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Oppo A37 vs Vivo Y55

2G Network SIM1: GSM 850 / 900 / 1800 / 1900 SIM2: GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800)  
Dimensions 143.1 x 71 x 7.7mm 160.80 x 73.79 x 8.42mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 136g 182 g  
Display Type IPS LCD capacitive touchscreen, 16M colors, Gorilla Glass 4 AMOLED Capacitive Touchscreen, Multitouch  
Display Size 5.0 Inches, 720 x 1280 pixels 6.44 Inches   1080 x 2400 Pixels (~409 PPI)  
Multitouch Yes
Memory 16GB built-in 128GB Built-in, 8GB RAM  
Card slot MicroSD card (Support up to 256GB) (dedicated slot) microSD Card, (supports up to 1TB)  
RAM 2GB RAM
GPRS Yes Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot  
BlueTooth Bluetooth v4.0 v5.1 with A2DP, LE  
USB USB (microUSB v2.0, USB Host) USB Type-C, USB On-The-Go  
NFC Yes  
GPS Yes Yes + A-GPS support, & GLONASS, BDS, GALILEO, QZSS  
Main Camera 8 MP, f/2.0, Auto Focus, LED Flash, 1/3.2" sensor size, 1.4 ?m pixel size, geo-tagging, touch focus, face detection, panorama, Video (1080p@30fps), Triple Camera: 50 MP, f/1.8, 26mm (wide), PDAF + 2 MP, f/2.4, (macro) + 2 MP, f/2.4, (depth), Dual LED Flash   Night, Portrait, Photo, Double Exposure, Live Photo, Panorama, Slow Motion, Time-Lapse, Pro, Video  
Front Camera 5 MP f/2.4, 1/4" sensor size 16 MP  
OS Android 5.1.1 (Lollipop) Android 12 OS  
Chipset Qualcomm MSM89 Qualcomm Snapdragon 680 4G  
Processor 1.2 GHz Quad-Core Cortex-A53 Octa core (4 x 2.4 GHz Kryo 265 + 4 x 1.9 GHz Kryo 265)  
GPU GPU: Adreno 306 Adreno 610  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (side mounted), Gyro, Proximity  
Browser HTML5 HTML5  
Sound FM radio (Not yet confirmed), 3.5mm audio jack, MP4/H.264/FLAC player, MP3/eAAC+/WAV player, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone  
Colors Various Midnight Galaxy, Ice Dawn  
Battery Non-removable (Li-Po Non removable), 5000 mAh   - Fast charging 44W  
Misc GPS + A-GPS support, Dual SIM + Micro-SIM / Nano SIM, Dual stand-by), Document viewer, Photo/video editor, Google Search, Maps, Gmail, Youtube, Calendar, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Glass front, Plastic frame, Plastic back, Active noise cancellation with dedicated mic, Document viewer, Photo/video editor