A1 Smart N9 vs Plum Check Plus

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.

  • Width

    Check Plus: 5.4 mm narrower

    Smart N9:
    68.8 mm
    Check Plus:
    63.4 mm
  • Screen diagonal

    Check Plus: 1 in smaller diagonal

    Smart N9:
    5.5 in
    Check Plus:
    4.5 in
  • Chipset

    Smart N9:
    Mediatek MT6739WA (28 nm)
    Check Plus:
    Mediatek MT6572M (28 nm)
  • Depth

    Smart N9: 0.5 mm thinner

    Smart N9:
    8.7 mm
    Check Plus:
    9.2 mm
  • Height

    Check Plus: 17.1 mm shorter

    Smart N9:
    147.1 mm
    Check Plus:
    130 mm
  • Release year

    Smart N9:
    2018
    Check Plus:
    2014

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. Smart N9

    Height:
    147.1 mm +17.1 mm versus Check Plus
    Width:
    68.8 mm +5.4 mm versus Check Plus
    Depth:
    8.7 mm
  2. 2. Check Plus

    Height:
    130 mm
    Width:
    63.4 mm
    Depth:
    9.2 mm +0.5 mm versus Smart N9

Weight

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

  1. 1. Smart N9

    145 g

    +3 g versus Check Plus

  2. 2. Check Plus

    142 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. Smart N9

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

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

Smart N9 has approximately 39.8% more rectangular screen area than Check Plus.

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 Smart N9, Check Plus, compared at the same storage capacity.
StorageSmart N9Check Plus
16 GB 2 GB RAM Unknown
Check Plus: Original memory entry

4 GB · 512 MB 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. Smart N9

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

2. Check Plus

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 64 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. Smart N9

    2900 mAh

    +1400 mAh versus Check Plus

  2. 2. Check Plus

    1500 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. Smart N92. Check Plus

Everyday essentials
Everyday essentials — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
Dimensions (HxWxD)
  • 147.1 Х 68.8 Х 8.7 mm
  • 130 Х 63.4 Х 9.2 mm
Weight
  • 145 g
  • 142 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.5" inch
  • 4.5" inch
Screen resolution
  • 720 x 1440 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16GB 2GB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 64 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2900 mAh
  • Non-removable Li-Ion
  • 1500 mAh
  • Removable Li-Ion
Operating system OS
  • Android 8.1 (Oreo)
  • Android 4.2.2 (Jelly Bean)
Chipset
  • Mediatek MT6739WA (28 nm)
  • Mediatek MT6572M (28 nm)
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 78.1 cm2
  • 55.8 cm2
Screen format
  • 18:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 77.1%
  • 67.7%
PPI /points per inch/
  • 293 PPI
  • 218 PPI
Camera and Video
Camera and Video — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
Rear camera, main
  • 13 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 13 MP
  • AF
  • 5 MP
  • AF
Functions
  • LED flash
  • LED flash
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 720p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 2 MP
  • Single
Specifications
  • 8 MP
  • 2 MP
  • AF
Performance

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

Performance — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
Processor CPU
  • Quad-core 1.3 GHz Cortex-A53
  • Dual-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Mali-T720MP2
  • Mali-400
Antutu 7 score * Unknown
  • 5784
General specs
General specs — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
Release date
  • 2018
  • June
  • 2014
  • May
Colors
  • Silver Aluminium
  • Black Titanium
  • White/Blue
  • White/Red
  • Black/black
  • Black/Lime
  • Black/Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 120 EUR
Unknown
Battery life Unknown
  • Stand by time- Up to 750 h (2G) / Up to 650 h (3G) Talking time- Up to 17 h (2G) / Up to 14 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
SIM card
  • Nano-SIM
  • Dual SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA -4G - LTE (unspecified)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA
  • LTE Cat4 150/50 Mbps
  • HSPA 21.1/5.76 Mbps
GPRS
  • Yes
  • Class 12
Edge
  • Yes
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • 4.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.96 W/kg (head) 1.56 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for Smart N9, Check Plus.
SpecificationSmart N9Check Plus
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Sensors Accelerometer
  • gyro
  • proximity - Also known as Plum Z450