alcatel OT-991 vs Sony Xperia acro S

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

    OT-991: 17.7 g lighter

    OT-991:
    131.3 g
    Xperia acro S:
    149 g
  • Width

    Xperia acro S: 2 mm narrower

    OT-991:
    68 mm
    Xperia acro S:
    66 mm
  • Screen diagonal

    OT-991: 0.3 in smaller diagonal

    OT-991:
    4 in
    Xperia acro S:
    4.3 in
  • Chipset

    OT-991:
    Mediatek MT6573 (65 nm)
    Xperia acro S:
    Qualcomm MSM8660 Snapdragon S3
  • Depth

    OT-991: 1.1 mm thinner

    OT-991:
    10.8 mm
    Xperia acro S:
    11.9 mm
  • Height

    OT-991: 4 mm shorter

    OT-991:
    122 mm
    Xperia acro S:
    126 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. OT-991

    Height:
    122 mm
    Width:
    68 mm +2 mm versus Xperia acro S
    Depth:
    10.8 mm
  2. 2. Xperia acro S

    Height:
    126 mm +4 mm versus OT-991
    Width:
    66 mm
    Depth:
    11.9 mm +1.1 mm versus OT-991

Weight

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

  1. 1. OT-991

    131.3 g

  2. 2. Xperia acro S

    149 g

    +17.7 g versus OT-991

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. OT-991

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    47.6 cm²
  2. 2. Xperia acro S

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

Xperia acro S has approximately 7% more rectangular screen area than OT-991.

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 OT-991, Xperia acro S, compared at the same storage capacity.
StorageOT-991Xperia acro S
11 GB Unknown 1 GB RAM
OT-991: Original memory entry

150 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. OT-991

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

2. Xperia acro S

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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. OT-991

    1500 mAh

  2. 2. Xperia acro S

    1900 mAh

    +400 mAh versus OT-991

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. OT-9912. Xperia acro S

Everyday essentials
Everyday essentials — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
Dimensions (HxWxD)
  • 122 Х 68 Х 10.8 mm
  • 126 Х 66 Х 11.9 mm
Weight
  • 131.3 g
  • 149 g
Technology
  • TFT
  • LED-backlit LCD
Screen size
  • 4" inch
  • 4.3" inch
Screen resolution
  • 320 x 480 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 150 MB
  • 11 GB
  • 1 GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Removable Li-Ion
  • 1900 mAh
  • Removable Li-Ion
Operating system OS
  • Android 2.3 (Gingerbread)
  • Android 2.3 (Gingerbread)
Chipset
  • Mediatek MT6573 (65 nm)
  • Qualcomm MSM8660 Snapdragon S3
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 47.6 cm2
  • 51.0 cm2
Screen format
  • 3:2 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 57.4%
  • 61.3%
PPI /points per inch/
  • 144 PPI
  • 342 PPI
Screen protection Unknown
  • Scratch-resistant glass
Camera and Video
Camera and Video — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
Rear camera, main
  • 3.15 MP
  • Single
  • 12 MP
  • Single
Camera specs
  • 3.15 MP
  • 12 MP
  • AF
Functions
  • LED flash
  • LED flash
  • panorama
Video
  • Yes
  • 720p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 1.3 MP
  • Single
Specifications Unknown
  • 1.3 MP
Performance

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

Performance — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
Processor CPU
  • 800 MHz Cortex-A9
  • Dual-core 1.5 GHz Scorpion
Graphics processor GPU
  • PowerVR SGX531
  • Adreno 220
Antutu 7 score * Unknown
  • 1345
GeekBench 4 RenderScript * Unknown
  • 311
General specs
General specs — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
Release date
  • 2012
  • February
  • 2012
  • May
Colors
  • Black
  • White
  • White
  • Black
  • Rouge
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 130 EUR
  • 280 EUR
Battery life
  • Stand by time- Up to 400 h Talking time- Up to 12 h (2G) / Up to 10 h (3G)
  • Stand by time- Up to 330 h Talking time- Up to 9 h 30 min Music play - Up to 26 h
Communication and Connectivity
Communication and Connectivity — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
SIM card
  • Mini-SIM
  • Micro-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA 10.2/5.76 Mbps
  • EV-DO Rev.A 3.1 Mbps
GPRS
  • Class 12
  • Yes
Edge
  • Class 12
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • DLNA
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • 2.1
  • A2DP
  • EDR
Harmful irradiation
  • SAR EU - 0.54 W/kg (head) 0.84 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
Radio
  • Stereo FM radio
  • RDS
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for OT-991, Xperia acro S.
SpecificationOT-991Xperia acro S
Dop
  • Sensors Accelerometer
  • proximity
  • compass - MP3/AAC+/WAV/WMA player -MP4/H.264 player -Document viewer -Photo viewer/editor -Organizer -Voice memo -Predictive text input
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Mobile FeliCa client -Digital TV and TV launcher -HDMI port -MP4/H.264/WMV player -MP3/eAAC+/WMA/WAV player -TrackID music recognition -Document viewer -Voice memo/dial/commands -Predictive text input - Water resistant - For Japan