Side by side comparison and review of HTC Desire 820 and CAT S31. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | HTC Desire 820 | CAT S31 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch - Rugged | |
| Height | 157.7 mm | 146 mm | HTC Desire 820 has greater height than CAT S31. |
| Width | 78.74 mm | 74.42 mm | HTC Desire 820 has greater width than CAT S31. |
| Depth | 7.74 mm | 12.6 mm | HTC Desire 820 is narrower than HTC Desire 820. |
| Weight | 155 g | 200 g | HTC Desire 820 is lighter than HTC Desire 820. |
| Body Colour | Tuxedo grey | Marble white | - | |
| Body Material | Polycarbonate | - | |
| Protection | - | Shockproof, dustproof, waterproof | |
| Waterproof (Water-resistant) | - | Yes | CAT S31 is waterproof. |
| IP rating | - | IP68 | |
| SAR Value | 0.323 W/kg (body), 0.373 W/kg (head) | 1.649 W/kg (body), 0.799 W/kg (head) | |
| Integrated Components | FM radio | - | |
| Connector Type | Headset jack - mini-phone 3.5mm Micro-USB - 5 pin Micro-USB Type B |
Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | - | Dual-SIM |
| DISPLAY | HTC Desire 820 | CAT S31 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | Super LCD 2 | IPS | |
| Screen Size (Display Size) | 5.5" | 4.7" | HTC Desire 820 has larger screen size than CAT S31. |
| Screen Resolution (Display Resolution) | 1280 x 720 pixels | 1280 x 720 pixels | Both phones have the same screen resolution. |
| Display Format | HD | HD | |
| Pixel Density | 267 ppi | - | |
| Colour Depth | 16.7 million colours | - | |
| Display Enhancement Technology | - | Super Bright Display | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass 3 (scratch resistant glass) |
| PROCESSOR | HTC Desire 820 | CAT S31 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 615 | Qualcomm | |
|---|---|---|---|
| Processor Number | - | MSM8909 | |
| Processor Core Qty | 8-core | Quad-core | HTC Desire 820 has higher processor core quantity than CAT S31. |
| Graphics System (GPU) | Qualcomm ADRENO 405 | - |
| MEMORY | HTC Desire 820 | CAT S31 |
|---|
| RAM | 2 GB | 2 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 16 GB | 16 GB | Both phones have the same internal memory capacity. |
| User Memory | 11.2 GB | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 128 GB |
| CAMERA | HTC Desire 820 | CAT S31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 8 Megapixel | HTC Desire 820 has better camera resolution than CAT S31. |
| Sensor Type | BSI-CMOS | - | |
| Lens Aperture | F/2.2 | - | |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 28 mm | - | |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Burst mode | - | |
| Face Recognition (Face ID) | Face detection | - | HTC Desire 820 has face detection. |
| Light Source | LED light | LED flash | |
| Still Image Resolutions | 4160 x 3120 | - | |
| Video Resolutions | 1920 x 1080 (1080p) | 1280 x 720 (720p) at 120 fps | |
| Camera Features (Functions) | Auto selfie, Photo Booth feature, Live Makeup, Split Capture | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 2 Megapixel | HTC Desire 820 has better front camera resolution than CAT S31. |
| Sensor Type (Front) | BSI-CMOS | - | |
| Focus Adjustment | - | Focus free | |
| Special Effects (Front) | Face fusion | - | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) | - |
| BATTERY AND CHARGING | HTC Desire 820 | CAT S31 |
|---|
| Battery Capacity (Battery Size) | 2600 mAh | 4000 mAh | CAT S31 has larger battery capacity than HTC Desire 820. |
|---|---|---|---|
| Standby Time | 455 hours | 912 hours | CAT S31 has longer standby time than HTC Desire 820. |
| Talk Time | 1068 minutes | 1800 minutes | CAT S31 has longer battery life when making calls than HTC Desire 820. |
| Run Time Details | Talk (WCDMA): up to 1068 min Standby (WCDMA): up to 455 hrs |
Talk: up to 1800 min Standby: up to 912 hrs |
|
| Battery Technology | Lithium polymer | Lithium Ion |
| CELLULAR | HTC Desire 820 | CAT S31 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android 4.4 (KitKat) | Android 7.0 Nougat | |
| User Interface | HTC Sense | - | |
| Navigation | A-GPS, GLONASS | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | HTC Desire 820 | CAT S31 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | - | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 850, 900 | |
| 4G LTE Band | Band 3, Band 7, Band 8, Band 20 | Band 1, Band 2, Band 3, Band 5, Band 7, Band 8, Band 20 | |
| 4G LTE Frequency | FDD 1800+, FDD 2600, FDD 900, FDD 800 DD | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD | |
| Wireless Interface | IEEE 802.11a/b/g/n | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.0 | Bluetooth 4.1 | |
| Bluetooth Profiles | A2DP | - | |
| NFC | Yes | - | HTC Desire 820 has NFC reader for mobile payments. |
| Communication Features | Mobile Email client, Internet browser | - | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | HTC Desire 820 | CAT S31 |
|---|
| Supported Digital Audio Standards | WAV, AAC, AMR, MP3, OGG, MIDI, M4A, WMA 9 | - | |
|---|---|---|---|
| Supported Digital Video Standards | AVI, MPEG-4, 3GP, H.264, H.263, WMV9, 3G2 | - | |
| Sound Enhancements | HTC BoomSound | - |
| FEATURES | HTC Desire 820 | CAT S31 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass | |
| Personal Information Management | Calendar, synchronization with PC, calculator, reminder, alarm clock | - | |
| Additional Phone Features | DLNA Certified, sharing media via DLNA, Wi-Fi Miracast, HTC BlinkFeed, HTC Sense Voice | Dual microphones, Wet Touchscreen Operation, Glove Touchscreen Operation | |
| Android Enterprise Recommended | - | Yes |
| OTHERS | HTC Desire 820 | CAT S31 |
|---|
| Included Accessories | Power adapter | Power adapter | |
|---|---|---|---|
| Compliant Standards | - | MIL-STD 810G, IP68 | |
| Max Depth of Water Resistance | - | 1.2 m | |
| Max Height of Shock Resistance | - | 1.8 m | |
| Max Operating Temperature | - | 55 °C | |
| Min Operating Temperature | - | -30 °C |
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