Maxwest Astro X4 vs vivo X21i
Maxwest Astro X4
vivo X21i
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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, 1700(AWS), 1900HSDPA 850, 900, 2100
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4G network-LTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
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HSDPA speed21.1 Mbps-
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HSUPA speed5.76 Mbps-
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HSPA speed-HSPA
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LTE speed-LTE
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GPRSClass 12Yes
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EDGEClass 12Yes
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Availability
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Oficially announced2016-12018-5
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Status2016-22018-5
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Design
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Build-Aluminium alloy, glass
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SIMDual SIM (dual stand-by)Hybrid Dual SIM (Nano-SIM, dual stand-by)
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Height123.5 mm154.4 mm
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Width64 mm75 mm
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Thickness9.8 mm7 mm
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Weight122 g159 g
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ColorsBlack, Blue, Gold, Pink, WhiteAurora White, Black, Ruby Red
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Display
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Display typeCapacitive touchscreenSuper AMOLED capacitive touchscreen
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Physical size4.0 inches6.28 inches
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Resolution480 x 800 pixels1080 x 2280 pixels
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Pixel density233 ppi402 ppi
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Display colors1677721616777216
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MultitouchYesYes
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Hardware
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CPU-Octa-core
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CPUDual-core 1.0 GHz ARM Cortex-A7Quad-core 2 GHz Cortex-A73
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CPU(second)quad-core 2 GHz Cortex-A53
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ChipsetMediatek MT6572MMediatek MT6771 Helio P60
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GPUMali-400Mali-G72 MP3
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Memory RAM512 MB4, 6 GB
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Internal storage4 GB64, 128 GB
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Memory cardmicroSDmicroSD(uses second SIM slot)
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Memory card max32 GB256 GB
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OS
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OSAndroid OS, v4.4 (KitKat)Android 8.1 (Oreo)
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Main camera
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Camera type-Dual
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Main camera3.15 MP12 MP, f/1.8 , 1/2.5" , 1.4 µm
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5 MP, f/2.4
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Primary camera resolution-4032 x 3024 pixels
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Primary camera video720p1080p@30fps
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Primary camera Autofocus-dual pixel phase detection autofocus
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Primary camera flashLED flashLED flash
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Camera featuresGeo-tagging, 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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Secondary cameraVGA-
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Selfie camera24 MP
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Selfie camera resolution-5632 x 4224 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 ringtonesVibration; MP3, WAV ringtones
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Earpiece-Yes
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Multimedia
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Radio FMStereo FM radioFM 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, 802.11ac
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WLAN WiFi HotspotYesYes
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WLAN WiFi Direct-Yes
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WLAN WiFi Dual Band-Yes
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USBmicroUSB 2.0microUSB 2.0
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USB On-The-Go-Yes
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Bluetoothv4.0v5.0
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Bluetooth A2DP-Yes
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bluetooth LE-Yes
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GPSYes, with A-GPSYes, with A-GPS
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GLONASS-Yes
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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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JavaNo-
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SensorsAccelerometer, proximityFingerprint (rear-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-IonLi-Ion
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Battery capacity1400 mAh3425 mAh
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Battery removableRemovableNon-removable
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Fast battery charging-Yes
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Talk time8 h-
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Standby time180 h-
