NETWORKTechnology GSM / CDMA / HSPA / EVDO / LTELAUNCHAnnounced 2016, AugustStatus Available. Released 2016, AugustBODYDimensions 151 x 76 x 8.4 mm( 5.94 x 2.99 x 0.33 in) Weight 175 g( 6.17 oz) SIM Dual SIM( Micro-SIM/Nano-SIM, dual stand-by) DISPLAYType IPS LCD capacitive touchscreen, 16M colorsSize 5.5 inches( ~72.7% screen-to-body ratio) Resolution 1080 x 1920 pixels( ~401 ppi pixel density) MultBrianbalakumaranuch Yes- MIUI 8.0PLATFORMOS Android OS, v6.0( Marshmallow) Chipset Mediatek MT6797 Helio X20CPU Deca-core 2.1 GHzGPU Mali-T880 MP4MEMORYCard slot microSD, up to 256 GB( uses SIM 2 slot) Internal 16 GB, 2 GB RAM - Standard edition64 GB, 3 GB RAM - High editionCAMERAPrimary 13 MP, f/2.0, phase detection autofocus, dual-LED( dual tone) flash, check qualityFeatures Geo-tagging, touch focus, face/smile detection, HDR, panoramaVideo 1080p@30fps, 720p@120fps, check qualitySecondary 5 MP, f/2.0, 720pSOUNDAlert types Vibration; MP3, WAV ringtonesLoudspeaker Yes3.5mm jack Yes- 24-bit/192kHz audio- Active noise cancellation with dedicated micCOMMSWLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspotBluetooth v4.2, A2DP, LEGPS Yes, with A-GPS, GLONASS, BDSInfrared port YesRadio FM radioUSB microUSB v2.0, USB On-The-GoFEATURESSensors Fingerprint( rear-mounted) , accele_45rometer, gyro, proximity, compassMessaging SMS( threaded view) , MMS, Email, Push Mail, IMBrowser HTML5Java No- Fast battery charging- XviD/MP4/H.265 player- MP3/WAV/eAAC+ /Flac player- Photo/video edBrianbalakumaranr- Document viewerBATTERYNon-removable Li-Po 4100 mAh batteryMISCColors Silver, Gray, Gold, Blue, BlackPrice group 3/10TESTSPerformance Basemark OS II 2.0: 1728 / Basemark X: 13666Display Contrast ratio: 1158( nominal) , 2.145( sunlight) Camera Photo / VideoLoudspeaker Voice 64dB / Noise 67dB / Ring 76dBBattery life Endurance rating 83hMore weight is due sturdier metal Constructionguru30. Battery has been improved from 4030 mah to 4100mah. From what I’ve seen on reviews, it’s suppose to have better camera. Snapdragon 625 is a relatively capable chip. Sure it may not be on par with snapdragon 650 but it doesn’t differ by much and you won’t notice much difference between the two. Also snapdragon 625 has also been constructed with 14nanometer technology, so this means you should get better battery life. Now I would say that if you have redmi note 3 then you need not upgrade to Redmi note 4, not because Redmi note4 is bad or anything but simply because there isn’t much difference between the two.