Icemobile Crystal vs Yezz Epic T

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

    Crystal: 30.3 mm narrower

    Crystal:
    56.2 mm
    Epic T:
    86.5 mm
  • Screen diagonal

    Crystal: 2 in smaller diagonal

    Crystal:
    3.5 in
    Epic T:
    5.5 in
  • Chipset

    Crystal:
    Mediatek MT6516
    Epic T:
    Mediatek MT6750 (28 nm)
  • Depth

    Crystal: 2.8 mm thinner

    Crystal:
    13.1 mm
    Epic T:
    15.9 mm
  • Height

    Crystal: 57.3 mm shorter

    Crystal:
    111.5 mm
    Epic T:
    168.8 mm
  • Release year

    Crystal:
    2011
    Epic T:
    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. Crystal

    Height:
    111.5 mm
    Width:
    56.2 mm
    Depth:
    13.1 mm
    Weight:
    Unknown
  2. 2. Epic T

    Height:
    168.8 mm +57.3 mm versus Crystal
    Width:
    86.5 mm +30.3 mm versus Crystal
    Depth:
    15.9 mm +2.8 mm versus Crystal
    Weight:
    469 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. Crystal

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    34.9 cm²
  2. 2. Epic T

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

Epic T has approximately 139.2% more rectangular screen area than Crystal.

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 Crystal, Epic T, compared at the same storage capacity.
StorageCrystalEpic T
32 GB Unknown 3 GB RAM
Crystal: Original memory entry

512 MB + 256 MB

Practical features

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

1. Crystal

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 2 GB (dedicated slot)

2. Epic T

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. Crystal

    1050 mAh

  2. 2. Epic T

    9000 mAh

    +7950 mAh versus Crystal

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. Crystal2. Epic T

Everyday essentials
Everyday essentials — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
Dimensions (HxWxD)
  • 111.5 Х 56.2 Х 13.1 mm
  • 168.8 Х 86.5 Х 15.9 mm
Weight
  • 0 g
  • 469 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 3.5" inch
  • 5.5" inch
Screen resolution
  • 240 x 400 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB + 256 MB
  • 32 GB
  • 3 GB RAM
Memory card support
  • microSD
  • up to 2 GB (dedicated slot)
  • microSD
  • up to 128 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1050 mAh
  • Removable Li-Ion
  • 9000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 2.2 (Froyo)
  • Android 7.0 (Nougat)
Chipset
  • Mediatek MT6516
  • Mediatek MT6750 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
Touchscreen
  • touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 34.9 cm2
  • 83.4 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 55.6%
  • 57.1%
PPI /points per inch/
  • 133 PPI
  • 401 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
Rear camera, main
  • 1.3 MP
  • Single
  • 16 MP
  • Single
Camera specs
  • 1.3 MP
  • 16 MP
  • AF
Functions
  • LED flash
  • LED flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@60fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 8 MP
  • Single
Specifications Unknown
  • 8 MP
Performance

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

Performance — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
Processor CPU
  • 416 MHz
  • Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Graphics processor GPU Unknown
  • Mali-T860MP2
Antutu 7 score * Unknown
  • 38602
General specs
General specs — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
Release date
  • 2011
  • February
  • 2018
  • March
Colors
  • Black
  • White
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 250 EUR
Battery life
  • Stand by time- Up to 180 h Talking time- Up to 5 h
  • Stand by time- Up to 650 h (3G) Talking time- Up to 30 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
SIM card
  • Dual SIM (Mini-SIM
  • dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network Unknown
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 1900 / 2100 -4G - LTE band 2(1900)
  • 4(1700/2100)
  • 7(2600)
  • 17(700)
  • 28(700)
Speed Unknown
  • HSPA 42.2/11.5 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • No
  • Yes
Wi-Fi
  • Wi-Fi 802.11
  • 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
  • Yes
  • 4.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
Radio
  • Stereo FM radio
  • FM radio
Other features
Other features — specifications for Crystal, Epic T.
SpecificationCrystalEpic T
Dop
  • Sensors Accelerometer TV app -Organizer -MP4/H.264 player -MP3/AAC+ player -Predictive text input Trackball -Flashlight
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging - IP68 dust/water proof (up to 1.5m for 30 mins) -MIL-STD-810G compliant -Flashlight