Oppo A91 vs Xiaomi MI-2a: specs comparison

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.

Display technology

OLED versus LCD

A91:

OLED

MI-2a:

LCD
Weight

MI-2a: 39 g lighter

A91:

172 g

MI-2a:

133 g
Width

MI-2a: 6.8 mm narrower

A91:

73.3 mm

MI-2a:

66.5 mm
Screen diagonal

MI-2a: 1.9 in smaller diagonal

A91:

6.4 in

MI-2a:

4.5 in
Rear camera layout

A91:

Quad

MI-2a:

Single
Depth

A91: 1.6 mm thinner

A91:

7.9 mm

MI-2a:

9.5 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. A91

Height:

160.2 mm +27.2 mm versus MI-2a
Width:

73.3 mm +6.8 mm versus MI-2a
Depth:

7.9 mm
2. MI-2a

Height:

133 mm
Width:

66.5 mm
Depth:

9.5 mm +1.6 mm versus A91

Weight

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

1. A91

172 g

+39 g versus MI-2a
2. MI-2a

133 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. A91

Screen diagonal:

6.4 in

Aspect ratio (height:width):

20:9

Approximate rectangular screen area:

98.9 cm²
2. MI-2a

Screen diagonal:

4.5 in

Aspect ratio (height:width):

16:9

Approximate rectangular screen area:

55.8 cm²

A91 has approximately 77.1% more rectangular screen area than MI-2a.

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 A91, MI-2a, compared at the same storage capacity.
Storage	A91	MI-2a
16 GB	Not recorded	1 GB RAM
128 GB	8 GB RAM	Not recorded

Practical features

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

1. A91

NFC:: Unknown
Headphone jack:: Yes
Memory card support:: See details microSD · up to 256 GB (dedicated slot)

2. MI-2a

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

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. A91

4025 mAh

+1995 mAh versus MI-2a
2. MI-2a

2030 mAh

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. A912. MI-2a

Everyday essentials

Everyday essentials — specifications for A91, MI-2a.
Specification	A91	MI-2a
Dimensions (HxWxD)	160.2 Х 73.3 Х 7.9 mm	133 Х 66.5 Х 9.5 mm
Weight	172 g	133 g
Technology	AMOLED	IPS LCD
Screen size	6.4" inch	4.5" inch
Screen resolution	1080 x 2400 px	720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	128GB 8GB RAM	16 GB 1 GB RAM
Memory card support	microSD up to 256 GB (dedicated slot)	No
Battery Capacity is not battery life. No endurance test is implied.	4025 mAh Non-removable Li-Po	2030 mAh Removable Li-Ion
Operating system OS	Android 9.0 (Pie); ColorOS 6.1	Android 4.1 (Jelly Bean)
Chipset	Mediatek MT6771V Helio P70 (12nm)	Xiaolong S4 Pro
NFC	Unknown	Yes
Headphone jack	Yes	Yes

Display

Display — specifications for A91, MI-2a.
Specification	A91	MI-2a
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	100.4 cm2	55.8 cm2
Screen format	20:9 (height:width)	16:9 (height:width)
Screen to body ratio	85.5%	63.1%
PPI /points per inch/	408 PPI	326 PPI
Screen protection	Corning Gorilla Glass 5	Unknown

Camera and Video

Camera and Video — specifications for A91, MI-2a.
Specification	A91	MI-2a
Rear camera, main	48 MP Quad	8 MP Single
Camera specs	48 MP f/1.8 26mm (wide) 1/2.0" 0.8µm PDAF -8 MP f/2.2 13mm (ultrawide) 1/4.0" 1.12µm -2 MP B/W f/2.4 1/5.0" 1.75µm -2 MP 1.75µm depth sensor	8 MP AF f/2.0
Functions	HDR	LED flash HDR
Video	1080p@30fps	1080p@30fps
Front camera, selfie	16 MP Single	2 MP Single
Specifications	16 MP f/2.0 26mm (wide) 1/3.1'' 1.0µm	2 MP

Performance

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

Performance — specifications for A91, MI-2a.
Specification	A91	MI-2a
Processor CPU	Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)	Dual-core 1.7 GHz
Graphics processor GPU	Mali-G72 MP3	Adreno 320
Antutu 7 score *	135756	21326
GeekBench 4 Single Core *	Unknown	742
GeekBench 4 Multi-Core *	Unknown	1151
GeekBench 4 RenderScript *	Unknown	1277

General specs

General specs — specifications for A91, MI-2a.
Specification	A91	MI-2a
Release date	2019 December	2013
Colors	Dark Blue Red Blue	Black (front panel) 4 color options (back panel)
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.	260 EUR	Unknown
Body build	Glass front (Gorilla Glass 5) plastic back plastic frame	Unknown

Communication and Connectivity

Communication and Connectivity — specifications for A91, MI-2a.
Specification	A91	MI-2a
SIM card	Dual SIM (Nano-SIM dual stand-by)	Mini-SIM
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100) 3(1800) 4(1700/2100) 5(850) 8(900) 34(2000) 38(2600) 39(1900) 40(2300) 41(2500)	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed	HSPA 42.2/11.5 Mbps LTE-A	HSPA 21.1/5.76 Mbps
GPRS	Yes	Class 12
Edge	Yes	Class 12
Wi-Fi	Wi-Fi 802.11 a/b/g/n/ac/ax dual-band Wi-Fi Direct hotspot	Wi-Fi 802.11 b/g/n Wi-Fi Direct hotspot
GPS	Yes with A-GPS GLONASS BDS	Yes with A-GPS GLONASS
USB	2.0 Type-C 1.0 reversible connector USB On-The-Go	microUSB 2.0 USB Host
Bluetooth	4.2 A2DP LE	4.0 A2DP

Music and Audio

Music and Audio — specifications for A91, MI-2a.
Specification	A91	MI-2a
Radio	FM radio	FM radio
Others	430 nits typ. brightness Active noise cancellation with dedicated mic	Active noise cancellation with dedicated mic

Other features

Other features — specifications for A91, MI-2a.
Specification	A91	MI-2a
Dop	Sensors Fingerprint (under display optical) accelerometer gyro proximity compass - Fast charging 20W 50% in 30 min -VOOC 3.0	Sensors Accelerometer gyro proximity compass

Oppo A91 vs Xiaomi MI-2a

Oppo A91

Xiaomi MI-2a

Key differences