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alcatel Fire E vs LG K51S

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

    Fire E: 13.2 mm narrower

    Fire E:
    63.5 mm
    K51S:
    76.7 mm
  • Screen diagonal

    Fire E: 2 in smaller diagonal

    Fire E:
    4.5 in
    K51S:
    6.5 in
  • Rear camera layout

    Fire E:
    Single
    K51S:
    Quad
  • Height

    Fire E: 36.2 mm shorter

    Fire E:
    129 mm
    K51S:
    165.2 mm
  • Release year

    Fire E:
    2014
    K51S:
    2020

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. Fire E

    Height:
    129 mm
    Width:
    63.5 mm
    Depth:
    8.2 mm
    Weight:
    103 g
  2. 2. K51S

    Height:
    165.2 mm +36.2 mm versus Fire E
    Width:
    76.7 mm +13.2 mm versus Fire E
    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. Fire E

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 cm²
  2. 2. K51S

    Screen diagonal:
    6.5 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    102 cm²

K51S has approximately 82.7% more rectangular screen area than Fire E.

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 Fire E, K51S, compared at the same storage capacity.
StorageFire EK51S
64 GB Unknown 3 GB RAM
Fire E: 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. Fire E

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

2. K51S

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSDXC (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. Fire E

    1700 mAh

  2. 2. K51S

    4000 mAh

    +2300 mAh versus Fire E

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. Fire E2. K51S

Everyday essentials
Everyday essentials — specifications for Fire E, K51S.
SpecificationFire EK51S
Dimensions (HxWxD)
  • 129 Х 63.5 Х 8.2 mm
  • 165.2 Х 76.7 Х 8.2 mm
Weight
  • 103 g
  • 0 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 4.5" inch
  • 6.5" inch
Screen resolution
  • 540 x 960 px
  • 720 x 1600 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 64GB 3GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1700 mAh
  • Removable Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Firefox OS 1.3
  • Android 10.0
NFC Unknown
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Fire E, K51S.
SpecificationFire EK51S
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 55.8 cm2
  • 102.0 cm2
Screen format
  • 16:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 68.1%
  • 80.5%
PPI /points per inch/
  • 245 PPI
  • 270 PPI
Camera and Video
Camera and Video — specifications for Fire E, K51S.
SpecificationFire EK51S
Rear camera, main
  • 5 MP
  • Single
  • 32 MP
  • Quad
Camera specs
  • 5 MP
  • AF
  • 32 MP
  • (wide)
  • PDAF -5 MP
  • (ultrawide) -2 MP (macro) -2 MP (depth)
Functions
  • LED flash
  • HDR
  • LED flash
  • panorama
  • HDR
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 13 MP
  • Single
Specifications
  • VGA
  • 13 MP
Performance
Performance — specifications for Fire E, K51S.
SpecificationFire EK51S
Processor CPU
  • Dual-core 1.2 GHz
  • Octa-core 2.3 GHz
General specs
General specs — specifications for Fire E, K51S.
SpecificationFire EK51S
Release date
  • 2014
  • February
  • 2020
  • February 18
Colors
  • Slate
  • Dark Chocolate
  • Mozilla Orange
  • Titanium
  • Pink
  • Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 70 EUR
Unknown
Battery life
  • Stand by time- Up to 450 h (2G) / Up to 400 h (3G) Talking time- Up to 7 h (2G) / Up to 4 h (3G) Music play - Up to 25 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Fire E, K51S.
SpecificationFire EK51S
SIM card
  • Micro-SIM
  • Single SIM (Nano-SIM)Dual 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 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE (unspecified)
Speed
  • HSPA 42.2/5.76 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 3.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Fire E, K51S.
SpecificationFire EK51S
Radio
  • FM radio
  • RDS
  • No
Other features
Other features — specifications for Fire E, K51S.
SpecificationFire EK51S
Dop
  • Sensors Accelerometer
  • proximity
  • compass - MP3/AAC+/WAV player -MP4/H.264 player -Photo viewer -Predictive text input
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - MIL-STD-810G compliant