vivo X21 UD has Android 8.1 ( Oreo ) , It offers an internal memory of 128 GB with 6 GB RAM , It presents a screen of Full HD+ resolution , And it comes with a battery capacity of 3200 mAh .
vivo X21 UD specifications
General
6420 Announce date : March , 2018
6420 Release date : March , 2018
6420 Height × Width : 154.5 mm x 74.8 mm ( 6.08 x 2.94 in )
6420 Thickness : 7.4 mm ( 0.29 in ) [ The average in this size : 8.8 mm ]
6420 Weight : 156.2 g ( 5.50 oz ) [ The average in this size : 200 g ]
6420 SIM : Hybrid Dual SIM ( Nano-SIM , dual stand-by )
6420 Colors : Black , Ruby Red
6420 Build : Front glass , aluminum body
vivo X21 UD
Display
6420 Display type : Super AMOLED capacitive touchscreen , 16M
6420 colors
6420 Screen size : 6.28 inches (~85.2% screen-to-body ratio) [ The average
6420 in market : 5.2 inches ]
6420 Resolution : 1080 x 2280 pixels [ Full HD+ resolution ]
6420 Pixel density : (~402 ppi pixel density) [ The average in this size : 490 ppi
6420 pixel density ]
6420 Multitouch feature : yes
6420 Funtouch OS 4.0 : yes
Camera & Video
6420 Rear camera : Dual : 12 MP (f/1.8 , 1/2.5″ , 1.4 µm, Dual Pixel PDAF)
6420 + 5 MP (f/2.4) , phase detection autofocus, LED flash [ The average in
6420 this size : 15 MP ]
6420 Camera features : Geo-tagging , touch focus , face detection , HDR ,
6420 panorama
6420 Video : 1080p@30fps [ Full HD video ]
6420 Front camera : 12 MP , f/2.0 , 1080p [ The average in this size : 6 MP ]
Memory
6420 Expandable memory : Card slot microSD, up to 256 GB ( uses SIM 2
6420 slot )
6420 Internal Memory : 128 GB [ The average in this size : 96 GB ]
6420 RAM : 6 GB RAM [ The average in this size : 5 GB RAM ]
Battery
6420 Battery type : Non-removable Li-Ion
6420 Battery capacity : 3200 mAh [ The average in this size : 3350 mAh ]
Platform
6420 Operating System : Android 8.1 ( Oreo )
6420 Chipset : Qualcomm SDM660 Snapdragon 660
6420 Processor : Octa-core (4×2.2 GHz Kryo 260 & 4×1.8 GHz Kryo 260)
6420 Graphics : Adreno 512
Network
6420 2G bands : GSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2 & CDMA
6420 800 & TD-SCDMA
6420 3G bands : HSDPA 850 / 900 / 1900 / 2100
6420 4G bands : LTE & LTE – India ( Band 40 )
6420 Speed : HSPA , LTE
6420 GPRS : yes
6420 EDGE : yes
Sound
6420 Alert types : Vibration , MP3 , WAV ringtones
6420 Loudspeaker : yes
6420 3.5 mm jack : yes
6420 32-bit/192kHz audio : yes
6420 Active noise cancellation with dedicated mic : yes
CONNECTIVITY
6420 WLAN : Wi-Fi 802.11 a/b/g/n/ac , dual-band , Wi-Fi Direct , hotspot
6420 Bluetooth : 5.0 , A2DP , LE
6420 GPS : yes , with A-GPS , GLONASS
6420 USB : MicroUSB 2.0 , USB On-The-Go
6420 Radio : FM radio
Features
6420 Sensors : Fingerprint ( under display ) , Accelerometer , Compass ,
6420 Proximity , Gyro , Ambient light sensor
6420 Messaging : SMS ( threaded view ) , MMS , Email , Push Mail
6420 Browser HTML5 : yes
6420 MP3/WAV/eAAC+/FLAC player : yes
6420 MP4/H.264 player : yes
6420 Document viewer : yes
6420 Photo/video editor : yes
6420 Fast battery charging : yes
vivo X21 UD disadvantages
6420 Java : No
6420 Removable battery : No
6420 Temperature sensor : No
6420 *** [ The averages are calculated for all phones released in 2016 & 2017
6420 ( for each size alone ) ]