Oppo A7X vs Vivo Y31t
Price
280 USD
280 USD
Status
Discontinued
Available
Brand
Oppo Mobiles
Vivo Mobiles
Model No
A7X
vivo Y31t
Launch Date
2018, September 01
2026, August 19
Website
Technology
GSM / CDMA / HSPA / EVDO / LTE
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 ,CDMA 800 & TD-SCDMA
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1900 / 2100 ,CDMA2000 1xEV-DO
HSDPA 850 / 900 / 2100
4G bands
1, 3, 5, 7, 8, 34, 38, 39, 40, 41
LTE
Speed
HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat13 600/100 Mbps
HSPA, LTE, 5G
5G bands
SA/NSA
Dimensions
156.7 x 74 x 8 mm (6.17 x 2.91 x 0.31 in)
166.6 x 78.4 x 8.4 mm (6.56 x 3.09 x 0.33 in)
Weight
169 g (5.96 oz)
219 g (7.72 oz)
Build
Glass front (Gorilla Glass 5), plastic back, plastic frame
Glass front, plastic frame, plastic back
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
SIM
Dual SIM (Nano-SIM, dual stand-by)
Nano-SIM + Nano-SIM
Colors
Starry Purple, Ice Flame Blue
Crimson Red, Seashore Green, Golden Mist
Type
LTPS IPS LCD capacitive touchscreen, 16M colors
IPS LCD, 120Hz, 1000 nits (HBM), 1200 nits (peak)
Size
6.3 inches, 97.4 cm2 (~84.0% screen-to-body ratio)
6.75 inches, 109.6 cm2 (~83.9% screen-to-body ratio)
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
720 x 1608 pixels, 20:9 ratio (~261 ppi density)
OS
Android 8.1 (Oreo), ColorOS 5.2
Android 16, OriginOS 6
Chipset
Mediatek MT6771 Helio P60 (12 nm)
Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
CPU
Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Octa-core (2x2.2 GHz Cortex-A78 & 6x1.95 GHz Cortex-A55)
GPU
Mali-G72 MP3
Adreno 613
RAM
4GB
4GB/6GB
Storage
64GB/128GB
128GB/256GB
Card Slot
microSDXC (dedicated slot)
Lens 1
16 MP, f/1.8, 1/3.1, 1.0µm, PDAF
50 MP, f/1.8, (wide), PDAF
Lens 2
2 MP, f/2.4, (depth)
Auxiliary lens
Features
LED flash, HDR, panorama
LED flash, HDR, panorama
Video
1080p@30fps
1080p@30fps
Lens 1
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
8 MP, f/2.1, (wide)
Features
HDR
Video
1080p@30fps
1080p@30fps
Capacity
Non-removable Li-Po 3500 mAh battery
Si/C Li-Ion 7200 mAh
Charging
Charging 10W
44W wired
Reverse wired
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (side-mounted), accelerometer, proximity, compass
Loudspeaker
Yes
Yes, with stereo speakers
3.5mm jack
Yes
WLAN
Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
4.2, A2DP, LE
4.2, A2DP, aptX Adaptive
GPS
Yes, with A-GPS, GLONASS, BDS
GPS, GALILEO, GLONASS, BDS, QZSS
Radio
FM radio
USB
microUSB 2.0, USB On-The-Go
USB Type-C 2.0, OTG