
Samsung Galaxy A51 vs Samsung Galaxy Note 9 vs Samsung Galaxy A9 (2018)



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Last Updated: Fri, 28 Aug'20
Basic Information
General
- Bluetooth5.0, A2DP, LE5.0, A2DP, LE, aptX5.0, A2DP, LE
Design
- Height6.24 inches6.37 inches6.40 inches
- Width2.90 inches3.01 inches3.03 inches
- Thickness0.31 inches0.35 inches0.31 inches
- Weight172 g201 g183 g
- ColorPrism Crush Black, Prism Crush White, Prism Crush BlueMetallic Copper, Lavender Purple, Ocean Blue, Midnight Black, Pure White, Alpine WhiteCaviar Black, Lemonade Blue, Bubblegum Pink
- BuildGlass front (Gorilla Glass 3), plastic back, plastic frameFront/back glass (Gorilla Glass 5), aluminum frameGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Display
- Screen Size6.5 inches6.4 inches6.3 inches
- Display TypeSuper AMOLED capacitive touchscreenSuper AMOLED capacitive touchscreenSuper AMOLED capacitive touchscreen
- Display Resolution1080 x 2400 pixels1440 x 2960 pixels1080 x 2220 pixels
- Pixel Density405 ppi516 ppi393 ppi
- Aspect Ratio20:918.5:918.5:9
- ProtectionCorning Gorilla Glass 3Corning Gorilla Glass 5
- Screen to Body Ratio87.4%83.40%80.10%
Performance
- OSAndroid 10, One UI 2.1Android 8.1 (Oreo), upgradable to Android 9.0 (Pie) One UIAndroid 8.0 (Oreo), upgradable to Android 9.0 (Pie)
- GPUMali-G72 MP3Mali-G72 MP18Adreno 512
- Chipset GPExynos 9611 (10nm)Exynos 9810 (10 nm)Qualcomm SDM660 Snapdragon 660 (14 nm)
- CPUOcta-core (4x2.3 GHz Cortex-A73 4x1.7 GHz Cortex-A53)Octa-core (4x2.7 GHz Mongoose M3 4x1.8 GHz Cortex-A55)Octa-core (4x2.2 GHz Kryo 260 4x1.8 GHz Kryo 260)
Memory & Storage
- RAM/Internal Storage128GB 6GB RAM, 128GB 8GB RAM512 GB, 8 GB RAM or 128 GB, 6 GB RAM64/128 GB, 6/8 GB RAM
- Expandable MemorymicroSDXC (dedicated slot)microSD, up to 1 TB (uses shared SIM slot) - dual SIM model onlymicroSD, up to 1 TB (dedicated slot)
Back Camera
- Quad Camera48 MP, f/2.0, 26mm (wide), 1/2.0, 0.8 micron|12 MP, f/2.2, 12mm (ultrawide)|5 MP, f/2.4, 25mm (macro), 1/5.0, 1.12 micron|5 MP, f/2.2, (depth)24 MP, f/1.7, 27mm (wide), 1/2.8, 0.9 micron|10 MP f/2.4, 52mm, (telephoto), 1/3.9, 1.0 micron, 2x optical zoom|8 MP, f/2.4, 12mm (ultrawide), 1/4.0, 1.12 micron|5 MP, f/2.2, 24mm (wide), 1/5.0, 1.12 micron, depth sensor
- AutofocusPDAFdual pixel PDAF, AFPDAF
- Back Camera Video4K30fps, 1080p30/120fps; gyro-EIS2160p60fps, 1080p240fps, 720p960fps, HDR, dual-video rec.2160p30fps, 1080p30fps
- Back Camera FeaturesLED flash, panorama, HDRLED flash, auto-HDR, panoramaLED flash, panorama, HDR
- Dual Camera12 MP, f/1.5-2.4, 26mm (wide), 1/2.55, 1.4 micron|12 MP, f/2.4, 52mm (telephoto), 1/3.4, 1.0 micron, 2x optical zoom
- OISOIS
Front Camera
- Single Camera32 MP, f/2.2, 26mm (wide), 1/2.8, 0.8 micron8 MP, f/1.7, 25mm (wide), 1/3.6, 1.22 micron, AF24 MP, f/2.0, 27mm (wide), 1/2.8, 0.9 micron
- Front Camera Video1080p30fps1440p30fps1080p30fps
- Front Camera FeaturesHDRDual video call, Auto-HDRHDR
Sound
- HeadPhone JackYesYesYes
- LoudspeakerYesYesYes
- Audio FeaturesDolby Atmos32-bit/384kHz audio|Active noise cancellation with dedicated micActive noise cancellation with dedicated mic|Dolby Atmos
Battery
- Battery Capacity4000 mAh battery4000 mAh3800 mAh
- User ReplaceableNon-removableNon-removableNon-removable
- Talk TimeUp to 32 (Hours 4G LTE)
- Music TimeUp to 87 (Hours)
- ChargingFast charging 15WFast battery charging 15W (Quick Charge 2.0)|Qi/PMA wireless charging (market dependent)Fast battery charging 18W
- Battery TypeLi-PoLi-IonLi-Ion
Communications
- WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspotWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspotWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
- GPSYes, with A-GPS, GLONASS, GALILEO, BDSYes, with A-GPS, GLONASS, BDS, GALILEOYes, with A-GPS, GLONASS, BDS, GALILEO
- RadioFM radioNoFM radio
- USB2.0, Type-C 1.0 reversible connector, USB On-The-Go3.1, Type-C 1.0 reversible connector2.0, Type-C 1.0 reversible connector
- NFCYesYesYes
- SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
- Network SupportGSM / HSPA / LTEGSM / CDMA / HSPA / EVDO / LTEGSM / HSPA / LTE
Miscellaneous Features
- SensorsFingerprint (under display, Accelerometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Virtual Proximity SensingIris scanner, fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer, heart rate, SpO2Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
- Water ResistantIP68 dust/water proof (up to 1.5m for 30 mins)
Launch
- Announced On2019, December2018, August2018, October
- StatusAvailable. Released 2020, January 29Available. Released 2018, AugustAvailable. Released 2018, November