Realme 15x 5g vs Xiaomi Redmi K40

Key Specs

Battery
-	4520 mAh
Display
-	6.67 inches (16.94 cm)
Front Camera
-	20 MP
Processor
-	Qualcomm Snapdragon 870
RAM
-	6 GB
Rear Camera
-	48 MP + 8 MP + 5 MP

Audio

Stereo Speakers
Yes	-

Battery

Capacity
7000 mAh	4520 mAh
Quick Charging
60W SuperVOOC	Yes, Fast, 33W: 100 % in 52 minutes
Removable
-	No
Type
-	Li-Polymer
USB Type-C
Yes	Yes

Camera

Autofocus
-	Yes
Camera Features
-	Digital Zoom Auto Flash Face detection Touch to focus
Camera Setup
-	Single
Flash
-	Yes, LED Flash
Front Camera
50MP	-
Image Resolution
-	8000 x 6000 Pixels
Rear Camera
50MP + 5MP	-
Resolution
-	20 MP f/2.4, Wide Angle, Primary Camera(3.4" sensor size, 0.8µm pixel size)
Sensor
-	IMX582, Exmor-RS CMOS Sensor
Settings
-	Exposure compensation, ISO control
Shooting Modes
-	Continuous Shooting High Dynamic Range mode (HDR)
Video Recording
-	1920x1080 @ 30 fps

Design

Colours
-	Glossy Black, Icy White, Dreamland
Height
-	163.7 mm
Thickness
-	7.8 mm
Water Resistance
IP69 dust and water resistance	-
Weight
-	196 grams Below
Width
-	76.4 mm

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Display

Aspect Ratio
-	20:9
Bezelless Display
-	Yes with punch-hole display
Brightness
1200 nits	1300 nits
Display Type
-	Super AMOLED
HDR 10 / HDR+ support
-	Yes, HDR 10+
Pixel Density
-	395 ppi
Refresh Rate
144Hz	120 Hz
Resolution
720x1570 pixels	-
Screen Protection
-	Corning Gorilla Glass v5
Screen Size
6.8-inch	6.67 inches (16.94 cm)
Screen to Body Ratio (calculated)
-	85.88 %
Touch Screen
-	Yes, Capacitive Touchscreen, Multi-touch

General

Brand
Realme	Xiaomi
Custom UI
-	MIUI
Launch Date
October 1, 2025	-
Model
15x 5G	-
Operating System
Android 15 with Realme UI 6.0	Android v11

Multimedia

Audio Jack
-	USB Type-C
FM Radio
-	No
Fm Radio
-	No
Loudspeaker
-	Yes

Network & Connectivity

Bluetooth
v5.3	Yes, v5.1
GPS
-	Yes with A-GPS, Glonass
NFC
-	Yes
Network Support
4G/5G	5G Supported in India, 4G Supported in India, 3G, 2G
SIM 1
-	5G Bands: FDD N1 / N3 / N28 TDD N41 / N77 / N78 4G Bands: TD-LTE 2300(band 40) FD-LTE 1800(band 3) 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 2300(band 40) FD-LTE 1800(band 3) 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
USB Connectivity
-	Mass storage device, USB charging
Usb Connectivity
-	Mass storage device, USB charging
VoLTE
-	Yes
Volte
-	Yes
Wi-Fi
-	Yes, Wi-Fi 5 (802.11 b/g/n/ac) 5GHz
Wi-Fi Features
-	Mobile Hotspot

Performance

Architecture
-	64 bit
CPU
-	Octa core (3.2 GHz, Single core, Kryo 585 + 2.42 GHz, Tri core, Kryo 585 + 1.8 GHz, Quad core, Kryo 585)
Chipset
-	Qualcomm Snapdragon 870
Fabrication
-	7 nm
Graphics
-	Adreno 650
Processor
MediaTek Dimensity 6300	-
Processor Fabrication
6nm	-
RAM
6GB/8GB	-
RAM Type
-	LPDDR5
RAM type
-	LPDDR5
Ram
-	6 GB

Sensors

Fingerprint Sensor
side-mounted fingerprint sensor	Yes
Fingerprint Sensor Position
-	Side
Other Sensors
-	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope

Storage

Expandable Memory
up to 2TB via MicroSD card	No
Internal Memory
128GB/256GB	128 GB
Storage Type
UFS 2.2 storage	UFS 3.1