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Nokia Lumia 635 vs Nokia 6

2G Network GSM: 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE 800 / 1800 / 2600 LTE band 1(2100), 3(1800), 5(850), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 129.5 x 66.7 x 9.2 mm 154 x 75.8 x 7.9 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 134 g 169 g  
Display Type 16M colors, IPS LCD capacitive touchscreen, ClearBlack display IPS LCD capacitive touchscreen, 16M colors, Multitouch  
Display Size 480 x 854 pixels, 4.5 inches (~218 ppi pixel density) 1080 x 1920 pixels (~403 PPI pixel density)  
Multitouch Yes
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 3  
Memory 8GB built-in 32GB Built-in, 3GB RAM  
Card slot microSD card (supports up to 128GB) microSD Card, (supports upto 256GB)(uses SIM 2 slot)  
RAM 512MB RAM
GPRS Yes Yes
EDGE Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot  
BlueTooth Bluetooth v4.0 with A2DP v4.0 with A2DP  
USB USB (microUSB v2.0) microUSB v2.0, USB On-The-Go  
NFC Yes  
GPS Yes Yes + A-GPS support & Glonass  
Main Camera 5 MP, 2592 x 1936 pixels, autofocus, 1/4'' sensor size, Geo-tagging, panorama, Video (720p@30fps) f/2.0, phase detection, 1.0 um pixel size, Geo-tagging, touch focus, face detection, panorama, HDR, Video ([email protected])  
Front Camera 8 MP, f/2.0, 1.12 um pixel size, 1080p  
OS Microsoft Windows Phone 8.1 Android v7.1 (Nougat)  
Chipset GPU: Adreno 30 Qualcomm MSM8937 Snapdragon 430  
Processor 1.2 GHz Quad-core Cortex-A7, Qualcomm Snapdragon 400 1.4 GHZ Octa-core Cortex-A53  
GPU GPU: Adreno 305 Adreno 505  
Sensors Accelerometer, proximity Accelerometer, proximity, Compass, Fingerprint (front-mounted)  
Browser HTML5 HTML5  
Sound FM radio, 3.5mm audio jack, MP4/H.264/H.263/WMV player, MP3/WAV/eAAC+/WMA player, Video/photo editor, SNS integration, Games (built-in) 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone  
Colors Bright Orange, bright green, bright yellow, white, black Arte Black, Matte Black, Tempered Blue, Silver, Copper  
Battery Talk time up to 12hrs Stand-by up to 684hrs Music play up to 58hrs 1830 mAh - Fast battery charging  
StandBy Time Talk time up to 12hrs Stand-by up to 684hrs Music play up to 58hrs 1830 mAh
Misc GPS + A-GPS support and GLONASS, Dual sim, 7GB free SkyDrive storage, Document viewer/editor, Predictive text input, Active noise cancellation with dedicated mic, Speakerphone Dolby Atmos sound enhancement, Active noise cancellation with dedicated mic, Document viewer/editor, Photo/video editor