Cat S31 vs Oppo A91
Cat S31
Oppo A91
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
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3G networkHSDPA 850, 900, 1900, 2100 - EU; HSDPA 850, 900, 1700(AWS), 1900, 2100 - USAHSDPA 850, 1700(AWS), 1900, 2100
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4G networkLTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800) - EU; LTE frequency band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) - USALTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
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HSDPA speed-42.2 Mbps
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HSUPA speed-11.5 Mbps
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LTE speedLTE, Cat4, 150 Mbps download, 50 Mbps uploadLTE-A
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2017-92019-12
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Status2017-102019-12
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Design
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Build-Aluminium alloy, glass
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SIMSingle SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height146 mm160.2 mm
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Width74.4 mm73.3 mm
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Thickness12.6 mm7.9 mm
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Weight200 g172 g
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WaterproofIP68, 1.2 m and 35 minutes-
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Dust proofIP68-
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MIL-STD-810GYes - dust, humidity, rain, salt, vibration, solar radiation, transport and thermal shock resistant-
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ColorsBlackDark blue, Blue, Red
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Display
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Display typeTFT capacitive touchscreenAMOLED capacitive touchscreen
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Physical size4.7 inches6.4 inches
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Resolution720 x 1280 pixels1080 x 2400 pixels
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Pixel density312 ppi411 ppi
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Display colors-16777216
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ProtectionCorning Gorilla Glass 3Scratch resistant
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MultitouchYesYes
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Hardware
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CPU-Octa-core
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CPUQuad-core 1.3 GHz ARM Cortex-A7Quad-core 2.1 GHz Cortex-A73
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CPU(second)quad-core 2.0 GHz Cortex-A53
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ChipsetQualcomm MSM8909 Snapdragon 210Mediatek MT6771V Helio P70
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GPUAdreno 304Mali-G72 MP3
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Memory RAM2 GB8 GB
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Internal storage16 GB128 GB
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Memory cardmicroSDmicroSD, microSDHC, microSDXC
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Memory card max64 GB256 GB
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OS
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OSAndroid 7.0 (Nougat)ColorOS 6.1 (Android 9.0 Pie)
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Main camera
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Camera type-Quad
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Main camera8 MP48 MP, f/1.8 , 26 mm, 1/2.0" , 0.8 µm
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8 MP, f/2.2 , 13 mm, 1/4.0" , 1.12 µm
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2 MP, f/2.4 , 1/5" , 1.75 µm
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2 MP, f/2.4 , 1/5" , 1.75 µm
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Primary camera resolution-8000 x 6000 pixels
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Primary camera video720p@30fps2160p@30fps
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Primary camera Autofocusautofocus-
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Primary camera flashLED flashLED flash
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Camera featuresGeo-tagging, face detection, touch focusAutofocus, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro mode, phase detection autofocus
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Selfie camera
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Selfie camera2 MP16 MP, f/2 , 26 mm, 1/3.1" , 1.0 µm
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Selfie camera resolution-4608 x 3456 pixels
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Selfie camera video-1080p@30fps
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtones-
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Earpiece-Yes
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Multimedia
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Radio-FM Radio
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Radio FMFM radio-
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi Direct-Yes
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Wi-Fi display-Yes
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0Type-C 1.0 reversible connector
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USB On-The-GoYesYes
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Bluetoothv4.1v5.0
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Bluetooth A2DPYesYes
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bluetooth LEYesYes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASSYesYes
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Beidou-Yes
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BDSYes-
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Features
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Messaging SMSSMS(threaded view)-
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Messaging MMSMMS-
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Messaging EmailEmail-
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Messaging IMIM-
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Messaging Push EmailPush Email-
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JavaNo-
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SensorsAccelerometer, compass, proximityAccelerometer, compass, fingerprint, gyroscope, proximity, light
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Browser
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HTMLHTML5HTML5
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Battery
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Battery typeLi-IonLi-Po
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Battery capacity4000 mAh4025 mAh
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Battery removableNon-removableNon-removable
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Fast battery charging-VOOC Flash Charge 4.0 (50% in 30 min)
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Cost
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Price-290 USD
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