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.
DESIGN AND DIMENSIONS | Realme C21 | CAT S42H+ |
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Product Type | Smartphone | Smartphone | |
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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 |
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SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM |
DISPLAY | Realme C21 | CAT S42H+ |
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Display Type | LCD display | LCD display | |
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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+ |
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Processor Type (CPU) | MediaTek Helio G35 | MediaTek Helio | |
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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+ |
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RAM | LPDDR4X SDRAM - 3 GB | 3 GB | Both phones have the same RAM size. |
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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+ |
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MAIN CAMERA |
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Number of Main Cameras | 3 | 1 | |
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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 |
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Sensor Resolution (2nd Camera) | 2 Megapixel | - | |
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Lens Aperture (2nd Camera) | F/2.4 | - | |
Lens Element Qty (2nd Camera) | 3-element | - | |
Camera Functions (2nd Camera) | B&W lens | - |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | 2 Megapixel | - | |
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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 |
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Number of Front Cameras | 1 | 1 | |
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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+ |
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Battery Capacity (Battery Size) | 5000 mAh | 4200 mAh | Realme C21 has larger battery capacity than CAT S42H+. |
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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 |
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Battery Technology | - | Lithium Ion |
CELLULAR | Realme C21 | CAT S42H+ |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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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+ |
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Data Transmission | FDD-LTE, TDD-LTE | LTE, VoLTE | |
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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+ |
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Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
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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+ |
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Included Accessories | USB cable, power adapter, SIM card removal tool | - | |
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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 |