Samsung Galaxy S21 5G vs Samsung Galaxy S9+
Side-by-side specs and price comparison for buyers in Algeria.
Samsung Galaxy S21 5G
Samsung Galaxy S9+
Price coming soon
Quick Verdict
Who wins each category, side by side.
Better price
Even
Faster chip
Even
Bigger battery
Samsung Galaxy S21 5G
Faster charging
Samsung Galaxy S21 5G
Higher-resolution camera
Samsung Galaxy S21 5G
Better display
Samsung Galaxy S21 5G
Lighter body
Samsung Galaxy S21 5G
Best value for money
Even
Full specs comparison
Display
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Size (inches) | 6.2 | 6.2 |
| Panel Type | AMOLED | AMOLED |
| Resolution Height | 2400 | 2960 |
| Resolution Width | 1080 | 1440 |
| Refresh Rate | 120 | — |
| Peak Brightness | 1300 | — |
| PPI | 421 | 529 |
| Glass Type | Corning Gorilla Glass Victus | Corning Gorilla Glass 5 |
| Screen-to-body | 87.2 | 84.2 |
Platform
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| CPU | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - InternationalOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China | Octa-core (4x2.7 GHz Mongoose M3 & 4x1.8 GHz Cortex-A55) - EMEAOcta-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA/LATAM, China |
| GPU | Mali-G78 MP14 - InternationalAdreno 660 - USA/China | Mali-G72 MP18 - EMEAAdreno 630 - USA/LATAM, China |
| Chipset Name | Exynos 2100 - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) | Exynos 9810 - EMEAQualcomm SDM845 Snapdragon 845 (10 nm) |
| Process (nm) | 5 | 10 |
| OS Name | Android | Android |
| UI Skin | One UI 6.1 | One UI 2.5 |
| OS Version | 11 | 8.0 |
Memory
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Card Slot | No | microSDXC (uses shared SIM slot) - dual SIM model only |
| Variants | 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM | 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM, 256GB 6GB RAM |
Main Camera
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10 + , stereo sound rec., gyro-EIS | 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR, stereo sound rec., gyro-EIS & OIS (30fps) |
| Features | LED flash, auto-HDR, panorama | LED flash, auto-HDR, panorama |
| Count | 3 | 2 |
| Telephoto | 64 MP, f/2, 29mm, (telephoto) | 12 MP, f/2.4, 52mm, (telephoto) |
| ultrawide | 12 MP, f/2.2, 13mm, (ultrawide) | — |
| Wide | 12 MP, f/1.8, 26mm, (wide) | 12 MP, f/1.5, 26mm, (wide) |
Selfie Camera
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Video | 4K@30/60fps, 1080p@30fps | 1440p@30fps |
| Features | HDR | HDR |
| Count | 1 | 2 |
| Lens | 10 MP, f/2.2, 26mm, (wide) | 2 MP |
Battery
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Capacity (mAh) | 4000 | 3500 |
| Chemistry | Li-Ion | Li-Ion |
| Wired Charging (W) | 25 | 15 |
| Wireless Charging (W) | 15 | — |
Body
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Build | Glass front (Gorilla Glass Victus), plastic back, aluminum frame | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame |
| SIM | Nano-SIM + eSIMNano-SIM + Nano-SIM + eSIM (max 2 at a time) | Nano-SIMNano-SIM + Nano-SIM |
| Height (mm) | 151.7 | 158.1 |
| Thickness (mm) | 7.9 | 8.5 |
| Weight (g) | 169 | 189 |
| Width (mm) | 71.2 | 73.8 |
Launch
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Announced | 2021, January 14 | 2018, February 25. Released 2018, March |
| Status | Available. Released 2021, January 29 | Discontinued |
Network
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| 2G Bands | GSM 850, 900, 1800, 1900 | GSM 850, 900, 1800, 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Bands | HSDPA 850, 900, 1700(AWS), 1900, 2100 | HSDPA 850, 900, 1700(AWS), 1900, 2100 - Global, USA |
| 4G Bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G991U1 | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - Global |
| 5G Bands | 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G991U1 | — |
| Speed | HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5 + Gbps DL) | HSPA 42.2/5.76 Mbps, LTE (6CA) Cat18 1200/200 Mbps |
| Technology | GSM, CDMA, HSPA, EVDO, LTE, 5G | GSM, CDMA, HSPA, EVDO, LTE |
Connectivity
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Bluetooth | 5 | 5 |
| NFC | Yes | Yes |
| Positioning | GPS, GLONASS, BDS, GALILEO | GPS, GLONASS, BDS, GALILEO |
| Radio | FM radio (Snapdragon model only; market/operator dependent) | FM radio (USA & Canada only) |
| USB Type | Type-C | Type-C |
| USB Version | 3.2 | 3.1 |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 5 |
Sound
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| 3.5mm Jack | No | Yes |
| Loudspeaker | Yes, with stereo speakers | Yes, with stereo speakers |
Features
| Spec | Samsung Galaxy S21 5G | Samsung Galaxy S9+ |
|---|---|---|
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer | Iris scanner, fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2 |
Buying advice for Algeria
Both Samsung Galaxy S21 5G and Samsung Galaxy S9+ are sold in Algeria, but they fit different priorities.
Samsung Galaxy S21 5G packs a 4000 mAh battery, which translates to longer screen-on time when you are away from a charger.
Samsung Galaxy S21 5G reaches a higher main-sensor resolution at 64 MP, which helps with crops and lower-light photos.
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