Warning: installing a custom ROM can void warranty, may brick your device, and will erase data. Proceed only if you understand the risks and have a full backup.
Proceed only if you understand these risks. A bad flash on a Samsung MediaTek device is harder to recover than a Snapdragon device.
Samsung promises two major OS updates for the A13 5G (shipping with Android 11/12, ending with Android 13/14). Once Samsung stops support, custom ROMs keep going. You could be running Android 15 or 16 on your A13 5G long after Samsung drops it.
Here is the critical reality check. The Samsung A13 5G uses a MediaTek Dimensity 700 chipset.
Unlike Qualcomm Snapdragon devices, MediaTek chips are notoriously difficult to develop for. MediaTek is secretive with its source code, making it hard for developers to build stable custom kernels.
The Current Status (2024-2025): As of now, there are no fully stable, daily-driver custom ROMs for the Samsung A13 5G like LineageOS 20 or 21. You will find proof-of-concept builds on XDA Developers forums, but most suffer from:
However, if you are a developer or a tinkerer, there are "GSI" (Generic System Image) options available.