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HTC Butterfly 2 vs Vivo Y28 8GB

2G Network 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 700 / 900 / 1800 / 2100 / 2600 LTE band 1(2100), 3(1800), 5(850), 8(900), 28(700), 38(2600), 40(2300), 41(2500)  
Dimensions 145.4 x 70.2 x 10 mm 165.7 x 76 x 8 mm  
Sim Type Dual Sim, Hybrid Dual SIM (Nano-SIM)  
Weight 151 g 199 g  
Display Type Capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 760 nits (typ), 1000 nits (HBM)  
Display Size 1080 x 1920 pixels, 5.0 inches (~441 ppi pixel density), Corning Gorilla Glass 2, 6.68 Inches   720 x 1608 Pixels (~264 PPI)  
Multitouch Yes
Memory 16/32GB built-in 128GB Built-in, 8GB RAM (+8GB Extended RAM), UFS 2.2  
Card slot microSD card (supports up to 128GB) microSDXC (uses shared SIM slot)  
RAM 2GB RAM
GPRS Yes Yes
WLAN WLAN (Wi-Fi 802.11 a/b/g/n/ac Wi-Fi 802.11 a/b/g/n, dual-band  
BlueTooth Bluetooth v4.0 v5.0 with A2DP, LE  
USB USB (microUSB v2.0 (MHL)) USB Type-C 2.0, OTG  
NFC No  
GPS Yes Yes + AGPS, GLONASS, BDS, GALILEO  
Main Camera 13MP, 3264x2448 pixels, 4128 x 3096 pixels, autofocus, dual-LED flash, face and smile detection, panorama, HDR, Video 1080p@30fps, stereo sound rec, Dual Camera: 50 MP, f/1.8, (wide), PDAF + 2 MP, f/2.4, (depth), LED Flash   Geo-tagging, Phase detection, Panorama, HDR, Video (1080p@30fps)  
Front Camera 5 MP, 1080p@30fps, HDR 8 MP, f/2.1, (wide), Video (1080p@30fps)  
OS Android OS, v4.4.2 (KitKat) Android 14 OS  
Chipset GPU: Adreno 33 MediaTek Helio G85 SoC  
Processor 2.5 Quad-Core GHz Krait 400, Qualcomm Snapdragon 801 2.0 Ghz Octa Core  
GPU GPU: Adreno 330 Mali G57 MP2  
Sensors Accelerometer, gyro, proximity, compass, barometer Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5 HTML5  
Sound 3.5mm audio jack, MP3/eAAC+/WMA/WAV player, MP4/H.263/H.264/WMV player, Dropbox (25 GB storage), TV-out (via MHL A/V link), SNS integration, YouTube, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone   Smartphone deals
Colors Blue, Red, White Agate Green, Gleaming Orange  
Battery Non-removable Li-Po 2700mAh (Non removable), 6000 mAh   - Fast battery 44W wired  
Misc GPS + A-GPS support & GLONASS, Active noise cancellation with dedicated mic, Document editor, Photo viewer/editor, Google Search, Maps, Gmail, Voice memo/dial/commands, Predictive text input, YouTube, Calendar, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Notification LED round light on the back, Glass front, plastic frame, plastic back, IP64 dust/water resistant, Document viewer, Photo/video editor