Product
Vivo Y21a
Vivo Y21a
Samsung Galaxy J2 Pro (2018)
Samsung Galaxy J2 Pro (2018)
Battery
Charging 18W wired 2.5W reverse wired -
Music play - Up to 60 h
Talk time - Up to 18 h (3G)
Type 5000 mAh Li-Ion 2600 mAh, removable
Body
Build Glass front, plastic frame, plastic back Glass front (Gorilla Glass), plastic back
Dimensions 164.3 x 76.1 x 8 mm (6.47 x 3.00 x 0.31 in) 143.8 x 72.3 x 8.4 mm (5.66 x 2.85 x 0.33 in)
SIM Nano-SIM + Nano-SIM Dual SIM (Micro-SIM, dual stand-by)
Weight 182 g (6.42 oz) 153 g (5.40 oz)
Comms
Bluetooth 5.0, A2DP, LE 4.2, A2DP
NFC No No
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, BDS
Radio FM radio FM radio
USB USB Type-C 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Protection - Corning Gorilla Glass (unspecified version)
Resolution 720 x 1600 pixels, 20:9 ratio (~270 ppi density) 540 x 960 pixels, 16:9 ratio (~220 ppi density)
Size 6.51 inches, 102.3 cm2 (~81.8% screen-to-body ratio) 5.0 inches, 68.9 cm2 (~66.3% screen-to-body ratio)
Type IPS LCD Super AMOLED
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Accelerometer, proximity
Launch
Announced 2022, January 22 2018, January. Released 2018, January
Status Available. Released 2022, February 14 Discontinued
Main Camera
Dual 13 MP, f/2.2, (wide), PDAF 2 MP, f/2.4, (macro) -
Features LED flash LED flash, HDR, panorama
Single - 8 MP, f/2.2, AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 64GB 4GB RAM 16GB 1.5GB RAM, 16GB 2GB RAM
  - eMMC 5.1
Misc
Colors Midnight Blue, Diamond Glow Black, Gold, Blue, Pink
Models - SM-J250F, SM-J250G, SM-J250F, SM-J250M, SM-J250Y
SAR - 0.51 W/kg (head)     1.20 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 5, 8, 38, 40, 41 1, 3, 5, 7, 8, 20, 38, 40 - Asia, Russia
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  - 1, 5, 8, 38, 40 - India
Platform
Chipset Mediatek MT6762 Helio P22 (12 nm)Mediatek MT6765 Helio P35 (12 nm) - Egypt Qualcomm MSM8917 Snapdragon 425 (28 nm)
CPU Octa-core 2.0 GHz Cortex-A53Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) - Egypt Quad-core 1.4 GHz Cortex-A53
GPU PowerVR GE8320 Adreno 308
OS Android 11, Funtouch 11.1 Android 7.1 (Nougat), upgradable to Android 8.0 (Oreo)
Selfie camera
Features HDR LED flash
Single 8 MP, f/1.8, (wide) 5 MP, f/2.2
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes