Nokia 6121 classic vs verykool SL5565 Rocket

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

    6121 classic: 83 g lighter

    6121 classic:
    89 g
    SL5565 Rocket:
    172 g
  • Width

    6121 classic: 33.2 mm narrower

    6121 classic:
    46 mm
    SL5565 Rocket:
    79.2 mm
  • Screen diagonal

    6121 classic: 3.5 in smaller diagonal

    6121 classic:
    2 in
    SL5565 Rocket:
    5.5 in
  • Depth

    SL5565 Rocket: 6.2 mm thinner

    6121 classic:
    15 mm
    SL5565 Rocket:
    8.8 mm
  • Height

    6121 classic: 51.4 mm shorter

    6121 classic:
    105 mm
    SL5565 Rocket:
    156.4 mm
  • Release year

    6121 classic:
    2007
    SL5565 Rocket:
    2017

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. 6121 classic

    Height:
    105 mm
    Width:
    46 mm
    Depth:
    15 mm +6.2 mm versus SL5565 Rocket
  2. 2. SL5565 Rocket

    Height:
    156.4 mm +51.4 mm versus 6121 classic
    Width:
    79.2 mm +33.2 mm versus 6121 classic
    Depth:
    8.8 mm

Weight

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

  1. 1. 6121 classic

    89 g

  2. 2. SL5565 Rocket

    172 g

    +83 g versus 6121 classic

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. 6121 classic

    Screen diagonal:
    2 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    12.4 cm²
  2. 2. SL5565 Rocket

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

SL5565 Rocket has approximately 573.2% 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 6121 classic, SL5565 Rocket, compared at the same storage capacity.
Storage6121 classicSL5565 Rocket
16 GB Unknown 2 GB RAM
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. 6121 classic

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

2. SL5565 Rocket

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 GB

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. 6121 classic

    890 mAh

  2. 2. SL5565 Rocket

    2700 mAh

    +1810 mAh versus 6121 classic

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. 6121 classic2. SL5565 Rocket

Everyday essentials
Everyday essentials — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
Dimensions (HxWxD)
  • 105 Х 46 Х 15 mm
  • 156.4 Х 79.2 Х 8.8 mm
Weight
  • 89 g
  • 172 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2" inch
  • 5.5" inch
Screen resolution
  • 240 x 320 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 MB
  • 64 MB RAM
  • 128 MB ROM
  • 16 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 8 GB (dedicated slot)
  • microSD
  • up to 128 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 890 mAh
  • Removable Li-Ion
  • 2700 mAh
  • Non-removable Li-Po
Operating system OS
  • Symbian 9.2
  • S60 rel. 3.1
  • Android 7.0 (Nougat)
Chipset Unknown
  • Mediatek MT6737 (28 nm)
Headphone jack
  • No
  • Yes
Display
Display — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 12.4 cm2
  • 83.4 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 25.6%
  • 67.3%
PPI /points per inch/
  • 200 PPI
  • 267 PPI
Camera and Video
Camera and Video — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
Rear camera, main
  • 2 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 2 MP
  • 13 MP
  • AF
  • f/2.2
Functions
  • LED flash
  • LED flash
Video
  • 320p
  • 720p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 8 MP
  • Single
Specifications
  • VGA videocall camera
  • 8 MP
  • f/2.8
Performance

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

Performance — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
Processor CPU
  • 369 MHz ARM 11
  • Quad-core 1.3 GHz Cortex-A7
Graphics processor GPU Unknown
  • Mali-T720MP2
Antutu 7 score * Unknown
  • 29395
General specs
General specs — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
Release date
  • 2007
  • June
  • 2017
  • August
Colors
  • Black
  • Pearl White
  • Pink
  • Sand Gold
  • Darg Gray
  • Gold
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 EUR
Unknown
Battery life
  • Stand by time- Up to 250 h (2G) / 240 h (3G) Talking time- Up to 3 h (2G) / 2 h 24 min (3G)
  • Stand by time- Up to 240 h (3G) Talking time- Up to 8 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
SIM card
  • Mini-SIM
  • 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 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE band 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 12(700)
  • 17(700) LTE band 2(1900)
  • 28(700)
Speed
  • HSPA 3.6/0.384 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 32
  • Yes
Edge
  • Class 32
  • 296 / 177.6 kbits
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
USB
  • miniUSB
  • microUSB 2.0
Bluetooth
  • 2.0
  • A2DP
  • 4.0
  • A2DP
  • LE
Harmful irradiation
  • SAR - 1.22 W/kg (head) 1.13 W/kg (body) SAR EU - 1.18 W/kg (head)
  • SAR - 0.45 W/kg (head) 1.29 W/kg (body)
Music and Audio
Music and Audio — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
Radio
  • Stereo FM radio
  • Stereo FM radio
Others
  • Downloadable wallpapers
  • screensavers
Unknown
Other features
Other features — specifications for 6121 classic, SL5565 Rocket.
Specification6121 classicSL5565 Rocket
Dop
  • 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
  • Sensors Fingerprint (front-mounted)
  • accelerometer
  • proximity