Phone Comparison - Oppo A7x vs vivo U20 vs Xiaomi Redmi K30

general General Info

Manufacturer Oppo vivo Xiaomi
Announced September 2018 November 2019 December 2019
Status Coming Soon - September 2018 Coming Soon - November 2019 Coming Soon - December 2019
Price - Rs. 10,990 ($0.00) [Similarly Priced] -
Colors Starry Purple, Ice Flame Blue Black, Blue, Green Deep sea gleam, Purple Jade Fantasy, Huaying Jinghong
Form Factor Candybar Candybar Candybar
Dimension 156.7 x 74 x 8 mm
(6.17 x 2.91 x 0.31 in)
162.2 x 76.5 x 8.9 mm
(6.39 x 3.01 x 0.35 in)
165.3 x 76.6 x 8.8 mm
(6.51 x 3.02 x 0.35 in)
Weight 169 g (5.96 oz) 193 g (6.81 oz) 208 g (7.34 oz)
SIM Type Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by) Hybrid Dual SIM (Nano-SIM, dual stand-by)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA 800 & TD-SCDMA - China
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA2000 1xEV-DO
3G Network HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 2100
4G Network LTE LTE band 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) LTE band 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
Messaging SMS, MMS, Push Mail, EMail, IM
Build Features - Fingerprint Sensor - Fingerprint Sensor
- Fingerprint Sensor(side-mounted)

hardware Hardware and OS

OS Android 8.1 (Oreo) Android 9.0 (Pie) Android 10.0
User Interface - Funtouch 9.0 MIUI 11
Processor Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53), Mediatek MT6771 Helio P60 Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver), Qualcomm SDM675 Snapdragon 675 (11 nm) Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver), Qualcomm SDM730 Snapdragon 730G (8 nm)
GPU Mali-G72 MP3 Adreno 612 Adreno 618
RAM 4 GB 6 GB 8 GB
Internal Memory 128 GB 64 GB 256 GB
External Memory microSD, up to 256 GB (dedicated slot) microSD, up to 256 GB microSD, up to 256 GB (uses shared SIM slot)

display Display

Type LTPS IPS LCD Capacitive Touchscreen, To Be Confirmed IPS LCD Capacitive Touchscreen IPS LCD Capacitive Touchscreen
Corning Gorilla Glass 5
HDR10
120Hz
Colors 16M colors 16M colors 16M colors
Size 6.3 inches 6.53 inches 6.67 inches
Resolution 1080 x 2340 pixels (409 ppi) 1080 x 2340 pixels (395 ppi) 1080 x 2400 pixels (395 ppi)
Screen-to-Body Ratio 84.05% 84.22% 84.65%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio FM radio FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera Dual 16 MP + 2 MP 16 MP + 8 MP + 2 MP 64 MP + 8 MP + 2 MP + 2 MP
Flash LED flash LED Flash Dual-LED flash
Features HDR, PDAF, Panorama 16 MP, f/1.8, (wide), PDAF
8 MP, f/2.2, 13mm (ultrawide)
2 MP, f/2.4, macro camera
HDR, Panorama
64 MP, Sony IMX686 sensor, f/1.8, 26mm (wide), 1/1.7", 0.8µm, PDAF
8 MP, f/2.2, 13mm (ultrawide), 1/4", 1.12µm
2 MP, f/2.4, 1/5", 1.75µm (dedicated macro camera)
2 MP, f/2.4, 1/5", 1.75µm, depth sensor
HDR, panorama
Video 1080p@30fps 1080p@30fps 2160p@30fps, 1080p@30/120fps, 720p@960fps
Front Camera 16 MP, f/2.0, HDR, 1080@30fps [Similar] 16 MP, f/2.0, HDR, 1080p@30fps [Similar] 20 MP, f/2.2, 0.8µm
2 MP, f/2.4, 1/5", 1.75µm, depth sensor
HDR
1080p@30fps [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat13 600/100 Mbps HSPA 42.2/5.76 Mbps, LTE-A HSPA 42.2/5.76 Mbps, LTE-A
Bluetooth 4.2, A2DP, LE 5.0, A2DP, LE, aptX 5.0, A2DP, LE, aptX HD
Wi-Fi Wi-Fi 802.11 a/b/g/n, dual-band, WiFi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB microUSB 2.0, USB On-The-Go microUSB 2.0, USB On-The-Go 2.0, Type-C 1.0 reversible connector, USB On-The-Go
GPS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, GALILEO, BDS
Browser HTML5 Yes Yes

memory User Memory

Internal 128 GB, 4 GB RAM 64 GB, 6 GB RAM 256 GB, 8 GB RAM or 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 6 GB RAM
Expandable Storage microSD, up to 256 GB (dedicated slot) microSD, up to 256 GB microSD, up to 256 GB (uses shared SIM slot)
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor present
Gyroscope Sensor gyroscope sensor present gyroscope sensor not present gyroscope sensor present
NFC NFC not supported NFC not supported NFC supported

battery Battery

Type Non-removable Li-Po Battery Non-removable Li-Po Battery
Fast battery charging 18W
Non-removable Li-Po Battery
Fast battery charging 27W
Capacity 3500 mAh 5000 mAh 4500 mAh
Stand by - - -
Talk Time - - -