Celkon A9 Dual vs Nokia 5.1

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

    A9 Dual: 6.8 mm narrower

    A9 Dual:
    63.9 mm
    5.1:
    70.7 mm
  • Screen diagonal

    A9 Dual: 2 in smaller diagonal

    A9 Dual:
    3.5 in
    5.1:
    5.5 in
  • Depth

    5.1: 2.4 mm thinner

    A9 Dual:
    10.6 mm
    5.1:
    8.2 mm
  • Height

    A9 Dual: 30.6 mm shorter

    A9 Dual:
    120.5 mm
    5.1:
    151.1 mm
  • Release year

    A9 Dual:
    2014
    5.1:
    2018

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. A9 Dual

    Height:
    120.5 mm
    Width:
    63.9 mm
    Depth:
    10.6 mm +2.4 mm versus 5.1
    Weight:
    116 g
  2. 2. 5.1

    Height:
    151.1 mm +30.6 mm versus A9 Dual
    Width:
    70.7 mm +6.8 mm versus A9 Dual
    Depth:
    8.2 mm
    Weight:
    Unknown

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. A9 Dual

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    36.5 cm²
  2. 2. 5.1

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    78.1 cm²

5.1 has approximately 114% more rectangular screen area than A9 Dual.

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.

A9 Dual: Original memory entry

512 MB · 256 MB RAM

5.1: Original memory entry

32 GB · 3 RAM 16 GB · 2 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. A9 Dual

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB

2. 5.1

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 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. A9 Dual

    1350 mAh

  2. 2. 5.1

    2970 mAh

    +1620 mAh versus A9 Dual

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. A9 Dual2. 5.1

Everyday essentials
Everyday essentials — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
Dimensions (HxWxD)
  • 120.5 Х 63.9 Х 10.6 mm
  • 151.1 Х 70.7 Х 8.2 mm
Weight
  • 116 g
  • 0 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 3.5" inch
  • 5.5" inch
Screen resolution
  • 320 x 480 px
  • 1080 x 2160 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB
  • 256 MB RAM
  • 32 GB
  • 3 RAM 16 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1350 mAh
  • Li-Ion
  • 2970 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 4.2.2 (Jelly Bean)
  • Android 8.0 (Oreo); Android One
Chipset Unknown
  • MediaTek Helio P18
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors Unknown
  • 16M
Screen area
  • 36.5 cm2
  • 78.1 cm2
Screen format
  • 3:2 (height:width)
  • 18:9 (height:width)
Screen to body ratio
  • 47.4%
  • 73.1%
PPI /points per inch/
  • 165 PPI
  • 439 PPI
Screen protection Unknown
  • Corning Gorilla Glass (unspecified version)
Camera and Video
Camera and Video — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
Rear camera, main
  • 2 MP
  • Single
  • 16 MP
  • Single
Camera specs
  • 2 MP
  • 16 MP
  • PDAF
Functions Unknown
  • Dual-LED dual-tone flash
  • HDR
  • panorama
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 8 MP
  • Single
Specifications
  • VGA
  • 8 MP
Performance

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

Performance — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
Processor CPU
  • Dual-core 1.0 GHz
  • Octa-core (4x2.0 GHz Cortex-A53 & 4x1.2 GHz Cortex-A53)
Graphics processor GPU Unknown
  • Mali-T860MP2
Antutu 7 score * Unknown
  • 62350
General specs
General specs — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
Release date
  • 2014
  • 2018
  • May
Colors
  • White
  • Black
  • copper
  • Tempered Blue
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 180 EUR
Battery life
  • Stand by time- Up to 240 h Talking time- Up to 3 h 20 min
  • Talking time- Up to 19 h (3G) Music play - Up to 53 h
Body build Unknown
  • Front glass
  • Aluminum body (6000 series)
Communication and Connectivity
Communication and Connectivity — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
SIM card
  • Dual SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 - India -3G - HSDPA 850 / 900 / 2100 - APAC
  • EMEA
  • HK HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - LATAM
  • AU
  • TW -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 38(2600)
  • 40(2300) - APAC
  • HK LTE band 1(2100)
  • 2(1900)
  • 4(1700/2100)
  • 12(700)
  • 17(700)
  • 28(700)
  • 40(2300) - LATAM
  • TW LTE band 1(2100)
  • 40(2300)
  • 41(2500) - India
Speed Unknown
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 2.0
  • 4.2
  • A2DP
  • LE
Harmful irradiation
  • SAR EU - 0.61 W/kg (head) 0.69 W/kg (body)
  • SAR EU - 0.29 W/kg (head) 0.61 W/kg (body)
Music and Audio
Music and Audio — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for A9 Dual, 5.1.
SpecificationA9 Dual5.1
Dop
  • Sensors Accelerometer
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass