BlackBerry Key2 vs Nokia 6121 classic

Compare recorded specifications, size and practical differences.

+ Add a third phone

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

    6121 classic: 79 g lighter

    Key2:
    168 g
    6121 classic:
    89 g
  • Width

    6121 classic: 25.8 mm narrower

    Key2:
    71.8 mm
    6121 classic:
    46 mm
  • Screen diagonal

    6121 classic: 2.5 in smaller diagonal

    Key2:
    4.5 in
    6121 classic:
    2 in
  • Rear camera layout

    Key2:
    Dual
    6121 classic:
    Single
  • Depth

    Key2: 6.5 mm thinner

    Key2:
    8.5 mm
    6121 classic:
    15 mm
  • Height

    6121 classic: 46.4 mm shorter

    Key2:
    151.4 mm
    6121 classic:
    105 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 +46.4 mm versus 6121 classic
    Width:
    71.8 mm +25.8 mm versus 6121 classic
    Depth:
    8.5 mm
  2. 2. 6121 classic

    Height:
    105 mm
    Width:
    46 mm
    Depth:
    15 mm +6.5 mm versus Key2

Weight

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

  1. 1. Key2

    168 g

    +79 g versus 6121 classic

  2. 2. 6121 classic

    89 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. 6121 classic

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

Key2 has approximately 386.8% more rectangular screen area than 6121 classic.

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, 6121 classic, compared at the same storage capacity.
StorageKey26121 classic
64 GB 6 GB RAM Unknown
128 GB 6 GB RAM Unknown
6121 classic: Original memory entry

32 MB · 64 MB RAM · 128 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. 6121 classic

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD · up to 8 GB (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

    +2610 mAh versus 6121 classic

  2. 2. 6121 classic

    890 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. 6121 classic

Everyday essentials
Everyday essentials — specifications for Key2, 6121 classic.
SpecificationKey26121 classic
Dimensions (HxWxD)
  • 151.4 Х 71.8 Х 8.5 mm
  • 105 Х 46 Х 15 mm
Weight
  • 168 g
  • 89 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4.5" inch
  • 2" inch
Screen resolution
  • 1080 x 1620 px
  • 240 x 320 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
  • 32 MB
  • 64 MB RAM
  • 128 MB ROM
Memory card support
  • microSD
  • up to 256 GB
  • microSD
  • up to 8 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3500 mAh
  • Non-removable Li-Ion
  • 890 mAh
  • Removable Li-Ion
Operating system OS
  • Android 8.1 (Oreo)
  • Symbian 9.2
  • S60 rel. 3.1
Chipset
  • Qualcomm SDM660 Snapdragon 660 (14 nm)
Unknown
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for Key2, 6121 classic.
SpecificationKey26121 classic
Touchscreen
  • capacitive touchscreen
Unknown
Display colors
  • 16M
  • 16M
Screen area
  • 60.0 cm2
  • 12.4 cm2
Screen format
  • 3:2 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 55.2%
  • 25.6%
PPI /points per inch/
  • 434 PPI
  • 200 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Key2, 6121 classic.
SpecificationKey26121 classic
Rear camera, main
  • 12 MP
  • Dual
  • 2 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
  • 2 MP
Functions
  • Dual-LED dual-tone flash
  • HDR
  • panorama
  • LED flash
Video
  • 1080p@30fps
  • 320p
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, 6121 classic.
SpecificationKey26121 classic
Processor CPU
  • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
  • 369 MHz ARM 11
Graphics processor GPU
  • Adreno 512
Unknown
Antutu 7 score *
  • 104256
Unknown
GeekBench 4 Single Core *
  • 1628
Unknown
GeekBench 4 Multi-Core *
  • 5894
Unknown
General specs
General specs — specifications for Key2, 6121 classic.
SpecificationKey26121 classic
Release date
  • 2018
  • June
  • 2007
  • June
Colors
  • Black
  • Silver
  • Black
  • Pearl White
  • Pink
  • Sand Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 500 EUR
  • 180 EUR
Battery life Unknown
  • Stand by time- Up to 250 h (2G) / 240 h (3G) Talking time- Up to 3 h (2G) / 2 h 24 min (3G)
Body build
  • aluminum frame (7000 series)
  • plastic back
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Key2, 6121 classic.
SpecificationKey26121 classic
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 3.6/0.384 Mbps
GPRS
  • Yes
  • Class 32
Edge
  • Yes
  • Class 32
  • 296 / 177.6 kbits
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • No
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS2
  • No
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)
  • SAR - 1.22 W/kg (head) 1.13 W/kg (body) SAR EU - 1.18 W/kg (head)
Music and Audio
Music and Audio — specifications for Key2, 6121 classic.
SpecificationKey26121 classic
Radio
  • FM radio
  • Stereo FM radio
Others
  • Active noise cancellation with dedicated mic
  • Downloadable wallpapers
  • screensavers
Other features
Other features — specifications for Key2, 6121 classic.
SpecificationKey26121 classic
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
  • Push to talk -WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document viewer (Word
  • Excel
  • PowerPoint
  • PDF) -Voice memo/dial -Predictive text input -Organizer