Nokia Lumia 635 is a 4.5 inch screen smartphone powered by 1.2Ghz Quad-core processor.
| Type | IPS-LCD, FWVGA |
| Resolution | 854 x 480 pixels |
| Pixel Density | 221 ppi |
| Screen Size | 4.5 inches |
| Processor | Quad Core 1.2 GHz, Qualcomm Snapdragon 400 |
| Operating System | Windows 8.1 |
| RAM | 512 MB |
| Internal Memory | 8 GB |
| Expandable | 128 GB, MicroSD |
| Rear Camera | 5 MP, Camera digital zoom: 4 x, Touch focus, Landscape orientation, Full screen viewfinder, Geotagging, Automatic photo upload to web services, Full resolution photo |
| Front Camera | No |
| Image Stablizer | No |
| Flash | Yes |
| Video Recording | Yes |
| Design | Bar |
| Size | 129.5 x 66.7 x 9.2 mm |
| Weight | 134 grams |
| Capacity | 1830 mAh |
| Type | Removable |
| Talktime | 12 hrs |
| Standby Time | 648 hrs |
| Radio | Yes, Internet Radio |
| Media Player | Yes, MP3, AAC LC, AMR-NB, WMA 9, GSM FR, HE-AAC, HE-AACv2, WMA 10 Pro |
| Video Player | Yes, MP4, AAC, MP3, M4A, WMA, 3G2, AMR, 3GP, ASF |
| Network | 2G, GSM 850 / 900 / 1800 / 1900 |
| GSM/CDMA | GSM |
| Bluetooth | 4.0 |
| WiFi | Yes, 802.11 b/g/n |
| Internet | EDGE |
| GPS | With A-GPS |
| USB | Micro |
| HDMI | No |
| Headphone Connector | 3.5 mm |
| SIM | Single |
| NFC | No |
| Sensors | |
| Built in Applications | Yes, Personal information management features, Business apps: Lync (Corporate IM) free download, Office apps: Excel, Word, Powerpoint, OneNote, OneDrive storage for documents and notes, Adobe Reader free download, Gmail, Nokia Mail, MS Exchange Active Sync |
| Warrenty | 1 Year |
| Keypad | Touchscreen, Capacitive Multipoint-Touch |