Infinix Zero 4 vs Oppo A91

Compare recorded specifications, size and practical differences.

Infinix Zero 4

Replace Zero 4

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Oppo A91

Replace A91

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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.

Display technologyOLED versus LCDZero 4: LCD · A91: OLED
WidthA91: 2.7 mm narrowerA91: 73.3 mm · Zero 4: 76 mm
Screen diagonalZero 4: 0.9 in smaller diagonalZero 4: 5.5 in · A91: 6.4 in
ChipsetMediatek MT6753 (28 nm) / Mediatek MT6771V Helio P70 (12nm)Zero 4: Mediatek MT6753 (28 nm) · A91: Mediatek MT6771V Helio P70 (12nm)
Rear camera layoutSingle / QuadZero 4: Single · A91: Quad
HeightZero 4: 8.7 mm shorterZero 4: 151.5 mm · A91: 160.2 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.

Front

Side

1. Zero 4
Height
151.5 mm
Width
76 mm
Depth
7.8 mm

Weight
167.5 g
2. A91
Height
160.2 mm
Width
73.3 mm
Depth
7.9 mm

Weight
172 g

Specifications

Open a section for more detail. Scroll inside a table to keep phone names visible; on narrow screens, swipe sideways or use the arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

Everyday essentials

Everyday essentials
Specification	Zero 4	A91
Dimensions (HxWxD)	151.5 Х 76 Х 7.8 mm	160.2 Х 73.3 Х 7.9 mm
Weight	167.5 g	172 g
Technology	IPS LCD	AMOLED
Screen size	5.5" inch	6.4" inch
Screen resolution	1080 x 1920 px	1080 x 2400 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.	32 GB 3 GB RAM	128GB 8GB RAM
Memory card support	microSD up to 128 GB (dedicated slot)	microSD up to 256 GB (dedicated slot)
BatteryCapacity is not battery life. No endurance test is implied.	3200 mAh Non-removable Li-Ion	4025 mAh Non-removable Li-Po
Operating system OS	Android 6.0 (Marshmallow)	Android 9.0 (Pie); ColorOS 6.1
Chipset	Mediatek MT6753 (28 nm)	Mediatek MT6771V Helio P70 (12nm)
Headphone jack	Yes	Yes

Display

Display
Specification	Zero 4	A91
Touchscreen	capacitive touchscreen	capacitive touchscreen
Display colors	16M	16M
Screen area	83.4 cm2	100.4 cm2
Screen format	16:9 (height:width)	20:9 (height:width)
Screen to body ratio	72.4%	85.5%
PPI /points per inch/	401 PPI	408 PPI
Screen protection	Corning Gorilla Glass 3	Corning Gorilla Glass 5

Camera and Video

Camera and Video
Specification	Zero 4	A91
Rear camera, main	16 MP Single	48 MP Quad
Camera specs	16 MP f/2.0 OIS Laser AF/ PDAF	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
Functions	LED flash	HDR
Video	1080p@30fps	1080p@30fps
Front camera, selfie	8 MP Single	16 MP Single
Specifications	8 MP f/2.2	16 MP f/2.0 26mm (wide) 1/3.1'' 1.0µm

Performance

Performance
Specification	Zero 4	A91
Processor CPU	Octa-core 1.3 GHz Cortex-A53	Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Graphics processor GPU	Mali-T720MP3	Mali-G72 MP3
Antutu 7 scoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	22135	135756
GeekBench 4 Single CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	632	Unknown
GeekBench 4 Multi-CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	2913	Unknown
GeekBench 5 Single CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	110	Unknown
GeekBench 5 Multi-CoreLegacy recorded score. Test conditions are unspecified; no new testing is implied.	418	Unknown

General specs

General specs
Specification	Zero 4	A91
Release date	2017 March	2019 December
Colors	Anthracite Grey Champagne Gold Barbie Pink Filber Brown	Dark Blue Red Blue
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.	Unknown	260 EUR
Body build	Unknown	Glass front (Gorilla Glass 5) plastic back plastic frame

Communication and Connectivity

Communication and Connectivity
Specification	Zero 4	A91
SIM card	Dual SIM (Micro-SIM dual stand-by)	Dual SIM (Nano-SIM dual stand-by)
Network	Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 HSDPA 850 / 1700 / 1900 / 2100 -4G - LTE band 1(2100) 3(1800) 5(850) 7(2600) 8(900) 20(800) 38(2600) 40(2300) LTE band 2(1900) 4(1700/2100) 28(700)	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)
Speed	HSPA 42.2/5.76 Mbps LTE Cat4 150/50 Mbps	HSPA 42.2/11.5 Mbps LTE-A
GPRS	Yes	Yes
Edge	Yes	Yes
Wi-Fi	Wi-Fi 802.11 b/g/n WiFi Direct hotspot	Wi-Fi 802.11 a/b/g/n/ac/ax dual-band Wi-Fi Direct hotspot
GPS	Yes with A-GPS	Yes with A-GPS GLONASS BDS
USB	microUSB 2.0 USB On-The-Go	2.0 Type-C 1.0 reversible connector USB On-The-Go
Bluetooth	4.0 A2DP LE	4.2 A2DP LE

Music and Audio

Music and Audio
Specification	Zero 4	A91
Radio	FM radio	FM radio
Others	Unknown	430 nits typ. brightness Active noise cancellation with dedicated mic

Other features

Other features
Specification	Zero 4	A91
Dop	Sensors Fingerprint (rear-mounted) accelerometer gyro proximity compass	Sensors Fingerprint (under display optical) accelerometer gyro proximity compass - Fast charging 20W 50% in 30 min -VOOC 3.0