Samsung A21s Android Version – Which Android Does It Run & How to Update
Check current OS release: Open Settings → About phone → Software information and record the Build number, One UI entry and the Security patch level. If you loved this information and you want to receive more info concerning 1xbet promo code philippines please visit our website. The same screen shows the platform release (base Google mobile platform) and the device model code you will need when searching the maker’s support pages or firmware repositories.
Official upgrade route: Use the system software section inside Settings (menu label varies) to download and install available system builds over Wi‑Fi. If the menu on your handset is different, visit the vendor support site, enter the model code found in Settings → About phone, and follow the official desktop-tool instructions to apply the full firmware package.
Pre‑install checklist: 1) Back up app data and accounts to your Google account and export contacts/photos to cloud or PC. 2) Ensure at least 50% battery (ideally plugged in). 3) Free up ≥3 GB of internal storage. 4) Disable any VPN and remove unusual security locks if instructed by support. 5) Note that unlocked bootloaders or root access will typically block official installers and may void warranty.
Post‑install actions and recovery tips: After the installer finishes, reboot the phone and check Settings → About phone → Software information to confirm the new release and the security patch date. If the upgrade fails or the handset is not offered a newer build, use the model code to contact carrier or vendor support or to download the official firmware package for manual installation via the maker’s desktop utility; if you see repeated failures, boot into recovery (power + volume combination for your model) and perform cache wipe before retrying.
Model and release summary
Prefer the SM-A217F global SKU for the widest firmware pool and best carrier compatibility; confirm the exact model code in Settings → About before applying any firmware or performing an OS upgrade.
- Launch timeline: announced May 2020, global availability from June 2020.
- Common model codes: SM-A217F (global), SM-A217F/DS (dual‑SIM), SM-A217M (Latin America), SM-A217U (US unlocked), SM-A217N (Korea) – always match code to downloaded firmware.
- Platform: Exynos 850 (8 nm), octa‑core Cortex‑A55 up to 2.0 GHz; GPU Mali‑G52.
- Memory and storage: factory options 3 GB / 4 GB / 6 GB RAM with 32 GB / 64 GB / 128 GB internal; microSD slot supports expansion (up to 512 GB, region dependent).
- Display: 6.5″ PLS TFT, 720 × 1600 px.
- Imaging: rear quad array – 48 MP main (f/2.0), 8 MP ultrawide, 2 MP macro, 2 MP depth; front camera 13 MP.
- Battery and charging: 5,000 mAh cell with 15 W wired fast charging; expected endurance suitable for multi‑day light use.
- Connectivity and sensors: 4G LTE (no mmWave 5G), Wi‑Fi b/g/n, Bluetooth 5.0, USB‑C 2.0, 3.5 mm headphone jack, side‑mounted fingerprint sensor, FM radio on select markets, NFC available regionally.
- Dimensions and mass: approximately 163.7 × 75.3 × 8.9 mm; ~191 g.
- Software at launch: OS 10 with One UI 2.x; subsequent security and OS upgrades vary by market and carrier – check the manufacturer’s support page for your CSC code.
Practical recommendations:
- Match firmware to the exact model code and CSC – flashing a different‑region build can break network features and warranty coverage.
- Prefer factory/unlocked variants for faster patch delivery and easier bootloader access; carrier‑locked units often ship with a locked bootloader and vendor‑specific firmware.
- Before any firmware flash or OS upgrade: back up user data, ensure battery ≥50%, use official manufacturer tools or authorized service to avoid voiding warranty.
- For security patch cadence and confirmed upgrade eligibility, search the device model and CSC on the official support portal rather than third‑party mirrors.
Original Android version shipped
Shipped with Google OS 10 (API level 29) paired with One UI 2.0 Core; factory firmware generally carried a spring 2020 security patch (approx. March–May 2020).
Stock build delivered system-wide dark theme, gesture navigation, scoped storage, finer runtime permission controls and basic digital wellbeing tools. Base image targeted 64-bit mid‑range SoCs and used a Linux 4.x kernel common to 2020 handset releases.
To restore factory state or reapply the original release, obtain the exact regional firmware package (match model code and CSC), back up all user data, and flash via the manufacturer’s official desktop tool or an authorized service center. Do not flash mismatched carrier or region firmware – that frequently causes bootloops and may void warranty.
Keep a record of the original build number and security patch level before making any system changes; those identifiers are needed for correct firmware downloads, verifying compatibility with later upgrades, and troubleshooting after custom flashes.
