Microsoft Lumia 640 LTE vs Nokia X6 (2018)

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

    Lumia 640 LTE: 6 g lighter

    Lumia 640 LTE:
    145 g
    X6 (2018):
    151 g
  • Width

    X6 (2018): 1.2 mm narrower

    Lumia 640 LTE:
    72.2 mm
    X6 (2018):
    71 mm
  • Screen diagonal

    Lumia 640 LTE: 0.8 in smaller diagonal

    Lumia 640 LTE:
    5 in
    X6 (2018):
    5.8 in
  • Chipset

    Lumia 640 LTE:
    Qualcomm MSM8926 Snapdragon 400 (28 nm)
    X6 (2018):
    Qualcomm SDM636 Snapdragon 636 (14 nm)
  • Rear camera layout

    Lumia 640 LTE:
    Single
    X6 (2018):
    Dual
  • Depth

    X6 (2018): 0.8 mm thinner

    Lumia 640 LTE:
    8.8 mm
    X6 (2018):
    8 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. Lumia 640 LTE

    Height:
    141.3 mm
    Width:
    72.2 mm +1.2 mm versus X6 (2018)
    Depth:
    8.8 mm +0.8 mm versus X6 (2018)
  2. 2. X6 (2018)

    Height:
    147.2 mm +5.9 mm versus Lumia 640 LTE
    Width:
    71 mm
    Depth:
    8 mm

Weight

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

  1. 1. Lumia 640 LTE

    145 g

  2. 2. X6 (2018)

    151 g

    +6 g versus Lumia 640 LTE

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. Lumia 640 LTE

    Screen diagonal:
    5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    68.9 cm²
  2. 2. X6 (2018)

    Screen diagonal:
    5.8 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    84 cm²

X6 (2018) has approximately 21.8% more rectangular screen area than Lumia 640 LTE.

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 Lumia 640 LTE, X6 (2018), compared at the same storage capacity.
StorageLumia 640 LTEX6 (2018)
8 GB 1 GB RAM Unknown
X6 (2018): Original memory entry

64 GB · 4 GB RAM (6.1 Plus)64 GB · 4/6 GB RAM 32 GB · 4 GB RAM (X6)

Practical features

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

1. Lumia 640 LTE

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

2. X6 (2018)

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 400 GB (uses SIM 2 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. Lumia 640 LTE

    2500 mAh

  2. 2. X6 (2018)

    3060 mAh

    +560 mAh versus Lumia 640 LTE

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. Lumia 640 LTE2. X6 (2018)

Everyday essentials
Everyday essentials — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
Dimensions (HxWxD)
  • 141.3 Х 72.2 Х 8.8 mm
  • 147.2 Х 71 Х 8 mm
Weight
  • 145 g
  • 151 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5" inch
  • 5.8" inch
Screen resolution
  • 720 x 1280 px
  • 1080 x 2280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 64 GB
  • 4 GB RAM (6.1 Plus)64 GB
  • 4/6 GB RAM 32 GB
  • 4 GB RAM (X6)
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSD
  • up to 400 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 2500 mAh
  • Removable Li-Ion
  • 3060 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows Phone 8.1
  • upgradable to Microsoft Windows 10
  • Android 8.1 (Oreo)
  • upgradable to Android 9.0 (Pie); Android One
Chipset
  • Qualcomm MSM8926 Snapdragon 400 (28 nm)
  • Qualcomm SDM636 Snapdragon 636 (14 nm)
NFC
  • Yes
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 68.9 cm2
  • 85.1 cm2
Screen format
  • 16:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 67.6%
  • 81.5%
PPI /points per inch/
  • 294 PPI
  • 432 PPI
Screen protection
  • Corning Gorilla Glass 3
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
Rear camera, main
  • 8 MP
  • Single
  • 16 MP
  • Dual
Camera specs
  • 8 MP
  • f/2.2
  • 28mm (wide)
  • 1/4''
  • AF
  • 16 MP
  • f/2.0
  • 1.0µm
  • PDAF -5 MP
  • f/2.4
  • 1.12µm
  • depth sensor
Functions
  • LED flash
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • 720p
  • 1080p@30fps
Front camera, selfie
  • 1 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 1 MP
  • 16 MP
  • f/2.0
  • 1/3.1''
  • 1.0µm
Performance
Performance — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
Processor CPU
  • Quad-core 1.2 GHz Cortex-A7
  • Octa-core 1.8 GHz Kryo 260
Graphics processor GPU
  • Adreno 305
  • Adreno 509
General specs
General specs — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
Release date
  • 2015
  • March
  • 2018
  • July
Colors
  • Glossy cyan
  • Orange
  • White
  • Matte Black
  • Black
  • Blue
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 120 EUR
  • 250 EUR
Battery life
  • Stand by time- Up to 864 h (2G) / Up to 864 h (3G) Talking time- Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G)
Unknown
Body build Unknown
  • Front/back glass (Gorilla Glass 3)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
SIM card
  • Micro-SIM
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 - T-Mobile -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 20(800) LTE band 1(2100)
  • 2(1900)
  • 4(1700/2100)
  • 5(850)
  • 12(700)
  • 17(700) - T-Mobile
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • 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
  • DLNA
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR EU - 0.94 W/kg (head) 1.82 W/kg (body)
Music and Audio
Music and Audio — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
Radio
  • FM radio
  • FM radio
Others
  • ClearBlack display
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Lumia 640 LTE, X6 (2018).
SpecificationLumia 640 LTEX6 (2018)
Dop
  • Sensors Accelerometer
  • proximity
  • compass
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging (Quick Charge 3.0) - Versions: Nokia 6.1 Plus (Global); Nokia X6 (China)