Nokia N91 vs Xolo Black

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

    N91: 21.4 mm narrower

    N91:
    55.2 mm
    Black:
    76.6 mm
  • Screen diagonal

    N91: 3.4 in smaller diagonal

    N91:
    2.1 in
    Black:
    5.5 in
  • Rear camera layout

    N91:
    Single
    Black:
    Dual
  • Depth

    Black: 14.7 mm thinner

    N91:
    22 mm
    Black:
    7.3 mm
  • Height

    N91: 42.4 mm shorter

    N91:
    113.1 mm
    Black:
    155.5 mm
  • Release year

    N91:
    2005
    Black:
    2015

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. N91

    Height:
    113.1 mm
    Width:
    55.2 mm
    Depth:
    22 mm +14.7 mm versus Black
    Weight:
    164 g
  2. 2. Black

    Height:
    155.5 mm +42.4 mm versus N91
    Width:
    76.6 mm +21.4 mm versus N91
    Depth:
    7.3 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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. N91

    N91: Screen geometry unavailable or conflicting.

  2. 2. Black

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

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 N91, Black, compared at the same storage capacity.
StorageN91Black
16 GB Unknown 2 GB RAM
N91: Original memory entry

4/8 GB · 64 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. N91

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

2. Black

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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. N91

    900 mAh

  2. 2. Black

    3200 mAh

    +2300 mAh versus N91

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. N912. Black

Everyday essentials
Everyday essentials — specifications for N91, Black.
SpecificationN91Black
Dimensions (HxWxD)
  • 113.1 Х 55.2 Х 22 mm
  • 155.5 Х 76.6 Х 7.3 mm
Weight
  • 164 g
  • 0 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.1" inch
  • 5.5" inch
Screen resolution
  • 176 x 208 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4/8 GB
  • 64 MB RAM
  • 16 GB
  • 2 GB RAM
Memory card support
  • No
  • microSD
  • up to 32 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 900 mAh
  • Removable Li-Ion
  • 3200 mAh
  • Non-removable Li-Po
Operating system OS
  • Symbian 9.1
  • Series 60 UI 3rd Edition
  • Android 5.0 (Lollipop); HIVE Atlas UI
Chipset Unknown
  • Qualcomm MSM8939 Snapdragon 615 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for N91, Black.
SpecificationN91Black
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 14.0 cm2
  • 82.6 cm2
Screen format Unknown
  • 16:9 (height:width)
Screen to body ratio
  • 22.5%
  • 69.3%
PPI /points per inch/
  • 0 PPI
  • 403 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for N91, Black.
SpecificationN91Black
Rear camera, main
  • 2 MP
  • Single
  • 13 MP
  • Dual
Camera specs
  • 2 MP
  • 13 MP
  • AF -2 MP
  • depth sensor
Functions Unknown
  • LED flash
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 5 MP
  • Single
Specifications Unknown
  • 5 MP
Performance

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

Performance — specifications for N91, Black.
SpecificationN91Black
Processor CPU
  • 220 MHz Dual ARM 9
  • Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Graphics processor GPU Unknown
  • Adreno 405
Antutu 7 score * Unknown
  • 30156
General specs
General specs — specifications for N91, Black.
SpecificationN91Black
Release date
  • 2005
  • Q2
  • 2015
  • July
Colors
  • Light Blue Chrome
  • Dark Gray Chrome
  • Black (Music Edition)
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 230 EUR
  • 180 EUR
Battery life
  • Stand by time- Up to 190 h (2G) / 170 h (3G) Talking time- Up to 4 h (2G) / 3 h (3G) Music play - Up to 10 h
  • Stand by time- Up to 736 h (2G) / Up to 699 h (3G) Talking time- Up to 36 h (2G) / Up to 24 h (3G)
Body build Unknown
  • Front/back glass (Gorilla Glass 3)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for N91, Black.
SpecificationN91Black
SIM card
  • Mini-SIM
  • Hybrid Dual SIM (Micro-SIM/Nano-SIM)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE 1800 TD-LTE 2300
Speed
  • Yes
  • 384 kbps
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
USB
  • miniUSB 2.0
  • microUSB 2.0
Bluetooth
  • 1.2 (A2DP - 8 GB version only)
  • 4.0
  • A2DP
Harmful irradiation
  • SAR - 0.74 W/kg (head) 0.58 W/kg (body) SAR EU - 0.48 W/kg (head)
  • SAR EU - 0.13 W/kg (head) 0.27 W/kg (body)
Music and Audio
Music and Audio — specifications for N91, Black.
SpecificationN91Black
Radio
  • Stereo FM radio
  • FM radio
Others
  • 5-way configurable navigation key
Unknown
Other features
Other features — specifications for N91, Black.
SpecificationN91Black
Dop
  • Predictive text input -Voice dial -Voice memo -Organizer
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass - For India