Apple iPhone 17 Pro Max vs Karbonn X21

Key Specs

Battery
-	3000 mAh
Display
-	5.45 inches (13.84 cm)
Front Camera
-	5 MP
Processor
-	Unisoc SC9863
RAM
-	2 GB
Rear Camera
-	8 MP

Audio

Audio Jack
Lightning	-
Loudspeaker
Yes	-

Battery

Capacity
5000 mAh	3000 mAh
Quick Charging
Yes	-
Removable
No	Yes
Standby Time
Up to 39 hours video playback	-
Type
Li-ion	Li-ion
USB Type-C
Yes	No
Wireless Charging
Yes	-

Camera

Autofocus
Yes	-
Flash
Yes, LED Flash	-
Front Camera
18MP	-
Image Resolution
4616 x 3464 Pixels	-
Rear Camera
48MP+12MP+48MP	-
Shooting Modes
Continuous Shooting High Dynamic Range mode (HDR)	-
Video Recording
4K 120fps	-

Design

Build Material
Aluminium frame	-
Colours
Silver, Cosmic Orange, Deep Blue	Midnight Blue, Aqua Green
Height
-	147.5 mm
Thickness
-	9.3 mm
Water Resistance
IP68	-
Weight
231 gram	160 grams
Width
-	71.8 mm

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Dimensions

Dimensions
Larger size (exact dimensions approximate)	-

Display

Aspect Ratio
-	18:9
Bezel-less display
-	Yes
Brightness
3000 nits	-
Display Type
Super Retina XDR OLED	IPS LCD
HDR / Ultra HDR
Yes	-
Pixel Density
460 ppi	295 ppi
Refresh Rate
120Hz	-
Resolution
2868x1320 pixels	720x1440 px (HD+)
Screen Protection
Ceramic Shield 2 front	-
Screen Size
6.9-inch	5.45 inches (13.84 cm)
Screen to Body Ratio (calculated)
-	72.38 %
Screen to Body Ratio (claimed by the brand)
91.4%	-
Touch Screen
-	Yes, Capacitive Touchscreen, Multi-touch

Front Camera

Resolution
-	5 MP, Primary Camera

General

Brand
Apple	Karbonn
Custom UI
-	Android Go
Launch Date
September 9, 2025	June 15, 2021 (Official)
Model
iPhone 17 Pro Max	-
Operating System
iOS 26	Android v10

Main Camera

Camera Features
-	Digital Zoom
Camera Setup
-	Single
Flash
-	Yes, LED Flash
Image Resolution
-	3264 x 2448 Pixels
OIS
-	No
Resolution
-	8 MP, Primary Camera
Shooting Modes
-	Burst mode

Multimedia

Audio Jack
-	3.5 mm
Loudspeaker
-	Yes

Network & Connectivity

Bluetooth
6.0	Yes, v4.2
GPS
GPS (NavIC, GLONASS, Galileo, BeiDou, QZSS)	Yes with A-GPS
NFC
Yes	No
Network Support
5G	5G Not Supported in India, 4G Supported in India, 3G, 2G
SAR Value
-	Head: 0.807 W/kg, Body: 1.152 W/kg
SIM 1
-	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
Dual SIM (eSIM + Nano SIM)	SIM1: Nano, SIM2: Nano
SIM Slot(s)
Dual SIM	Dual SIM, GSM+GSM
USB Connectivity
-	Mass storage device, USB charging, microUSB 2.0
VoLTE
Yes	Yes
Wi-Fi
Wi-Fi 7	Yes, Wi-Fi 4 (802.11 a/b/g/n)
Wi-Fi Features
-	Mobile Hotspot

Performance

Architecture
-	64 bit
CPU
-	Octa core, 1.6 GHz, Cortex A55
Chipset
-	Unisoc SC9863
Graphics
Apple GPU (Five-core graphics)	PowerVR GE8322
Processor
Apple A19 Pro chip	-
Processor Fabrication
3nm	-
RAM
12GB	2 GB

Sensors

Fingerprint Sensor
No	No
Other Sensors
Light sensor, Proximity sensor, Accelerometer, Barometer, Compass, Gyroscope	Light sensor, Proximity sensor, Accelerometer

Storage

Expandable Memory
No	Yes, Up to 256 GB
Internal Memory
256GB/512GB/1TB/2TB	32 GB