BlackBerry Key2 vs O2 XDA Serra

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.

  • Width

    XDA Serra: 20.8 mm narrower

    Key2:
    71.8 mm
    XDA Serra:
    51 mm
  • Screen diagonal

    XDA Serra: 1.7 in smaller diagonal

    Key2:
    4.5 in
    XDA Serra:
    2.8 in
  • Chipset

    Key2:
    Qualcomm SDM660 Snapdragon 660 (14 nm)
    XDA Serra:
    Qualcomm MSM7201A
  • Rear camera layout

    Key2:
    Dual
    XDA Serra:
    Single
  • Depth

    Key2: 9.6 mm thinner

    Key2:
    8.5 mm
    XDA Serra:
    18.1 mm
  • Height

    XDA Serra: 49.4 mm shorter

    Key2:
    151.4 mm
    XDA Serra:
    102 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. Key2

    Height:
    151.4 mm +49.4 mm versus XDA Serra
    Width:
    71.8 mm +20.8 mm versus XDA Serra
    Depth:
    8.5 mm
  2. 2. XDA Serra

    Height:
    102 mm
    Width:
    51 mm
    Depth:
    18.1 mm +9.6 mm versus Key2

Weight

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

  1. 1. Key2

    168 g

    +3 g versus XDA Serra

  2. 2. XDA Serra

    165 g

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. Key2

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    60.3 cm²
  2. 2. XDA Serra

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²

Key2 has approximately 148.4% 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.

Recorded RAM for Key2, XDA Serra, compared at the same storage capacity.
StorageKey2XDA Serra
64 GB 6 GB RAM Unknown
128 GB 6 GB RAM Unknown
XDA Serra: Original memory entry

288 MB RAM · 512 MB ROM

Practical features

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

1. Key2

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB

2. XDA Serra

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD (dedicated 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. Key2

    3500 mAh

    +2160 mAh versus XDA Serra

  2. 2. XDA Serra

    1340 mAh

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. Key22. XDA Serra

Everyday essentials
Everyday essentials — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
Dimensions (HxWxD)
  • 151.4 Х 71.8 Х 8.5 mm
  • 102 Х 51 Х 18.1 mm
Weight
  • 168 g
  • 165 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4.5" inch
  • 2.8" inch
Screen resolution
  • 1080 x 1620 px
  • 480 x 640 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64/128 GB
  • 6 GB RAM
  • 288 MB RAM
  • 512 MB ROM
Memory card support
  • microSD
  • up to 256 GB
  • microSD (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3500 mAh
  • Non-removable Li-Ion
  • 1340 mAh
  • Removable Li-Ion
Operating system OS
  • Android 8.1 (Oreo)
  • Microsoft Windows Mobile 6.1 Professional
Chipset
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
  • Qualcomm MSM7201A
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 60.0 cm2
  • 24.3 cm2
Screen format
  • 3:2 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 55.2%
  • 46.7%
PPI /points per inch/
  • 434 PPI
  • 286 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
Rear camera, main
  • 12 MP
  • Dual
  • 3.15 MP
  • Single
Camera specs
  • 12 MP
  • f/1.8
  • 1/2.3''
  • 1.28µm
  • dual pixel PDAF -12 MP
  • f/2.6
  • 1/3.4''
  • 1.0µm
  • PDAF
  • 3.15 MP
  • AF
Functions
  • Dual-LED dual-tone flash
  • HDR
  • panorama
  • LED flash
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 8 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 8 MP
  • f/2.0
  • 1/4''
  • 1.12µm
  • VGA videocall camera
Performance

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

Performance — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
Processor CPU
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
  • 528 MHz ARM 11
Graphics processor GPU
  • Adreno 512
  • Adreno 130
Antutu 7 score *
  • 104256
Unknown
GeekBench 4 Single Core *
  • 1628
Unknown
GeekBench 4 Multi-Core *
  • 5894
Unknown
General specs
General specs — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
Release date
  • 2018
  • June
  • 2008
  • July
Colors
  • Black
  • Silver
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 500 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 406 h Talking time- Up to 8 h
Body build
  • aluminum frame (7000 series)
  • plastic back
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
SIM card
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by) - BBF100-6 only
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (BBF100-6 model only) -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)
  • 12(700)
  • 13(700)
  • 17(700)
  • 19(800)
  • 20(800)
  • 26(850)
  • 28(700)
  • 32(1500)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500) - EU
  • Africa
  • AU (BBF100-1) LTE band 1(2100)
  • 14(700)
  • 29(700)
  • 30(2300)
  • 41(2500)
  • 66(1700/2100) - Canada
  • US
  • LATAM (BBF100-2) LTE band 1(2100)
  • 41(2500) - ME
  • APAC
  • India (BBF100-6) LTE band 1(2100)
  • 41(2500) - China (BBF100-4)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (3CA) Cat11 600/75 Mbps
  • HSPA 7.2/0.384 Mbps
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS2
  • Yes
  • with A-GPS
USB
  • 3.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
  • miniUSB
Bluetooth
  • 5.0
  • A2DP
  • LE
  • EDR
  • 2.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.72 W/kg (head) 1.68 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
Radio
  • FM radio
  • Stereo FM radio
  • RDS
Others
  • Active noise cancellation with dedicated mic
  • Handwriting recognition
Other features
Other features — specifications for Key2, XDA Serra.
SpecificationKey2XDA Serra
Dop
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging: 50% in 36 min (Quick Charge 3.0) - Capacitive touch 4-row BlackBerry keyboard - Versions: BBF100-1 (EU
  • Africa
  • AU); BBF100-2 (Canada
  • US
  • LATAM); BBF100-6 (ME
  • APAC
  • India); BBF100-4 (China) Also known as BlackBerry Athena
  • Sensors Accelerometer MP3/WAV/WMA player -MP4/WMV/3gp player -Pocket Office -Voice memo -Predictive text input