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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)

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