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  2. A1 Alpha vs Xiaomi Redmi Note 9S

A1 Alpha vs Xiaomi Redmi Note 9S

Compare recorded specifications, size and practical differences.

A1 Alpha

A1 Alpha

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      Key differences

      Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

      • WeightAlpha: 59 g lighterAlpha: 150 g · Redmi Note 9S: 209 g
      • Screen diagonalAlpha: 0.41 in smaller diagonalAlpha: 6.26 in · Redmi Note 9S: 6.67 in
      • Memory variantsAt 64 GB storageAlpha: 3 GB RAM · Redmi Note 9S: 4 GB RAM
      • ChipsetUnisoc SC9863A (28nm) / Qualcomm SM7125 Snapdragon 720G (8 nm)Alpha: Unisoc SC9863A (28nm) · Redmi Note 9S: Qualcomm SM7125 Snapdragon 720G (8 nm)
      • Rear camera layoutDual / QuadAlpha: Dual · Redmi Note 9S: Quad
      • DepthAlpha: 0.7 mm thinnerAlpha: 8.1 mm · Redmi Note 9S: 8.8 mm

      Physical size

      Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

      Front
      Alpha: 151.7 × 75.8 mm 1 Redmi Note 9S: 165.8 × 76.7 mm 2
      Side
      Alpha: 151.7 × 8.1 mm 1 Redmi Note 9S: 165.8 × 8.8 mm 2
      1. 1. Alpha
        Height
        151.7 mm
        Width
        75.8 mm
        Depth
        8.1 mm
        Weight
        150 g
      2. 2. Redmi Note 9S
        Height
        165.8 mm+14.1 mm versus Alpha
        Width
        76.7 mm
        Depth
        8.8 mm+0.7 mm versus Alpha
        Weight
        209 g
      Weight

      Bars start at zero and share a scale within this chart.

      1. 1. Alpha150 g
      2. 2. Redmi Note 9S209 g

        +59 g versus Alpha

      Screen size

      Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

      Screen size
      Alpha: 6.26 in, 19:9, About 97.8 cm² rectangular area 1 Redmi Note 9S: 6.67 in, 20:9, About 107.4 cm² rectangular area 2
      1. 1. Alpha 6.26 in · 19:9 About 97.8 cm² rectangular area
      2. 2. Redmi Note 9S 6.67 in · 20:9 About 107.4 cm² rectangular area

      Redmi Note 9S has approximately 9.8% more rectangular screen area than Alpha.

      Memory variants

      Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

      Recorded RAM by storage capacity and phone
      StorageAlphaRedmi Note 9S
      32 GB 2 GB RAM Not recorded
      64 GBRecorded for all phones 3 GB RAM 4 GB RAM
      128 GB Not recorded 6 GB RAM

      Practical features

      Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

      1. Alpha

      NFC
      See details Yes (64/3GB model only)
      Headphone jack
      Yes
      Memory card support
      See details microSD · up to 256 GB (uses shared SIM slot)

      2. Redmi Note 9S

      NFC
      Unknown
      Headphone jack
      Yes
      Memory card support
      See details microSDXC (dedicated slot)

      Battery capacity

      Capacity is not battery life. No endurance test is implied.

      Recorded capacity

      Bars start at zero and share a scale within this chart.

      1. 1. Alpha3200 mAh
      2. 2. Redmi Note 9S5020 mAh

        +1820 mAh versus Alpha

      Specifications

      Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

      1. Alpha2. Redmi Note 9S

      Everyday essentials
      Everyday essentials
      SpecificationAlphaRedmi Note 9S
      Dimensions (HxWxD)
      • 151.7 Х 75.8 Х 8.1 mm
      • 165.8 Х 76.7 Х 8.8 mm
      Weight
      • 150 g
      • 209 g
      Technology
      • IPS LCD
      • IPS LCD
      Screen size
      • 6.26" inch
      • 6.67" inch
      Screen resolution
      • 720 x 1520 px
      • 1080 x 2400 px
      Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
      • 32GB 2GB RAM
      • 64GB 3GB RAM
      • 64GB 4GB RAM
      • 128GB 6GB RAM
      Memory card support
      • microSD
      • up to 256 GB (uses shared SIM slot)
      • microSDXC (dedicated slot)
      BatteryCapacity is not battery life. No endurance test is implied.
      • 3200 mAh
      • Non-removable Li-Ion
      • 5020 mAh
      • Non-removable Li-Po
      Operating system OS
      • Android 9.0 (Pie)
      • Android 10.0; MIUI 11
      Chipset
      • Unisoc SC9863A (28nm)
      • Qualcomm SM7125 Snapdragon 720G (8 nm)
      NFC
      • Yes (64/3GB model only)
      		 Unknown
      Headphone jack
      • Yes
      • Yes
      Display
      Display
      SpecificationAlphaRedmi Note 9S
      Touchscreen
      • capacitive touchscreen
      • capacitive touchscreen
      Display colors
      • 16M
      • 16M
      Screen area
      • 97.8 cm2
      • 107.4 cm2
      Screen format
      • 19:9 (height:width)
      • 20:9 (height:width)
      Screen to body ratio
      • 82.1%
      • 84.5%
      PPI /points per inch/
      • 269 PPI
      • 395 PPI
      Screen protection Unknown
      • Corning Gorilla Glass 5
      Camera and Video
      Camera and Video
      SpecificationAlphaRedmi Note 9S
      Rear camera, main
      • 13 MP
      • Dual
      • 48 MP
      • Quad
      Camera specs
      • 13 MP
      • f/2.0
      • AF -2 MP
      • f/2.4
      • depth sensor
      • 48 MP
      • f/1.8
      • 26mm (wide)
      • 1/2.0''
      • 0.8µm
      • PDAF -8 MP
      • f/2.2
      • 13mm (ultrawide)
      • 1/4.0''
      • 1.12µm -5 MP
      • f/2.4
      • (macro)
      • 1.12µm -2 MP
      • (depth)
      Functions
      • LED flash
      • HDR
      • HDR
      • panorama
      Video
      • 1080p@30fps
      • 1080p@30fps
      Front camera, selfie
      • 8 MP
      • Single
      • 16 MP
      • Single
      Specifications
      • 8 MP
      • f/2.0
      • 16 MP
      • f/2.5
      • (wide)
      • 1.0µm
      Performance
      Performance
      SpecificationAlphaRedmi Note 9S
      Processor CPU
      • Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55)
      • Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)
      Graphics processor GPU
      • IMG8322
      • Adreno 618
      General specs
      General specs
      SpecificationAlphaRedmi Note 9S
      Release date
      • 2019
      • August
      • 2020
      • March 23
      Colors
      • Black
      • Green
      • Aurora Blue
      • Glacier white
      • Interstellar Gray
      Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
      • 150 EUR
      • $ 199
      Body build Unknown
      • Glass front (Gorilla Glass 5)
      • glass back (Gorilla Glass 5)
      • plastic frame
      Communication and Connectivity
      Communication and Connectivity
      SpecificationAlphaRedmi Note 9S
      SIM card
      • Hybrid Dual SIM (Nano-SIM
      • dual stand-by)
      • Dual SIM (Nano-SIM
      • dual stand-by)
      Network
      • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
      • 3(1800)
      • 5(850)
      • 7(2600)
      • 8(900)
      • 20(800)
      • 38(2600)
      • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
      • 2(1900)
      • 3(1800)
      • 4(1700/2100)
      • 5(850)
      • 7(2600)
      • 8(900)
      • 20(800)
      • 28(700)
      • 38(2600)
      • 40(2300)
      Speed
      • HSPA 42.2/5.76 Mbps
      • LTE Cat4 150/50 Mbps
      • HSPA 42.2/5.76 Mbps
      • LTE-A
      GPRS
      • Yes
      • Yes
      Edge
      • Yes
      • Yes
      Wi-Fi
      • Wi-Fi 802.11 b/g/n
      • Wi-Fi Direct
      • hotspot
      • Wi-Fi 802.11 a/b/g/n/ac
      • dual-band
      • Wi-Fi Direct
      • hotspot
      GPS
      • Yes
      • with A-GPS
      • GLONASS
      • Yes
      • with A-GPS
      • GLONASS
      • GALILEO
      • BDS
      USB
      • microUSB 2.0
      • USB On-The-Go
      • 2.0
      • Type-C 1.0 reversible connector
      Bluetooth
      • 4.2
      • A2DP
      • LE
      • 5.0
      • A2DP
      • LE
      Music and Audio
      Music and Audio
      SpecificationAlphaRedmi Note 9S
      Radio
      • FM radio
      • FM radio
      • recording
      Others
      • Active noise cancellation with dedicated mic
      • 450 nits typ. brightness (advertised)
      Other features
      Other features
      SpecificationAlphaRedmi Note 9S
      Dop
      • Sensors Fingerprint (rear-mounted)
      • accelerometer
      • gyro
      • proximity
      • compass
      • Sensors Fingerprint (side-mounted)
      • accelerometer
      • gyro
      • proximity
      • compass
      • Infrared port - Fast charging 18W - Splash-proof

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