T-Mobile MDA Compact IV vs Vertu Signature Touch (2015)

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

    MDA Compact IV: 127 g lighter

    MDA Compact IV:
    98 g
    Signature Touch (2015):
    225 g
  • Width

    MDA Compact IV: 22 mm narrower

    MDA Compact IV:
    52 mm
    Signature Touch (2015):
    74 mm
  • Screen diagonal

    MDA Compact IV: 2.4 in smaller diagonal

    MDA Compact IV:
    2.8 in
    Signature Touch (2015):
    5.2 in
  • Chipset

    MDA Compact IV:
    Qualcomm MSM7201A
    Signature Touch (2015):
    Qualcomm MSM8994 Snapdragon 810 (20 nm)
  • Depth

    Signature Touch (2015): 1.2 mm thinner

    MDA Compact IV:
    12 mm
    Signature Touch (2015):
    10.8 mm
  • Height

    MDA Compact IV: 45 mm shorter

    MDA Compact IV:
    110 mm
    Signature Touch (2015):
    155 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. MDA Compact IV

    Height:
    110 mm
    Width:
    52 mm
    Depth:
    12 mm +1.2 mm versus Signature Touch (2015)
  2. 2. Signature Touch (2015)

    Height:
    155 mm +45 mm versus MDA Compact IV
    Width:
    74 mm +22 mm versus MDA Compact IV
    Depth:
    10.8 mm

Weight

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

  1. 1. MDA Compact IV

    98 g

  2. 2. Signature Touch (2015)

    225 g

    +127 g versus MDA Compact IV

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. MDA Compact IV

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Signature Touch (2015)

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

Signature Touch (2015) has approximately 207% more rectangular screen area than MDA Compact IV.

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.

MDA Compact IV: Original memory entry

4 GB · 128 MB RAM · 256 MB ROM

Signature Touch (2015): Original memory entry

64 GB · 512GB 4GB

Practical features

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

1. MDA Compact IV

NFC:
Unknown
Headphone jack:
No
Memory card support:
No

2. Signature Touch (2015)

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. MDA Compact IV

    900 mAh

  2. 2. Signature Touch (2015)

    3160 mAh

    +2260 mAh versus MDA Compact IV

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. MDA Compact IV2. Signature Touch (2015)

Everyday essentials
Everyday essentials — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
Dimensions (HxWxD)
  • 110 Х 52 Х 12 mm
  • 155 Х 74 Х 10.8 mm
Weight
  • 98 g
  • 225 g
Technology
  • TFT
  • Sapphire crystal glass
Screen size
  • 2.8" inch
  • 5.2" inch
Screen resolution
  • 480 x 640 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 128 MB RAM
  • 256 MB ROM
  • 64 GB
  • 512GB 4GB
Memory card support
  • No
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 900 mAh
  • Removable Li-Ion
  • 3160 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 5.1 (Lollipop)
Chipset
  • Qualcomm MSM7201A
  • Qualcomm MSM8994 Snapdragon 810 (20 nm)
NFC Unknown
  • Yes
Headphone jack
  • No
  • Yes
Display
Display — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 74.5 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 42.4%
  • 65.0%
PPI /points per inch/
  • 286 PPI
  • 424 PPI
Screen protection Unknown
  • Sapphire crystal glass
Camera and Video
Camera and Video — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
Rear camera, main
  • 3.15 MP
  • Single
  • 21 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 21 MP
  • PDAF
Functions Unknown
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • CIF@30fps
  • Yes
Front camera, selfie
  • 0.3 MP
  • Single
  • 2.1 MP
  • Single
Specifications
  • VGA videocall camera
  • 2.1 MP
Performance
Performance — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
Processor CPU
  • 528 MHz ARM 11
  • Octa-core (4x1.56 GHz Cortex-A53 & 4x1.82 GHz Cortex-A57)
Graphics processor GPU
  • Adreno 130
  • Adreno 430
General specs
General specs — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
Release date
  • 2008
  • May
  • 2015
  • September
Colors
  • Black
  • Jet Calf
  • Garnet Calf
  • Grape Lizard
  • Pure Jet Lizard
  • Jet Alligator
  • Pure Navy Alligator
  • Clous de Paris Alligator
  • Pure Jet Red Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 9000 EUR
Battery life
  • Stand by time- Up to 285 h Talking time- Up to 5 h 30 min
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
SIM card
  • Mini-SIM
  • Micro-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 TD-SCDMA -4G - LTE band 1(2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 13(700)
  • 17(700)
  • 20(800)
  • 25(1900)
  • 28(700)
  • 29(700)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
GPRS
  • Class 12
  • Yes
Edge
  • Class 12
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • miniUSB
  • microUSB 2.0 (MHL)
  • USB Host
Bluetooth
  • 2.0
  • A2DP
  • 4.0
  • A2DP
  • LE
  • aptX
Harmful irradiation
  • SAR - 1.33 W/kg (head) 1.44 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
Radio
  • Stereo FM radio
  • RDS
  • No
Others
  • TouchFLO 3D finger swipe navigation -Handwriting recognition
  • Dolby Digital Plus audio enhancement -Active noise cancellation with dedicated mic
Other features
Other features — specifications for MDA Compact IV, Signature Touch (2015).
SpecificationMDA Compact IVSignature Touch (2015)
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player -Predictive text input
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging (Quick Charge 2.0) -Qi wireless charging - Titanium body (forged grade 5) and luxurious calf leather covered rear panel