vivo Y81 has Android 8.1 (Oreo), It offers an internal memory of 32 GB with 3&4 GB RAM, It presents a screen of HD+ resolution, And it comes with a battery capacity of 3260 mAh .
vivo Y81 specifications
General
6497 Announce date : June, 2018
6497 Release date : June, 2018
6497 Height × Width : 155.1 mm x 75 mm (6.11 x 2.95 in)
6497 Thickness : 7.8 mm (0.31 in)
6497 Weight : 145.5 g (5.15 oz)
6497 SIM : Dual SIM (Nano-SIM, dual stand-by)
6497 Colors : Black, Gold
6497 Build : Front glass, plastic body
Display
6497 Display type : IPS LCD capacitive touchscreen, 16M colors
6497 Screen size : 6.22 inches (~83.0% screen-to-body ratio)
6497 Resolution : 720 x 1520 pixels [ HD+ resolution ]
6497 Pixel density : (~270 ppi pixel density)
6497 Multitouch feature : yes
6497 Funtouch OS 4.0 : yes
6497 Protection : Corning Gorilla Glass (unspecified version)
Camera & Video
6497 Rear camera : 13 MP, f/2.2, PDAF
6497 Camera features : LED flash, HDR, panorama
6497 Video : 1080p@30fps [ Full HD video ]
6497 Front camera : 5 MP, f/2.2
Memory
6497 Expandable memory : Card slot microSD, up to 256 GB
6497 Internal Memory : 32 GB
6497 RAM : 3&4 GB RAM
Battery
6497 Battery type : Non-removable Li-Po
6497 Battery capacity : 3260 mAh
Platform
6497 Operating System : Android 8.1 (Oreo)
6497 Chipset : Mediatek MT6762 Helio P22 (12 nm)
6497 Processor : Octa-core 2.0 GHz Cortex-A53
6497 Graphics : PowerVR GE8320
Network
6497 2G bands : GSM 850 /900 /1800 /1900 – SIM 1 & SIM 2 & CDMA 800 &
6497 2G bands : TD-SCDMA
6497 3G bands : HSDPA 850 / 900 / 2100
6497 4G bands : LTE & LTE – India (Band 40)
6497 Speed : HSPA, LTE
6497 GPRS : yes
6497 EDGE : yes
Sound
6497 Alert types : Vibration, MP3, WAV ringtones
6497 Loudspeaker : yes
6497 3.5 mm jack : yes
6497 Active noise cancellation with dedicated mic : yes
CONNECTIVITY
6497 WLAN : WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
6497 Bluetooth : 5.0, A2DP, LE
6497 GPS : yes, with A-GPS, GLONASS, BDS
6497 USB : MicroUSB 2.0
Features
6497 Sensors : Fingerprint (rear-mounted) – only 4 GB model, Accelerometer,
6497 Sensors : Compass, Proximity
6497 Messaging : SMS (threaded view), MMS, Email, Push Email, IM
6497 Browser HTML5 : yes
6497 MP3/WAV/eAAC+/FLAC player : yes
6497 MP4/H.264 player : yes
6497 Document viewer : yes
6497 Photo/video editor : yes
vivo Y81 disadvantages
6497 Radio : No
6497 Removable battery : No
6497 Water & Dust resistant : No
6497 Fast battery charging : No