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Microsoft Lumia 640 Dual SIM vs Vivo Y35

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 / 2100  
4G Network LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800)  
Dimensions 141.3 x 72.2 x 8.8 mm 164.3 x 76.1 x 8.3 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 145 g 188 g  
Display Type IPS LCD capacitive touchscreen, 16M colors, ClearBlack display Capacitive IPS LCD Touchscreen, 16M Colors   90Hz, 550 nits (HBM)  
Display Size 5.0 inches (~67.6% screen to body ratio), 720 x 1280 pixels (~294 ppi pixel density) 6.58 Inches   1080 x 2408 Pixels (~401 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3
Memory 8GB built-in 128GB Built-in, 8GB RAM (+8GB of Extended RAM )  
Card slot microSD card (supports up to 128GB) microSDXC (dedicated slot)  
RAM 1GB 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 with A2DP v5.0 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C 2.0, USB On-The-Go  
NFC No  
GPS Yes Yes + A-GPS support, & GLONASS, BDS, GALILEO, QZSS  
Main Camera 8 MP, 3264 x 2448 pixels, autofocus, LED flash, 1/4'' sensor size, Video (1080p@30fps), Triple Camera: 50 MP, f/1.8, (wide), PDAF + 2 MP, f/2.4, (macro) + 2 MP, f/2.4, (depth), LED Flash   Night (front and rear), Portrait, Photo, Video, High Resolution, Panorama, Live Photo, Slow Motion, Time-Lapse, Pro, Documents, Double Exposure, Video (1080p@30fps)  
Front Camera 1 MP, 720p 16 MP, f/2.0, (wide), HDR, Video 1080p@30fps)  
OS Microsoft Windows Phone 8.1 with Lumia Denim Android 11 OS  
Chipset Qualcomm Snapd Qualcomm SM6225 Snapdragon 680 4G (6 nm)  
Processor 1.2 GHz Quad-Core Cortex-A7 Octa-core (4 x 2.4 GHz Kryo 265 Gold + 4 x 1.9 GHz Kryo 265 Silver)  
GPU GPU: Adreno 305 Adreno 610  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (side mounted), Gyro, Proximity  
Browser HTML5 HTML5  
Sound Stereo FM radio with RDS, 3.5mm audio jack, MP4/H.264/H.263/WMV player, MP3/WAV/eAAC+/WMA player, Video/photo editor, Games (built-in) 3.5mm Audio Jack, 24-bit/192kHz audio, Speaker Phone  
Colors Glossy cyan, Orange, White, Matte black Dawn Gold, Agate Black  
Battery 30 min 2500 mAh (Li-Po Non removable), 5000 mAh   - Fast charging 44W, 70% in 34 min (advertised), Reverse charging  
StandBy Time Stand-by up to 840 hrs
TalkTime Talk-time up to 27 hrs
Misc GPS + A-GPS support, GPU, Dual SIM (Micro-SIM, dual stand-by), Active noise cancellation with dedicated mic, Document viewer/editor, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Glass front, Plastic frame, Plastic back, IP5X (dust), IPX4 (water) resistance, Document viewer, Photo/video editor