Cisco Webex 840 vs. OPPO A57s

Phone Comparison, Reviews and Tests

Side by side comparison and review of Cisco Webex 840 and OPPO A57s. 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.

Phone Specifications Comparison

Cisco Webex 840 vs. OPPO A57s Comparison Chart
DESIGN AND DIMENSIONS Cisco Webex 840 OPPO A57s
Product Type Smartphone Smartphone
Manufacturer Model Number - CPH2385
Form Factor Touch - Rugged Touch
Height 133 mm 163.74 mm OPPO A57s has greater height than Cisco Webex 840.
Width 66 mm 75.03 mm OPPO A57s has greater width than Cisco Webex 840.
Depth 13 mm 7.99 mm OPPO A57s is narrower than Cisco Webex 840.
Weight 180 g 187 g Cisco Webex 840 is lighter than Cisco Webex 840.
Body Colour - Starry black
Body Material - Composite polymer
Protection Shockproof, dustproof, waterproof -
Waterproof (Water-resistant) Yes - Cisco Webex 840 is waterproof.
IP rating IEC 60529 IP54 IPX4
SAR Value - 1.015 W/kg (body), 0.957 W/kg (head), 2.399 W/kg (limb)
Connector Type USB Type-C - 24 pin USB-C
Headset jack - mini-phone 3.5mm
Headset jack - mini-phone 3.5mm
USB Type-C - 24 pin USB-C
SIM Card Type (Size) - Nano SIM
SIM Card Qty - Dual-SIM
SIM Card Configuration Details - Nano SIM + nano SIM/microSD
DISPLAY Cisco Webex 840 OPPO A57s
Display Type - LCD display
Display Technology - LCD
Screen Size (Display Size) 4" 6.56" OPPO A57s has larger screen size than Cisco Webex 840.
Screen Resolution (Display Resolution) 800 x 480 pixels 1612 x 720 pixels OPPO A57s has better screen resolution than Cisco Webex 840.
Display Format - HD+
Pixel Density - 269 ppi
Aspect Ratio - 20.1:9
Max Brightness - 600 cd/m²
Colour Depth - 16.7 million colours
Contrast Ratio - 1500:1
Display Refresh Rate - 60 Hz
Touch Sampling Rate - 60 Hz
Display Features - Night mode, Eye comfort mode, 96% NTSC
Display Protection (Screen Protector) Dragontrail glass Panda Glass MN228
PROCESSOR Cisco Webex 840 OPPO A57s
Processor Type (CPU) - MediaTek Helio G35
Clock Speed 1.8 GHz 2.3 GHz OPPO A57s 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) - IMG GE8320
MEMORY Cisco Webex 840 OPPO A57s
RAM 3 GB LPDDR4X SDRAM - 4 GB OPPO A57s has more RAM than Cisco Webex 840.
Internal Memory Size (Storage Capacity) 32 GB 128 GB OPPO A57s has more internal memory than Cisco Webex 840.
Memory Interface - eMMC 5.1
Supported Flash Memory Cards (Expandable Memory) - microSDHC, microSD, microSDXC - up to 1 TB
CAMERA Cisco Webex 840 OPPO A57s
MAIN CAMERA
Number of Main Cameras 1 2
Sensor Resolution 8 Megapixel 50 Megapixel OPPO A57s has better camera resolution than Cisco Webex 840.
Sensor Size - 1/2.76"
Sensor Name - Samsung S5KJN1
Lens Aperture - F/1.8
Lens Construction - 5-element
Field of View (FoV) - 77 degree(s)
Pixel Size - 0.64 μm
Focus Adjustment Automatic Automatic
Minimum Focal Length (Focal Distance) - 27 mm
Digital Zoom - 5x
Special Effects - Stickers
Camera Modes - Panorama, Time-lapse mode, Pro mode, Portrait, Night
Light Source Flash LED flash
Video Resolutions - 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps
SECOND CAMERA
Sensor Resolution (2nd Camera) - 2 Megapixel
Sensor Size (2nd Camera) - 1/5"
Lens Aperture (2nd Camera) - F/2.4
Lens Element Qty (2nd Camera) - 3-element
Field of View (2nd Camera) - 89 degree(s)
Pixel Size (2nd Camera) - 1.75 μm
Minimum Focal Length (2nd Camera) - 21 mm
Camera Functions (2nd Camera) - Monochrome
FRONT CAMERA
Number of Front Cameras 1 1
Sensor Resolution (Front) 2 Megapixel 8 Megapixel OPPO A57s has better front camera resolution than Cisco Webex 840.
Sensor Size (Front) - 1/1.4"
Sensor Name (Front) - Omnivision OV08D10 sensor
Lens Aperture (Front) - F/2.0
Lens Element Qty (Front) - 5-element
Field of View (Front) - 79 degree(s)
Pixel Size (Front) - 1.12 μm
Focus Adjustment - Focus free
Min Focal Length (Front) - 26 mm
Special Effects (Front) - Stickers
Camera Modes (Front) - Panorama, Time-lapse mode, Portrait
Video Resolutions (Front) - 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps
BATTERY AND CHARGING Cisco Webex 840 OPPO A57s
Battery Capacity (Battery Size) 3040 mAh 5000 mAh OPPO A57s has larger battery capacity than Cisco Webex 840.
Fast Charging Technology - SuperVOOC Flash Charge technology OPPO A57s has fast charging technology.
Standby Time - 304 hours
Talk Time - 1800 minutes
Run Time Details - Talk: up to 1800 min
Standby (4G): up to 304 hrs
Playback (video): up to 13.4 hrs
Playback (audio (via speakers, 50% volume)): up to 40 hrs
CELLULAR Cisco Webex 840 OPPO A57s
Technology - WCDMA (UMTS) / GSM
Mobile Broadband Generation - 4G
Operating System Android 10 ColorOS 12.1 (based on Android 12)
Navigation GPS GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS
COMMUNICATIONS Cisco Webex 840 OPPO A57s
Data Transmission - VoLTE, FDD-LTE, TDD-LTE, VoWiFi
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 802.11a/b/g/n/ac IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 4.2 Bluetooth 5.3 BLE
NFC Yes Yes Both phones have an NFC reader for mobile payments.
WLAN Security EAP-TLS, WPA2-Enterprise, WPA2-Personal -
MEDIA Cisco Webex 840 OPPO A57s
Supported Digital Audio Standards OPUS, G.722, G.711a, G.711u, G.729a WAV, WMA, AAC, AMR, MP3, FLAC, AC-3, OGG, MIDI, APE (Monkey's Audio), LDAC, OPUS, MID, SBC, apt-X HD
Supported Digital Video Standards - MKV, FLV, AVI, MOV, ASF, 3GP, M4V, TS, M2TS, WebM, MP4
Sound Enhancements - Dirac sound technologies
FEATURES Cisco Webex 840 OPPO A57s
Phone Functions Speakerphone, call timer, conference call, flight mode, vibrating alert -
Sensors Accelerometer, ambient light sensor, digital compass, magnetometer, gyroscope Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor
Security Devices - Face recognition, fingerprint reader (side)
Additional Phone Features Programmable emergency button, Session Initiation Protocol (SIP) support Noise reduction microphone, Fast Charging, 3 years of Security Updates, 2 years of OS upgrades, Cooling Graphite Thermal Pad, Reverse charging, super-linear dual speakers
OTHERS Cisco Webex 840 OPPO A57s
Included Accessories USB cable, power adapter SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter
Compliant Standards 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 IPX4
Max Operating Temperature 40 °C -
Min Operating Temperature 0 °C -
Humidity Range Operating 10 - 95% (non-condensing) -
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