In depth comparison and review of Xiaomi Redmi 9 and CAT S42. 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 | Xiaomi Redmi 9 | CAT S42 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch - Rugged | |
| Height | 163.32 mm | 161.3 mm | Xiaomi Redmi 9 has greater height than CAT S42. |
| Width | 77.01 mm | 77.2 mm | CAT S42 has greater width than Xiaomi Redmi 9. |
| Depth | 9.1 mm | 12.7 mm | Xiaomi Redmi 9 is narrower than Xiaomi Redmi 9. |
| Weight | 198 g | 220 g | Xiaomi Redmi 9 is lighter than Xiaomi Redmi 9. |
| Body Colour | Carbon grey | - | |
| Protection | - | Shockproof, dustproof, splashproof, waterproof, sandproof, dirtproof, drop-proof | |
| Waterproof (Water-resistant) | - | Yes | CAT S42 is waterproof. |
| IP rating | - | IP68, IP69 | |
| SAR Value | 1.065 W/kg (body), 0.789 W/kg (head), 2.309 W/kg (limb) | 0.947 W/kg (head), 1.206 W/kg (body), 2.029 W/kg (limb) | |
| Integrated Components | Ultra-linear speaker | FM radio | |
| Connector Type | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
USB Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Xiaomi Redmi 9 | CAT S42 |
|---|
| Display Type | - | LCD display | |
|---|---|---|---|
| Display Technology | - | IPS | |
| Screen Size (Display Size) | 6.53" | 5.5" | Xiaomi Redmi 9 has larger screen size than CAT S42. |
| Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 1440 x 720 pixels | Xiaomi Redmi 9 has better screen resolution than CAT S42. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 394 ppi | - | |
| Aspect Ratio | 19.5:9 | 18:9 | |
| Max Brightness | 400 cd/m² | - | |
| Contrast Ratio | 1500:1 | - | |
| Display Enhancement Technology | Sunlight mode | Super Bright Display | |
| Display Features | Colour temperature adjustment, Dot Drop display, Reading mode 2.0 | - | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass 5 (scratch resistant glass) |
| PROCESSOR | Xiaomi Redmi 9 | CAT S42 |
|---|
| Processor Type (CPU) | MediaTek Helio G80 | MediaTek Helio A20 | |
|---|---|---|---|
| Clock Speed | 2 GHz | - | |
| Processor Core Qty | 8-core | Quad-core | Xiaomi Redmi 9 has higher processor core quantity than CAT S42. |
| 64-bit Architecture | Yes | - | Xiaomi Redmi 9 has 64-bit architecture. |
| Graphics System (GPU) | Mali-G52 MC2 | - |
| MEMORY | Xiaomi Redmi 9 | CAT S42 |
|---|
| RAM | LPDDR4X SDRAM - 4 GB | 3 GB | Xiaomi Redmi 9 has more RAM than CAT S42. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 32 GB | Xiaomi Redmi 9 has more internal memory than CAT S42. |
| Supported Flash Memory Cards (Expandable Memory) | microSD | microSDHC, microSDXC - up to 128 GB |
| CAMERA | Xiaomi Redmi 9 | CAT S42 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 4 | 1 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 13 Megapixel | Both phones have the same camera resolution. |
| Lens Type | Wide-angle lens | - | |
| Lens Aperture | F/2.2 | F/2.0 | CAT S42 has better lens aperture than Xiaomi Redmi 9. |
| Field of View (FoV) | 75.2 degree(s) | - | |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR, Kaleidoscope | - | |
| Camera Modes | Portrait mode | - | |
| Light Source | Flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | - | |
| Camera Features (Functions) | - | Phase Detect Auto-Focus (PDAF) |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | - | |
|---|---|---|---|
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | - | |
| Field of View (2nd Camera) | 118 degree(s) | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 5 Megapixel | - | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | F/2.4 | - | |
| Camera Functions (3rd Camera) | Macro camera | - |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | 2 Megapixel | - | |
|---|---|---|---|
| Camera Functions (4th Camera) | Depth camera | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 5 Megapixel | Xiaomi Redmi 9 has better front camera resolution than CAT S42. |
| Lens Aperture (Front) | F/2.0 | - | |
| Field of View (Front) | 77.8 degree(s) | - | |
| Focus Adjustment | Focus free | Focus free | |
| Special Effects (Front) | HDR | - | |
| Camera Modes (Front) | Portrait mode | - | |
| Light Source (Front) | Display flash | - | |
| Camera Features (Front) | Self-timer, Palm shutter | - |
| BATTERY AND CHARGING | Xiaomi Redmi 9 | CAT S42 |
|---|
| Battery Capacity (Battery Size) | 5020 mAh | 4200 mAh | Xiaomi Redmi 9 has larger battery capacity than CAT S42. |
|---|---|---|---|
| Talk Time | 1860 minutes | - | |
| Run Time Details | Talk: up to 1860 min Continuous navigation: up to 19 hrs Playback (video): up to 19 hrs Playback (Music): up to 185 hrs |
- | |
| Battery Technology | - | Lithium Ion |
| CELLULAR | Xiaomi Redmi 9 | CAT S42 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | - | Android 10 | |
| Payment Technology | - | Android Pay | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Xiaomi Redmi 9 | CAT S42 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, VoLTE, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE | |
|---|---|---|---|
| 2G Band | - | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, 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 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, 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 | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.0 | |
| NFC | - | Yes | CAT S42 has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi Redmi 9 | CAT S42 |
|---|
| Supported Digital Audio Standards | AAC, PCM, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), AMR-WB, AMR-NB | - | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, H.264, ASP, MP4 | - |
| FEATURES | Xiaomi Redmi 9 | CAT S42 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, digital compass, distance sensor, infrared (IR) sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass | |
| Security Devices | Face recognition, fingerprint reader | - | |
| Additional Phone Features | Fast Charging, AI face unlock | Wet Touchscreen Operation, Glove Touchscreen Operation |
| OTHERS | Xiaomi Redmi 9 | CAT S42 |
|---|
| Included Accessories | SIM card removal tool, USB-C cable, TPU case, 10W charger | Power adapter | |
|---|---|---|---|
| Compliant Standards | - | MIL-STD 810G, IP68, IP69 | |
| 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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