Lava Z91 vs Oppo A57
Lava Z91
Oppo A57
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Network
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2G networkGSM 900, 1800GSM 850, 900, 1800, 1900; CDMA 800
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3G networkHSDPA 900, 2100HSDPA 850, 900, 1900, 2100 & TD-SCDMA
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4G networkLTE frequency band 1(2100), 3(1800), 5(850), 40(2300), 41(2500)LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
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HSDPA speed42.2 Mbps-
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HSUPA speed5.76 Mbps-
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HSPA speed-HSPA
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LTE speedLTE, Cat4, 150 Mbps download, 50 Mbps uploadLTE
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GPRSYesYes
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EDGEYesYes
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Availability
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Oficially announced2018-32016-11
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Status2018-32016-12
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Design
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BuildPlastic, metal-
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SIMDual SIM (Nano-SIM, dual stand-by)Dual SIM (Nano-SIM, dual stand-by)
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Height152 mm149.1 mm
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Width72.9 mm72.9 mm
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Thickness7.7 mm7.7 mm
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Weight147 g147 g
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ColorsBlueGold, Rose Gold
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Display
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Display typeIPS LCD capacitive touchscreenIPS LCD capacitive touchscreen
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Physical size5.7 inches5.2 inches
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Resolution720 x 1440 pixels720 x 1280 pixels
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Pixel density282 ppi282 ppi
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Display colors1677721616777216
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Protection2.5D curved glass screen-
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MultitouchYes, max 5 fingersYes
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Hardware
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CPUQuad-core 1.3 GHz ARM Cortex-A53Octa-core 1.4 GHz ARM Cortex-A53
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ChipsetMediatek MT6739Qualcomm MSM8940 Snapdragon 435
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GPUPowerVR GE8100Adreno 505
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Memory RAM3 GB3 GB
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Internal storage32 GB32 GB
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Memory cardmicroSDmicroSD(uses second SIM slot)
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Memory card max128 GB256 GB
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OS
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OSAndroid 7.1 (Nougat)Android OS, v6.0 (Marshmallow)
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Main camera
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Main camera13 MP, f/2.0 , 1.12 µm13 MP, f/2.2
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Primary camera resolution4160 x 3120 pixels-
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Primary camera video1080p@30fps1080p@30fps
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Primary camera Autofocusautofocusphase detection autofocus
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Primary camera flash-LED flash
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Camera featuresGeo-tagging, face detection, touch focusGeo-tagging, HDR, face detection, panorama, touch focus
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Selfie camera
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FlashLED flash-
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Selfie camera8 MP, f/2.216 MP, f/2.0 , 1.12 µm
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Selfie camera resolution3264 x 2448 pixels-
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Selfie camera video-1080p
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Sound
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3.5mm jackYesYes
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LoudspeakerYesYes
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NotificationsVibration; MP3, WAV ringtonesVibration; MP3, WAV ringtones
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EarpieceYes-
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Multimedia
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Radio FMFM radioFM radio
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Connectivity
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WLANWi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11acWi-Fi 802.11b, 802.11g, 802.11n
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WLAN WiFi HotspotYesYes
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WLAN WiFi DirectYes-
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WLAN WiFi Dual BandYes-
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USBmicroUSB 2.0microUSB 2.0
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USB host-Yes
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Bluetoothv4.0v4.1
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Bluetooth A2DPYesYes
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GPSYes, with A-GPSYes, with A-GPS
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Features
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Messaging SMSSMS(threaded view)SMS(threaded view)
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Messaging MMSMMSMMS
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Messaging EmailEmailEmail
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Messaging IMIM-
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Messaging Push Email-Push Email
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Java-No
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SensorsFingerprint (rear-mounted), accelerometer, proximityFingerprint (front-mounted), accelerometer, compass, proximity
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Browser
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HTMLYesHTML5
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Battery
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Battery typeLi-PoLi-Ion
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Battery capacity3000 mAh2900 mAh
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Battery removableNon-removableNon-removable
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