In depth comparison and review of Realme C21 and Cisco Webex 840. 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 | Cisco Webex 840 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch - Rugged | |
| Height | 165.2 mm | 133 mm | Realme C21 has greater height than Cisco Webex 840. |
| Width | 76.4 mm | 66 mm | Realme C21 has greater width than Cisco Webex 840. |
| Depth | 8.9 mm | 13 mm | Realme C21 is narrower than Realme C21. |
| Weight | 190 g | 180 g | Cisco Webex 840 is lighter than Realme C21. |
| Body Colour | Cross black | Cross blue | - | |
| Protection | - | Shockproof, dustproof, waterproof | |
| Waterproof (Water-resistant) | - | Yes | Cisco Webex 840 is waterproof. |
| IP rating | - | IEC 60529 IP54 | |
| Connector Type | Micro-USB Headset jack - mini-phone 3.5mm |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | - | |
| SIM Card Qty | Dual-SIM | - |
| DISPLAY | Realme C21 | Cisco Webex 840 |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | LCD | - | |
| Screen Size (Display Size) | 6.5" | 4" | Realme C21 has larger screen size than Cisco Webex 840. |
| Screen Resolution (Display Resolution) | 1600 x 720 pixels | 800 x 480 pixels | Realme C21 has better screen resolution than Cisco Webex 840. |
| Display Format | HD+ | - | |
| Aspect Ratio | 20:9 | - | |
| Max Brightness | 420 cd/m² | - | |
| Display Features | Mini-drop display | - | |
| Display Protection (Screen Protector) | - | Dragontrail glass |
| PROCESSOR | Realme C21 | Cisco Webex 840 |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | - | |
|---|---|---|---|
| Clock Speed | 2.3 GHz | 1.8 GHz | Realme C21 has higher clock speed than Cisco Webex 840. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | PowerVR GE8320 | - |
| MEMORY | Realme C21 | Cisco Webex 840 |
|---|
| 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 | - |
| CAMERA | Realme C21 | Cisco Webex 840 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 1 | |
|---|---|---|---|
| Sensor Resolution | 13 Megapixel | 8 Megapixel | Realme C21 has better camera resolution than Cisco Webex 840. |
| Lens Aperture | F/2.2 | - | |
| 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 | 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 | 2 Megapixel | Realme C21 has better front camera resolution than Cisco Webex 840. |
| 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 | Cisco Webex 840 |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 3040 mAh | Realme C21 has larger battery capacity than Cisco Webex 840. |
|---|
| CELLULAR | Realme C21 | Cisco Webex 840 |
|---|
| Technology | WCDMA (UMTS) / GSM | - | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | - | |
| Operating System | Android 10 | Android 10 | |
| User Interface | Realme UI | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS |
| COMMUNICATIONS | Realme C21 | Cisco Webex 840 |
|---|
| Data Transmission | FDD-LTE, TDD-LTE | - | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | - | |
| 3G UMTS Band | Band 1, Band 5, Band 8 | - | |
| 3G UMTS Frequency | 2100, 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 | - | |
| 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 | - | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 4.2 | |
| NFC | - | Yes | Cisco Webex 840 has NFC reader for mobile payments. |
| WLAN Security | - | EAP-TLS, WPA2-Enterprise, WPA2-Personal |
| MEDIA | Realme C21 | Cisco Webex 840 |
|---|
| Supported Digital Audio Standards | - | OPUS, G.722, G.711a, G.711u, G.729a |
|---|
| FEATURES | Realme C21 | Cisco Webex 840 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, call timer, conference call, flight mode, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, proximity sensor, magnetometer, light sensor | Accelerometer, ambient light sensor, digital compass, magnetometer, gyroscope | |
| Security Devices | Fingerprint reader | - | |
| Additional Phone Features | Super power saving mode, HyperEngine technology, Reverse charging | Programmable emergency button, Session Initiation Protocol (SIP) support |
| OTHERS | Realme C21 | Cisco Webex 840 |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool | USB cable, power adapter | |
|---|---|---|---|
| Compliant Standards | TUV Rheinland | EN 61000-3-2, EN 61000-3-3, EN55024, EN50082-1, EN55022 Class B, ICES-003 Class B, EN 61000-6-1, FCC Part 15.247, AS/ACIF S004, RSS-210, RSS-102, FCC Part 68, IEC 60529 IP54, EN 300.328-2, FCC Part 2, UL 60950-1, IEC 60950-1, EN 60950-1, AS/NZS 4268, MIL-STD 810G, EN 61000-6-3, ACA, EN 300.328-1, FCC Part 15.407, EN 60601-1-2, ARIB STD-T66, ARIB STD-T70, ARIB STD-T71, VCCI Class B, EN 50360, AS/ACIF S040, AS/NZS CISPR 22 Class B, FCC OET Bulletin 65c, EN 55022/CISPR 22 Class B, EN 301 489-1, EN 300 386, Directive 2014/35/EU, Directive 2014/30/EU, EN 301 893, ANSI/UL 60950-1, Directive 2014/53/EU, KN22 Class B, ANSI/IEEE C95.1 (99), EN 301 489-17, AN/NZS 60950.1, CAN/CSA 60950-1, TIA 810 B, TIA 920 A, 47 CFR Part 15 Class B, NZ PTC220 DR | |
| Max Operating Temperature | - | 40 °C | |
| Min Operating Temperature | - | 0 °C | |
| Humidity Range Operating | - | 10 - 95% (non-condensing) |
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