Compare Oppo A91 VS Xiaomi Redmi K30 4G

Oppo A91 is equipped with Helio P70 SoC, 8 GB + 128 GB memory, 6.4" AMOLED display, 4025 mAh battery with 30W fast charging, quad rear camera with 48 MP main sensor + 8 MP ultra-wide + 2 MP macro and 2 MP depth-sensing, 16 MP front camera, and 281 $ price on launch.

While Xiaom Redmi K30 4G is equipped with Snapdragon 730G SoC, 6 GB + 64 GB or 6 GB + 128 GB or 8 GB + 128 GB or 8 GB + 256 GB memory, 6.67" Super AMOLED display with a 120 Hz screen refreshment, 4500 mAh battery with 27W fast charging, quad rear camera with 64 MP main sensor + 8 MP ultra-wide + 2 MP depth-sensing and 2 MP macro, 20 MP + 2 MP (depth-sensing) dual front camera, and 230 $ start price on launch.

Here’s an in-depth specifications comparison between Oppo a91 and Xiaomi Redmi K30 4G.

Jump to:

1. Operating System  Comparison
2. System  on  Chip (SOC)  Comparison
3. RAM Comparison
4. Storage  Comparison
5. Display Comparison
6. Launch Date Comparison
7. Price  Comparison
8. Sensors  Comparison
9. Rear Camera Comparison
10. Front Camera Comparison
11. Tracking /  Positioning  Comparison
12. Wi-Fi  Comparison
13. Bluetooth  Comparison
14. USB Comparison
15. Connectivity  Comparison
16. Audio File Formats /  Codecs Comparison
17. Video File Formats /  Codecs Comparison
18. Battery  Comparison
19. Design  Comparison 
20. SIM Card  Comparison
21. Networks  Comparison
22. Mobile Network Technology and Bandwidth Comparison

Oppo A91	Xiaomi Redmi K30 4G
Brand and Model	Brand and Model
Brand	Brand
OPPO	Xiaomi
Model	Model
A91	Redmi K30 4G
Model Alias	Model Alias
PCPM00	M1912G7BE
PCPT00	M1912G7BC
A91 Operating System (OS)	Redmi K30 4G Operating System (OS)
ColorOS 6.1 (Android 9.0 Pie)	MIUI 11 (Android 10)
A91 System on  Chip (SOC)	Redmi K30 4G System on  Chip (SOC)
SOC	SOC
Media Tek Helio P70 (MT6771V/CT)	Qualcomm Snapdragon 730G
Process Technology	Process Technology
12 nm	8 nm
CPU	CPU
4x 2.1 GHz ARM Cortex-A73	2x 2.2 GHz Kryo 470
4x 2.0 GHz ARM Cortex-A53	6x 1.8 Ghz Kryo 470
CPU Bits	CPU Bits
64 bits	64 bits
Instruction Set	Instruction Set
ARMv8-A	ARMv8
CPU Frequency	CPU Frequency
2100 MHz	2200 MHz
CPU Cores	CPU Cores
8	8
GPU	GPU
ARM Mali-G72 MP3	Qualcomm Adreno 618
GPU Cores	GPU Cores
3
GPU Frequency	GPU Frequency
900 MHz
A91 RAM Capacity	Redmi K30 4G RAM Capacity
	6 GB
8 GB	8 GB
RAM Type	RAM Type
LPDDR4X	LPDDR4X
RAM Channels	RAM Channels
Double Channel	Double channel
RAM Frequency	RAM Frequency
1866 MHz	1866 MHz
Other Features	Other Features
Game Boost 2.0	Game Turbo 2.0
	MI Turbo
A91 Storage	Redmi K30 4G Storage
	64 GB
128 GB	128 GB
	256 GB
	UFS 2.1
A91 Memory Cards	Redmi K30 4G Memory Cards
microSD	microSD
microSDHC	microSDHC
microSDXC	microSDXC
A91 Display	Redmi K30 4G Display
Type / Technology	Type / Technology
AMOLED	IPS
Diagonal Size	Diagonal Size
6.4 in	6.67 in
162.56 mm	169.42 mm
16.26 cm	16.91 cm
Width	Width
2.63 in	2.74 in
66.71 mm	69.52 mm
6.67 cm	6.95 cm
Height	Height
5.84 in	6.08 in
148.24 mm	154.5 mm
14.82 cm	15.45 cm
Aspect Ratio	Aspect Ratio
2.222:1	2.222:1
Resolution	Resolution
1080 x 2400  pixels	1080 x 2400 pixels
Pixel Density	Pixel Density
411 ppi	395 ppi
161 ppcm	155 ppcm
Color Depth	Color Depth
24 bits	24 bits
16777216 colors	16777216 colors
Display Area	Display Area
84.49 %	85.1 %
Other Features	Other Features
Capacitive	Capacitive
Multi-touch	Multi-touch
Scratch resistant	Scratch resistant
	Corning Gorilla Glass 5
	2.5D curved glass screen
	Oleophobic coating
	120Hz sampling rate
	HDR10
	TUV Rheinland Low Light Blue Certification
A91 Sensors	Redmi K30 4G Sensors
Proximity	Proximity
Light	Light
Accelerometer	Accelerometer
Compass	Compass
Gyroscope	Gyroscope
Fingerprint	Fingerprint
Gravity	Gravity
	Pedometer
In-display fingerprint sensor	Side-mounted fingerprint sensor
	Geomagnetic
A91 Rear Camera	Redmi K30 4G Rear Camera
Sensor Model	Sensor Model
	Sony IMX686
Sensor Type	Sensor type
	CMOS BSI
Aperture	Aperture
f/1.8	f/1.7
Flash Type	Flash Type
Dual LED	Dual LED
Image Resolution	Image Resolution
8000 x 6000  pixels	9248 x 6944 pixels
48 MP	64.22 MP
Video resolution	Video resolution
3840 x 2160 pixels	3840 x 2160 pixels
8.29 MP	8.29 MP
Video FPS	Video FPS
30 fps	30 fps
Features	Features
Autofocus	Autofocus
	Continuous shooting
	Digital zoom
	Continuous autofocus
	Optical image stabilization
	Digital image stabilization
Geotagging	Geo tagging
Panorama	Panorama
HDR	HDR
Touch focus	Touch focus
Face detection	Face detection
White balance setting	White balance setting
ISO setting	ISO setting
Exposure compensation	Exposure compensation
Self-timer	Self-timer
Scene mode
Macro mode
	Sensor size- 1/1.7”
Pixel size- 1.6 um (4-in-1 pixel binning)	Pixel size-1.6 um (4-in-1 pixel binning)
Phase detection autofocus (PDAF)	Phase Detection
Pixel size- 0.8 um	Pixel size- 0.8 um
	Angle of view- 79 degree
6-elemet lens	10x digital zoom
	1080p @ 120 fps
	720p @ 960 fps
Secondary rear camera- 8 MP Hynix HI846 (ultra-wide)	Secondary rear camera- 8 MP (ultra-wide angle)
	Pixel size- 1.12 um (#2)
5-element lens (#2)
Angle of view- 119 degree (#2)	Angle of view- 120 degree (#2)
	Aperture size- f/2.2 (#2)
Third rear camera- 2 MP (depth-sensing)	Third rear camera- 2 MP (depth-sensing)
	Pixel size- 1.75 um (#3)
3-elemet lens (#3)	Aperture size- f/2.4 (#3)
Fourth rear camera- 2 MP (macro)	Fourth rear camera- 2 MP (macro)
3-element lens (#4)	Pixel size- 1.75 um (#4)
	Aperture size- f/2.4 (#4)
A91 Front Camera	Redmi K30 4G Front Camera
Aperture	Aperture
f/2
Image Resolution	Image Resolution
4608 x 3456 pixels	5963 x 3354 pixels
15.93 MP	20 MP
Video Resolution	Video Resolution
1920 x 1080 pixels	1920 x 1080 pixels
2.07 MP	2.07 MP
Video FPS	Video FPS
30 fps	30 fps
Features	Features
	Pixel size- 0.8 um
	Angle of view- 78 degree
	Secondary front camera- 2 MP (depth-sensing)
	Pixel size- 1.75 um (#2)
	Angle of view- 83 degree (#2)
	Aperture size- f/2.4 (#2)
A91 Audio	Redmi K30 4G Audio
Loudspeaker	Loudspeaker
Earpiece	Earpiece
	Hi-Res Audio
	Smart PA
	1217 super linear speaker
A91 Radio	Redmi K30 4G Radio
Yes	Yes
A91 Tracking /  Positioning	Redmi K30 4G Tracking /  Positioning
GPS	GPS
A-GPS	A-GPS
GLONASS	GLONASS
BeiDou	BeiDou
	Galileo
A91 Wi-Fi	Redmi K30 4G Wi-Fi
802.11a (IEEE 802.11a-1999)	802.11a (IEEE 802.11a-1999)
802.11b (IEEE 802.11b-1999)	802.11b (IEEE 802.11b-1999)
802.11g (IEEE 802.11g-2003)	802.11g (IEEE 802.11g-2003)
802.11n (IEEE 802.11n-2009)	802.11n (IEEE 802.11n-2009)
802.11n 5GHz	802.11n 5GHz
802.11 ac (IEEE 802.11ac)	802.11ac (IEEE 802.11ac)
Dual band	Dual band
Wi-Fi Hotspot	Wi-Fi Hotspot
Wi-Fi Direct	Wi-Fi Direct
Wi-Fi Display	Wi-Fi Display
A91 Bluetooth	Redmi K30 4G Bluetooth
Version	Version
5.0	5.0
Features	Features
A2DP	A2DP
LE	LE
A91 USB	Redmi K30 4G USB
Connector Type	Connector Type
USB Type-C	USB Type-C
Version	Version
2.0	2.0
Features	Features
Charging	Charging
Mass Storage	Mass Storage
On-The-Go	On-The-Go
A91 Headphone Jack	Redmi K30 4G Headphone Jack
Yes	Yes
A91 Connectivity	Redmi K30 4G Connectivity
Computer sync	Computer sync
OTA sync
Tethering	Tethering
	NFC
VoLTE	VoLTE
A91 Browser	Redmi K30 4G Browser
HTML	HTML
HTML5	HTML5
CSS 3	CSS 3
A91 Audio File Formats /  Codecs	Redmi K30 4G Audio File Formats /  Codecs
AAC	AAC
AAC+ / aaPlus / HE-AAC v1	AAC+ / aacPlus / HE-AAC v1
AMR / AMR-NB / GSM-AMR	AMR / AMR-NB / GSM-AMR
AMR-WB	AMR-WB
	aptX / apt-X
	aptX HD / apt-X HD / aptX lossless
eAAC+ / aacPlus v2 / HE-AAC v2	eAAC+ / aacPlus v2 / HE-AAC v2
FLAC	FLAC
MIDI	MIDI
MP3	MP3
OGG	OGG
WMA	WMA
WAV	WAV
A91 Video File Formats /  Codecs	Redmi K30 4G Video File Formats /  Codecs
3GPP	3GPP
AVI	AVI
DivX	DivX
Flash Video	Flash Video
H.263	H.263
H.264 / MPEG-4 Part 10 / AVC video	H.264 / MPEG-4 Part 10 / AVC video
MKV	MKV
MP4	MP4
WebM	WebM
MWV	WMV
Xvid	Xvid
A91 Battery	Redmi K30 4G Battery
Capacity	Capacity
4025 mAh	4500 mAh
Type	Type
Li-Polymer	Li-Polymer
Features	Features
Non-removable	Non-removable
Fast charging	Fast charging
Charger Output Power	Charger Output Power
5 V / 2 A	9 V / 3 A
Quick Charge Technology	Quick Charge Technology
VOOC 3.0
A91 Launch	Redmi K30 4G Launch
Announced	Announced
2019, 20th December	2019, 10th Dec.
Status	Status
Release 20th December 2019	Release 12th Dec. 2019
A91 Price	Redmi K30 4G Price
	6 GB + 64 GB = 230 $
	6 GB + 128 GB = 240 $
8 GB + 128 GB = 285 $	8 GB + 128 GB = 270 $
	8 GB + 256 GB = 310 $
A91 Design	Redmi K30 4G Design
Colors	Colors
Dark Night	Purple
Modern Bright Red	Fuchsia
White-Blue-Purple gradient
Width	Width
73.3 mm	76.6 mm
7.33 cm	7.66 cm
0.24 ft	0.25 ft
2.89 in	3.02 in
Height	Height
160.2 mm	165.3 mm
16.02 cm	16.53 cm
0.53 ft	0.54 ft
6.31 in	6.51 in
Thickness	Thickness
7.9 mm	8.79 mm
0.79 cm	0.88 cm
0.03 ft	0.03 ft
0.31 in	0.35 in
Weight	Weight
172 g	208 g
0.38 Ibs	0.46 lbs
6.07 oz	7.34 oz
Volume	Volume
92.77 cm3	111.3 cm3
5.63 in3	6.76 in3
Body Materials	Body Materials
Aluminium alloy	Aluminium alloy
Glass	Glass
A91 SIM Card	Redmi K30 4G SIM Card
SIM Card Type	SIM Card Type
Nano-SIM (4FF-fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)	Nano-SIM (4FF-fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)
Nano-SIM / microSD	Nano-SIM / microSD
Number of SIM Cards	Number of SIM Cards
2	2
Features	Features
Dual SIM stand-by	Dual SIM stand-by
A91 Mobile Network Technology and Bandwidth	Redmi K30 4G Mobile Network Technology and Bandwidth
UMTS (384 kbit/s)	UMTS (384 kbit/s)
EDGE	EDGE
GPRS	GPRS
HSPA+	HSPA+
LTE	LTE
TD-SCDMA	TD-SCDMA
A91 Networks	Redmi K30 4G Networks
GSM	GSM
GSM 850 MHz (B5)	GSM 850 MHz (B5)
GSM 900 MHz (B8)	GSM 900 MHz (B8)
GSM 1800 MHz (B3)	GSM 1800 MHz (B3)
GSM 1900 MHz (B2)	GSM 1900 MHz (B2)
CDMA	CDMA
CDMA 800 MHz (BC0)	CDMA 800 MHz (BC0)
W-CDMA	W-CDMA
W-CDMA 850 MHz (B5)	W-CDMA 850 MHz (B5)
W-CDMA 900 MHz (B8)	W-CDMA 900 MHz (B8)
W-CDMA 2100 MHz (B1)	W-CDMA 2100 MHz (B1)
TD-SCDMA	TD-SCDMA
TD-SCDMA 1880-1920 MHz	TD-SCDMA 1880-1920 MHz
TD-SCDMA 1880-1920 MHz	TD-SCDMA 2010-2025 MHz
LTE	LTE
LTE-FDD 850 MHz (B5)	LTE-FDD 850 MHz (B5)
LTE-FDD 900 MHz (B8)	LTE-FDD 900 MHz (B8)
	LTE-FDD 1800 MHz (B3)
LTE-FDD 2100 MHz (B1)	LTE-FDD 2100 MHz (B1)
LTE-TDD 1900 MHz (B39)	LTE-TDD 1900 MHz (B39)
	LTE-TDD 2000 MHz (B34)
LTE-TDD 2300 MHz (B40)	LTE-TDD 2300 MHz (B40)
LTE-TDD 2500 MHz (B41)	LTE-TDD 2500 MHz (B41)
	LTE-TDD 2600 MHz (B38)