O2 XDA Serra vs Xiaomi Redmi Note 4G

Compare recorded specifications, size and practical differences.

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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.

  • Weight

    XDA Serra: 10 g lighter

    XDA Serra:
    165 g
    Redmi Note 4G:
    175 g
  • Width

    XDA Serra: 25 mm narrower

    XDA Serra:
    51 mm
    Redmi Note 4G:
    76 mm
  • Screen diagonal

    XDA Serra: 2.7 in smaller diagonal

    XDA Serra:
    2.8 in
    Redmi Note 4G:
    5.5 in
  • Chipset

    XDA Serra:
    Qualcomm MSM7201A
    Redmi Note 4G:
    Mediatek MT6797 Helio X20 (20 nm)
  • Depth

    Redmi Note 4G: 9.7 mm thinner

    XDA Serra:
    18.1 mm
    Redmi Note 4G:
    8.4 mm
  • Height

    XDA Serra: 49 mm shorter

    XDA Serra:
    102 mm
    Redmi Note 4G:
    151 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.

  1. 1. XDA Serra

    Height:
    102 mm
    Width:
    51 mm
    Depth:
    18.1 mm +9.7 mm versus Redmi Note 4G
  2. 2. Redmi Note 4G

    Height:
    151 mm +49 mm versus XDA Serra
    Width:
    76 mm +25 mm versus XDA Serra
    Depth:
    8.4 mm

Weight

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

  1. 1. XDA Serra

    165 g

  2. 2. Redmi Note 4G

    175 g

    +10 g versus XDA Serra

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.

  1. 1. XDA Serra

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Redmi Note 4G

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²

Redmi Note 4G has approximately 243.5% more rectangular screen area than XDA Serra.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

XDA Serra: Original memory entry

288 MB RAM · 512 MB ROM

Redmi Note 4G: Original memory entry

16 GB · 2 GB RAM - Standard edition64 GB · 3 GB RAM - High edition64 GB · 4 GB RAM - Exclusive

Practical features

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

1. XDA Serra

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD (dedicated slot)

2. Redmi Note 4G

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (uses SIM 2 slot)

Battery capacity

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

Recorded battery capacity

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

  1. 1. XDA Serra

    1340 mAh

  2. 2. Redmi Note 4G

    4100 mAh

    +2760 mAh versus XDA Serra

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. XDA Serra2. Redmi Note 4G

Everyday essentials
Everyday essentials — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
Dimensions (HxWxD)
  • 102 Х 51 Х 18.1 mm
  • 151 Х 76 Х 8.4 mm
Weight
  • 165 g
  • 175 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.8" inch
  • 5.5" inch
Screen resolution
  • 480 x 640 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 288 MB RAM
  • 512 MB ROM
  • 16 GB
  • 2 GB RAM - Standard edition64 GB
  • 3 GB RAM - High edition64 GB
  • 4 GB RAM - Exclusive
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 256 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1340 mAh
  • Removable Li-Ion
  • 4100 mAh
  • Non-removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 6.0 (Marshmallow); MIUI 10
Chipset
  • Qualcomm MSM7201A
  • Mediatek MT6797 Helio X20 (20 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 83.4 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 46.7%
  • 72.7%
PPI /points per inch/
  • 286 PPI
  • 401 PPI
Camera and Video
Camera and Video — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
Rear camera, main
  • 3.15 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 13 MP
  • PDAF
  • f/2.0
Functions
  • LED flash
  • Dual-LED dual-tone flash
  • HDR
  • panorama
Video
  • Yes
  • 720p
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • VGA videocall camera
  • 5 MP
  • f/2.0
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
Processor CPU
  • 528 MHz ARM 11
  • Deca-core 2.1 GHz
Graphics processor GPU
  • Adreno 130
  • Mali-T880 MP4
Antutu 7 score * Unknown
  • 21789
General specs
General specs — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
Release date
  • 2008
  • July
  • 2016
  • August
Colors
  • Black
  • Silver
  • Gray
  • Gold
  • Blue
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 170 EUR
Battery life
  • Stand by time- Up to 406 h Talking time- Up to 8 h
Unknown
Body build Unknown
  • Front glass
  • aluminum body
Communication and Connectivity
Communication and Connectivity — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
SIM card
  • Mini-SIM
  • Hybrid Dual SIM (Micro-SIM/Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA
  • LTE
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • miniUSB
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 2.0
  • A2DP
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
Radio
  • Stereo FM radio
  • RDS
  • FM radio
Others
  • Handwriting recognition
  • 24-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for XDA Serra, Redmi Note 4G.
SpecificationXDA SerraRedmi Note 4G
Dop
  • Sensors Accelerometer MP3/WAV/WMA player -MP4/WMV/3gp player -Pocket Office -Voice memo -Predictive text input
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - For China