Cat B35 vs Cat S31
Cat B35
Cat S31
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Network
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2G networkGSM 850, 900, 1800, 1900GSM 850, 900, 1800, 1900
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3G networkHSDPA 850, 900, 1900, 2100HSDPA 850, 900, 1900, 2100 - EU; HSDPA 850, 900, 1700(AWS), 1900, 2100 - USA
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4G networkLTE frequency band 1(2100), 3(1800), 7(2600), 8(900), 20(800)LTE 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) - USA
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LTE speedLTE, Cat4, 150 Mbps download, 51 Mbps uploadLTE, Cat4, 150 Mbps download, 50 Mbps upload
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-92017-9
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Status2018-102017-10
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Design
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SIMSingle SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by)Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
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Height138 mm146 mm
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Width60 mm74.4 mm
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Thickness14 mm12.6 mm
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Weight130 g200 g
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WaterproofIP68, 1.2m and 35 minutesIP68, 1.2 m and 35 minutes
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Dust proofYes, IP68IP68
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Resistance drop1.8m-
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MIL-STD-810GYesYes - dust, humidity, rain, salt, vibration, solar radiation, transport and thermal shock resistant
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ColorsBlackBlack
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Display
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Display typeTFTTFT capacitive touchscreen
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Physical size2.4 inches4.7 inches
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Resolution240 x 320 pixels720 x 1280 pixels
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Pixel density167 ppi312 ppi
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ProtectionScratch-proof glassCorning Gorilla Glass 3
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Multitouch-Yes
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Hardware
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CPUDual-core 1.3 GHz Cortex-A7Quad-core 1.3 GHz Cortex-A7 ARM
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ChipsetQualcomm MSM8905 Snapdragon 205Qualcomm MSM8909 Snapdragon 210
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GPUAdreno 304Adreno 304
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Memory RAM512 MB2 GB
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Internal storage4 GB16 GB
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Memory cardmicroSD, microSDHC, microSDXCmicroSD
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Memory card max128 GB64 GB
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OS
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OSKaiOS 2.5Android 7.0 (Nougat)
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Main camera
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Main camera2 MP8 MP
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Primary camera video480p@30fps720p@30fps
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Primary camera Autofocus-autofocus
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Primary camera flashLED flashLED flash
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Camera features-Geo-tagging, face detection, touch focus
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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Notifications-Vibration; MP3, WAV ringtones
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Multimedia
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Radio FMFM radioFM radio
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Connectivity
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WLANWi-Fi 802.11b, 802.11g, 802.11nWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi Hotspot-Yes
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USBmicroUSB 2.0microUSB 2.0
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USB On-The-Go-Yes
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Bluetoothv4.1v4.1
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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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BDS-Yes
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Features
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Messaging SMS-SMS(threaded view)
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Messaging MMS-MMS
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Messaging Email-Email
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Messaging IM-IM
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Messaging Push Email-Push Email
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Java-No
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SensorsAccelerometerAccelerometer, compass, proximity
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Browser
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HTMLNoHTML5
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Battery
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Battery typeLi-IonLi-Ion
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Battery capacity2300 mAh4000 mAh
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Battery removableNon-removableNon-removable
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Talk time 3G12 h-
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Standby time 3G720 h-
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Selfie camera
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Selfie camera2 MP