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General

NameVivo X21iSamsung Galaxy J4 Plus-
ModelX21iGalaxy J4 Plus-

Network

Network TypeGSM / CDMA / HSPA / LTEGSM / HSPA / LTE-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMAGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-
Network 3GHSDPA 850 / 900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100-
Network 4GLTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)LTE-
Network SpeedHSPA, LTEHSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeSuper AMOLED capacitive touchscreen, 16M ColorsIPS LCD capacitive touchscreen, 16M colors-
Display Size6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio6.0 inches, 91.4 cm2 (~73.6% screen-to-body ratio)-
Display Resolution1080 x 2280 pixels, 19:9 ratio720 x 1480 pixels, 18.5:9 ratio (~274 ppi density)-
Display MultitouchYes - Funtouch OS 4.0Yes, Up to 5 Finger-
Display Density402 ppi density274 ppi pixel density-
Display Screen Protection-No-

Camera

Primary Camera12MP (f/1.8, 1/2.513 MP, f/1.9, 28mm (wide), AF-
Secondary Camera24MP5 MP, f/2.2-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaLED flash, panorama, HDR-
Video[email protected][email protected]-

Body

Body Dimensions154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in)161.4 x 76.9 x 7.9 mm (6.35 x 3.03 x 0.31 in)-
Body Weight159 g (5.61 oz)178 g (6.28 oz)-
Body ColorBlack, Aurora White, Ruby RedBlack, Gold, Pink, Blue-

Launch

Launch AnnouncementMay, 2018September, 2018-
Launch DateRelease May 19th, 2018Released October, 2018-

Platform

OS Version-Android 8.1 (Oreo) OS-
GPUMali-G72 MP3Adreno 308-
ChipsetMediatek MT6771 Helio P60Qualcomm MSM8917 Snapdragon 425 (28 nm)-
Operating SystemAndroid 8.1 Oreo--
CPUOcta-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)--

Memory

Memory Internal64GB, 128GB16 GB, 32 GB-
Memory ExternalmicroSD, up to 256GB (uses SIM 2 slot)MicroSD, Support up to 256 GB (dedicated slot)-
Ram4GB, 6GB 2GB, 3 GB-

Battery

Battery TypeNon-removable Li-Ion BatteryNon-removable Li-Ion-
Battery Capacity3425 mAh 3300 mAh-

Multimedia

Fm RadioYesYes-

Sound

AudioVibration, MP3, WAV RingtonesVibration, MP3, WAV ringtones-
LoudspeakerYesYes-
3.5mm JackYes - 32-bit/192kHz audio - Active noise cancellation with dedicated micYes-

Connectivity

WiFiWi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, HotspotWi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot-
Bluetooth5.0, A2DP, LE4.2, A2DP, LE-
USBmicroUSB 2.0, USB On-The-GoMicroUSB 2.0, USB On-The-Go-
GPSYes, with A-GPS, GLONASSYes, with A-GPS, GLONASS, BDS-

Features

SensorsFingerprint-rear-mounted, accelerometer, proximity, compass Fingerprint - side-mounted, accelerometer, gyro, proximity, compass - North America Accelerometer, proximity - other markets-
MessagingSMS(threaded view), MMS, Email, Push EmailSMS(threaded view), MMS, Email, Push Email, IM-
BrowserHTML5HTML5-
JavaNoNo-

Other

Made ByChinaKoria-
Other FeaturesFast battery charging, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Document viewer, Photo/video editorANT+ - MP4/H.264 player, - MP3/WAV/eAAC+/FLAC player, - Photo/video editor, - Document viewer-