Installing a is the only way to transform this aging flagship into a modern, secure, and blisteringly fast daily driver.
IMEI is unknown / No SIM card detected. Fix: You flashed a ROM for the wrong variant. Ensure it says star2lte (Plus) not starlte (S9). Restore your EFS backup if you made one. samsung s9 plus exynos custom rom
SafetyNet / Play Integrity fails (Netflix not in Play Store). Fix: Install Play Integrity Fix Magisk module and clear Play Store data. Use Shamiko to hide root. The Verdict: Is It Worth It in 2025? Absolutely. Installing a is the only way to transform
If you need a reliable camera and Samsung Pay, stick to a like Noble ROM. If you want raw speed and updates, go LineageOS 21 . Ensure it says star2lte (Plus) not starlte (S9)
The community is more active now than it was in 2020. With developers like AlexisXDA and Linux4 pushing Android 14 builds that are faster than One UI 2.5, there is no reason to throw this phone away.
The Exynos S9 Plus is a classic. With a custom ROM, it becomes a modern mid-ranger that beats many budget phones released in 2024. Don't let Samsung's planned obsolescence win—unlock, flash, and revive your device today. Disclaimer: Modifying your device software carries inherent risks, including permanent damage. The author is not responsible for bricked devices, lost IMEIs, or tripped Knox counters. Always read the specific XDA thread for your chosen ROM before proceeding.