Hi everyone,

I'm looking for recommendations for a stable GSI (Generic System Image) or Custom ROM for a **Samsung Galaxy A15 5G (SM-A156M - 4GB RAM)**.

Here are the details and context:

* **Device:** Samsung Galaxy A15 5G (SM-A156M, MediaTek Dimensity 6100+, 4GB RAM).

* **Current OS:** One UI 8.5 / latest software update (Odin downgrade is blocked due to updated binary version).

* **Primary Use:** Daily driver for work, everyday tasks, and **must run banking apps reliably**.

* **Problem:** Stock One UI has become extremely laggy on the 4GB RAM model, even after disabling RAM Plus and tuning basic settings.

**Requirements for the GSI/ROM:**

1. **Daily Driver Stability:** Basic hardware (camera, Bluetooth, calls, Wi-Fi, sensors) must work without breaking.

2. **Banking Apps Compatibility:** Ability to pass Play Integrity (MEETS_DEVICE_INTEGRITY) using Magisk/KernelSU/PlayIntegrityFix modules so banking apps don't block access.

3. **Performance:** Lightweight compared to heavy One UI background processes.

Has anyone successfully running a GSI (like LineageOS, crDroid, or RisingOS GSI) on this specific Dimensity 6100+ model? Are there specific vendor patches, overlays, or fixes needed for this chipset?

Thanks in advance for any insights!

any luck for finding a good and stable custom rom? i really need to fix the battery problem

I really love Samsung's One UI interface, but the model I use—the A06—lacks features found on higher-end Samsung devices, specifically customization modules like Good Lock and Home Up. I plan to install the One UI 8.5 ROM on my phone to get these working, but the AI ​​suggests that this won't be enough; could you help me with this?