Realme 15x 5g vs Xiaomi Redmi K20

Key Specs

Battery
-	4000 mAh
Display
-	6.39 inches (16.23 cm)
Front Camera
-	20 MP
Processor
-	Qualcomm Snapdragon 730
RAM
-	6 GB
Rear Camera
-	48 MP + 13 MP + 8 MP

Audio

Stereo Speakers
Yes	-

Battery

Capacity
7000 mAh	4000 mAh
Quick Charging
60W SuperVOOC	Yes, Quick, v3.0, 18W
Removable
-	No
Type
-	Li-Polymer
USB Type-C
Yes	Yes

Camera

Front Camera
50MP	-
Rear Camera
50MP + 5MP	-

Design

Build Material
-	Back: Gorilla Glass
Colours
-	Carbon Black, Flame Red, Glacier Blue, Pearl White
Height
-	156.7 mm
Thickness
-	8.8 mm
Water Resistance
IP69 dust and water resistance	-
Weight
-	191 grams
Width
-	74.3 mm

Not sure which
mobile to buy?

Display

Aspect Ratio
-	19.5:9
Bezel-less display
-	Yes
Brightness
1200 nits	-
Display Type
-	AMOLED
HDR 10 / HDR+ support
-	Yes
Pixel Density
-	403 ppi
Refresh Rate
144Hz	-
Resolution
720x1570 pixels	1080x2340 px (FHD+)
Screen Protection
-	Corning Gorilla Glass v5
Screen Size
6.8-inch	6.39 inches (16.23 cm)
Screen to Body Ratio (calculated)
-	85.9 %
Screen to Body Ratio (claimed by the brand)
-	91.9 %
Touch Screen
-	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Camera Setup
-	Single
Camera Type
-	Pop-Up
Resolution
-	20 MP f/2.2, Primary Camera(0.8µm pixel size)
Video Recording
-	1920x1080 @ 30 fps 1280x720 @ 30 fps

General

Brand
Realme	Xiaomi
Custom UI
-	MIUI
Launch Date
October 1, 2025	July 22, 2019
Model
15x 5G	-
Operating System
Android 15 with Realme UI 6.0	Android v9.0 (Pie)

Main Camera

Autofocus
-	Yes, Phase Detection autofocus
Camera Features
-	Auto Flash Face detection Touch to focus
Camera Setup
-	Triple
Flash
-	Yes, Dual LED Flash
Image Resolution
-	8000 x 6000 Pixels
Resolution
-	48 MP f/1.75, Primary Camera(2" sensor size, 0.8µm pixel size)13 MP f/2.4, Ultra-Wide Angle Camera(3" sensor size, 1.12µm pixel size)8 MP f/2.4, Telephoto Camera(4.0" sensor size, 1.12µm pixel size)
Sensor
-	IMX586, Exmor-RS CMOS Sensor
Settings
-	Exposure compensation, ISO control
Shooting Modes
-	Continuous Shooting High Dynamic Range mode (HDR)
Video Recording
-	3840x2160 @ 30 fps 1920x1080 @ 60 fps 1280x720 @ 120 fps

Multimedia

Audio Jack
-	3.5 mm
Loudspeaker
-	Yes

Network & Connectivity

Bluetooth
v5.3	Yes, v5.0
GPS
-	Yes with A-GPS, Glonass
Network Support
4G/5G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
-	Head: 1.07 W/kg, Body: 0.723 W/kg
SIM 1
-	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM 2
-	4G Bands: TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 850(band 5) 3G Bands: UMTS 1900 / 2100 / 850 / 900 MHz 2G Bands: GSM 1800 / 1900 / 850 / 900 MHz GPRS: Available EDGE: Available
SIM Size
-	SIM1: Nano, SIM2: Nano
SIM Slot(s)
-	Dual SIM, GSM+GSM, Dual VoLTE
USB Connectivity
-	Mass storage device, USB charging
VoLTE
-	Yes
Wi-Fi
-	Yes, Wi-Fi 5 (802.11 b/g/n/ac), MIMO
Wi-Fi Calling
-	Yes
Wi-Fi Features
-	Wi-Fi Direct, Mobile Hotspot

Performance

Architecture
-	64 bit
CPU
-	Octa core (2.2 GHz, Dual core, Kryo 470 + 1.8 GHz, Hexa Core, Kryo 470)
Chipset
-	Qualcomm Snapdragon 730
Fabrication
-	8 nm
Graphics
-	Adreno 618
Processor
MediaTek Dimensity 6300	-
Processor Fabrication
6nm	-
RAM
6GB/8GB	6 GB
RAM Type
-	LPDDR4X
RAM type
-	LPDDR4X

Sensors

Fingerprint Sensor
side-mounted fingerprint sensor	Yes
Fingerprint Sensor Position
-	On-screen
Fingerprint Sensor Type
-	Optical
Other Sensors
-	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Storage

Expandable Memory
up to 2TB via MicroSD card	No
Internal Memory
128GB/256GB	64 GB
Storage Type
UFS 2.2 storage	UFS 2.1
USB OTG
-	Yes