S3 samsung s3 custom rom android 10 link
Installing a custom ROM will wipe all your data. Always perform a in TWRP before proceeding. : Since custom ROMs don't include Google apps,
Because the S3 is considered "Ultra Legacy" hardware, official support has ended, but unofficial builds are actively maintained by developers like and rINanDO . While Samsung officially stopped supporting the S3 years