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Samsung has begun rolling out the stable One UI 8 update for the Galaxy S21 FE, bringing Android 16, the September 2025 security patch, and a sizeable download to affected phones. The first wave is live in Southeast Asia, with a wider release expected soon.
What the One UI 8 update includes
The stable build is based on Android 16 and arrives with firmware version G990EXXUIHYJ2. It bundles the September 2025 Android security patch and requires a download of more than 2 GB — so make sure you have enough battery and a stable Wi‑Fi connection before starting the update.
- OS: Android 16 (One UI 8)
- Firmware: G990EXXUIHYJ2
- Security patch: September 2025
- Download size: 2 GB+ (varies by region and installed apps)
Where it's available and when you'll get it
At the moment, Samsung has seeded the stable One UI 8 update for the Galaxy S21 FE in Vietnam and Thailand. The rollout is typically staged, so expect additional markets to receive the update in the coming days or weeks. If you live outside those countries, hang tight — Samsung usually expands coverage quickly for flagship models like the S21 FE.
How to check and install the update
If you own a Galaxy S21 FE and haven't been notified yet, you can manually check for the update:
- Open Settings on your phone
- Scroll to and tap Software update
- Tap Download and install to search for the new build
Backup important data before updating and connect to Wi‑Fi to avoid unexpected mobile data charges. The installation may take a while and will reboot your device.
A quick note on pricing and models
The Galaxy S21 FE remains an affordable option in the S21 family. Typical retail examples include the 128GB/6GB RAM model (around €256 / £189) and the 256GB/8GB RAM version (around €329.98 / £249.99), though prices vary by retailer and region.
Why this matters
Receiving a stable Android 16-based One UI 8 build means improved system features, security updates, and continued support for the S21 FE — good news for owners who plan to keep their phones for another year or two. If you rely on your S21 FE for daily tasks, applying the update sooner rather than later will ensure better performance and patched vulnerabilities.
Keep an eye on Samsung's official channels and your phone's Software update screen; the new One UI 8 should appear automatically once the rollout reaches your region.
Source: gsmarena
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