Realme C21 vs. CAT S42H+

Phone Comparison, Reviews and Tests

In depth comparison and review of Realme C21 and CAT S42H+. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.

Phone Specifications Comparison

Realme C21 vs. CAT S42H+ Comparison Chart
DESIGN AND DIMENSIONS Realme C21 CAT S42H+
Product Type Smartphone Smartphone
Form Factor Touch Touch - Rugged
Height 165.2 mm 161.3 mm Realme C21 has greater height than CAT S42H+.
Width 76.4 mm 77.2 mm CAT S42H+ has greater width than Realme C21.
Depth 8.9 mm 12.7 mm Realme C21 is narrower than Realme C21.
Weight 190 g 220 g Realme C21 is lighter than Realme C21.
Body Colour Cross black | Cross blue Black
Protection - Shockproof, dustproof, splashproof, waterproof, sandproof, dirtproof, chemical-resistant, drop-proof, bleach resistant
Waterproof (Water-resistant) - Yes CAT S42H+ is waterproof.
IP rating - IP68, IP69
Connector Type Micro-USB
Headset jack - mini-phone 3.5mm
Micro-USB
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Nano SIM Nano SIM
SIM Card Qty Dual-SIM Dual-SIM
DISPLAY Realme C21 CAT S42H+
Display Type LCD display LCD display
Display Technology LCD IPS
Screen Size (Display Size) 6.5" 5.5" Realme C21 has larger screen size than CAT S42H+.
Screen Resolution (Display Resolution) 1600 x 720 pixels 1440 x 720 pixels Realme C21 has better screen resolution than CAT S42H+.
Display Format HD+ HD+
Aspect Ratio 20:9 18:9
Max Brightness 420 cd/m² -
Display Features Mini-drop display -
PROCESSOR Realme C21 CAT S42H+
Processor Type (CPU) MediaTek Helio G35 MediaTek Helio
Clock Speed 2.3 GHz 1.8 GHz Realme C21 has higher clock speed than CAT S42H+.
Processor Core Qty 8-core Quad-core Realme C21 has higher processor core quantity than CAT S42H+.
Graphics System (GPU) PowerVR GE8320 -
MEMORY Realme C21 CAT S42H+
RAM LPDDR4X SDRAM - 3 GB 3 GB Both phones have the same RAM size.
Internal Memory Size (Storage Capacity) 32 GB 32 GB Both phones have the same internal memory capacity.
Supported Flash Memory Cards (Expandable Memory) microSD microSDHC, microSD, microSDXC - up to 128 GB
CAMERA Realme C21 CAT S42H+
MAIN CAMERA
Number of Main Cameras 3 1
Sensor Resolution 13 Megapixel 13 Megapixel Both phones have the same camera resolution.
Lens Aperture F/2.2 F/2.0 CAT S42H+ has better lens aperture than Realme C21.
Lens Construction 5-element -
Focus Adjustment Automatic Automatic
Digital Zoom 4x -
Special Effects HDR -
Camera Modes Panorama, Time-lapse mode, Slow motion mode, Beauty mode, Expert Mode, Nightscape capture mode, Portrait, Filter mode, Super nightscape -
Light Source LED flash LED flash
Video Resolutions 1920 x 1080 (1080p) at 30 fps -
Camera Features (Functions) Phase Detect Auto-Focus (PDAF), AI Triple camera, Chroma boost -
SECOND CAMERA
Sensor Resolution (2nd Camera) 2 Megapixel -
Lens Aperture (2nd Camera) F/2.4 -
Lens Element Qty (2nd Camera) 3-element -
Camera Functions (2nd Camera) B&W lens -
THIRD CAMERA
Sensor Resolution (3rd Camera) 2 Megapixel -
Lens Aperture (3rd Camera) F/2.4 -
Lens Element Qty (3rd Camera) 3-element -
Camera Functions (3rd Camera) Macro camera -
Camera Features (3rd Camera) 4cm macro photography -
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 5 Megapixel 5 Megapixel Both phones have the same front camera resolution.
Lens Aperture (Front) F/2.2 -
Lens Element Qty (Front) 3-element -
Special Effects (Front) HDR -
Camera Modes (Front) Time-lapse mode, Beauty mode, portrait mode, AI Beauty, Filter mode, Panoramic mode -
Face Recognition (Face ID) Face recognition - Realme C21 has face detection.
BATTERY AND CHARGING Realme C21 CAT S42H+
Battery Capacity (Battery Size) 5000 mAh 4200 mAh Realme C21 has larger battery capacity than CAT S42H+.
Standby Time - 840 hours
Talk Time - 1860 minutes
Run Time Details - Standby: up to 840 hrs
Talk: up to 1860 min
Mixed usage: up to 2 days
Battery Technology - Lithium Ion
CELLULAR Realme C21 CAT S42H+
Technology WCDMA (UMTS) / GSM WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G 4G Both phones have the same mobile network generation.
Operating System Android 10 Android 10
User Interface Realme UI -
Navigation GPS, A-GPS, GLONASS, BeiDou -
COMMUNICATIONS Realme C21 CAT S42H+
Data Transmission FDD-LTE, TDD-LTE LTE, VoLTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 5, Band 8 Band 1, Band 2, Band 4, Band 5, Band 8
3G UMTS Frequency 2100, 850, 900 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 28
4G LTE Frequency FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT
Wireless Interface IEEE 802.11b/g/n Wi-Fi
Bluetooth Bluetooth 5.0 Bluetooth 5.0
NFC - Yes CAT S42H+ has NFC reader for mobile payments.
FEATURES Realme C21 CAT S42H+
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert -
Sensors Accelerometer, proximity sensor, magnetometer, light sensor -
Security Devices Fingerprint reader -
Additional Phone Features Super power saving mode, HyperEngine technology, Reverse charging Programmable push-to-talk button, guaranteed upgrade to Android 11
OTHERS Realme C21 CAT S42H+
Included Accessories USB cable, power adapter, SIM card removal tool -
Compliant Standards TUV Rheinland IP68, ISO 22196, IP69, MIL-STD 810H
Max Depth of Water Resistance - 1.5 m
Max Height of Shock Resistance - 1.8 m
Max Operating Temperature - 55 °C
Min Operating Temperature - -25 °C
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