In depth comparison and review of Nokia Lumia 635 and Microsoft Lumia 640 XL. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 129.5 mm | 157.9 mm | Microsoft Lumia 640 XL has greater height than Nokia Lumia 635. |
| Width | 66.7 mm | 81.5 mm | Microsoft Lumia 640 XL has greater width than Nokia Lumia 635. |
| Depth | 9.2 mm | 9 mm | Microsoft Lumia 640 XL is narrower than Nokia Lumia 635. |
| Weight | 134 g | 171 g | Nokia Lumia 635 is lighter than Nokia Lumia 635. |
| Body Colour | Matte black | Bright green | Bright orange | White | Black | Bright yellow | Black | |
| Body Material | Polycarbonate | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.79 W/kg (body), 0.79 W/kg (head) | - | |
| Integrated Components | FM radio | FM radio | |
| Connector Type | Micro-USB - 5 pin Micro-USB Type B Headset / AV composite out - mini-phone 3.5mm |
Micro-USB - 5 pin Micro-USB Type B Headset / AV composite out - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Micro SIM | Micro SIM |
| DISPLAY | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | - | |
| Screen Size (Display Size) | 4.5" | 5.7" | Microsoft Lumia 640 XL has larger screen size than Nokia Lumia 635. |
| Screen Resolution (Display Resolution) | 480 x 854 pixels | 1280 x 720 pixels | Microsoft Lumia 640 XL has better screen resolution than Nokia Lumia 635. |
| Display Format | - | HD | |
| Pixel Density | 221 ppi | 259 ppi | Microsoft Lumia 640 XL has better pixel density than Nokia Lumia 635. |
| Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
| Display Features | ClearBlack | ClearBlack | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 3 (scratch resistant glass) | Corning Gorilla Glass 3 (scratch resistant glass) |
| PROCESSOR | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 400 | Qualcomm Snapdragon 400 | |
|---|---|---|---|
| Clock Speed | 1.2 GHz | 1.2 GHz | Both phones have the same clock speed. |
| Processor Core Qty | Quad-core | Quad-core | Both phones have the same number of phone cores. |
| MEMORY | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| RAM | 512 MB | 1 GB | Microsoft Lumia 640 XL has more RAM than Nokia Lumia 635. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 8 GB | 8 GB | Both phones have the same internal memory capacity. |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 128 GB | microSDHC, microSDXC - up to 128 GB |
| CAMERA | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution | 5 Megapixel | 13 Megapixel | Microsoft Lumia 640 XL has better camera resolution than Nokia Lumia 635. |
| Sensor Type | - | BSI | |
| Lens Aperture | F/2.4 | F/2.0 | Microsoft Lumia 640 XL has better lens aperture than Nokia Lumia 635. |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 28 mm | 28 mm | |
| Digital Zoom | 4x | 4x | Both phones have the same digital zoom. |
| Camera Modes | Panoramic pictures, landscape/portrait mode, night mode, sport mode | - | |
| White Balance | Automatic, presets | - | |
| Light Source | - | LED light | |
| Video Resolutions | 1280 x 720 (720p) | 1920 x 1080 (1080p) | |
| Camera Features (Functions) | Auto exposure, exposure compensation, Lumia Refocus | Carl Zeiss optic, Lumia Refocus |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 0 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | - | 5 Megapixel |
| BATTERY AND CHARGING | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Battery Capacity (Battery Size) | 1830 mAh | 3000 mAh | Microsoft Lumia 640 XL has larger battery capacity than Nokia Lumia 635. |
|---|---|---|---|
| Standby Time | 648 hours | 936 hours | Microsoft Lumia 640 XL has longer standby time than Nokia Lumia 635. |
| Talk Time | 840 minutes | 1818 minutes | Microsoft Lumia 640 XL has longer battery life when making calls than Nokia Lumia 635. |
| Run Time Details | Talk (GSM): up to 720 min Talk (WCDMA): up to 840 min Playback (Music): up to 58 hrs Playback (video): up to 7 hrs Active online usage (Wi-Fi): up to 9.4 hrs Active online usage: up to 8.8 hrs |
Talk (GSM): up to 1878 min Talk (WCDMA): up to 1422 min Playback (video): up to 11.7 hrs Playback (Music): up to 102 hrs Active online usage (Wi-Fi): up to 14.3 hrs Standby: up to 936 hrs |
|
| Battery Technology | Lithium Ion | Lithium Ion |
| CELLULAR | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 3G | Nokia Lumia 635 has more advanced generation mobile network. |
| Operating System | Windows Phone OS 8.1 with Lumia Cyan update | Windows Phone OS 8.1 with Lumia Denim update | |
| Intelligent Assistant | Cortana | - | |
| Navigation | A-GPS, GLONASS, BeiDou | A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+ | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 4G LTE Band | Band 2, Band 4, Band 5, Band 7, Band 17 | - | |
| 4G LTE Frequency | FDD 1900 PCS, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 700b | - | |
| Wireless Interface | IEEE 802.11b/g/n | IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 4.0 | Bluetooth 4.0 | |
| Bluetooth Profiles | HFP, OPP, A2DP, AVRCP, PBAP, GATT | HFP, OPP, PAN, A2DP, AVRCP, HID, PBAP, MAP, GATT | |
| NFC | - | Yes | Microsoft Lumia 640 XL has NFC reader for mobile payments. |
| WLAN Security | WEP, WPA, WPA2, TKIP, AES | WEP, WPA, WPA2, TKIP, AES | |
| Communication Features | Mobile Email client, Internet browser, LTE Cat.3 | Mobile Email client, Internet browser | |
| Messaging Services | Skype, WhatsApp, SMS, MMS | Skype, WhatsApp, SMS, MMS |
| MEDIA | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Supported Digital Audio Standards | WMA, AAC, ASF, AMR, MP3, AAC-LC, M4A | AAC, AMR, MP3 | |
|---|---|---|---|
| Supported Digital Video Standards | VC-1, AVC, MPEG-4, WMV, 3GP, H.264, H.263, 3G2 | VC-1, AVC, MPEG-4, WMV, H.264, H.263 |
| FEATURES | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer | Accelerometer, ambient light sensor, proximity sensor, magnetometer | |
| Personal Information Management | Calendar, synchronization with PC, calculator, reminder, alarm clock | Calendar, synchronization with PC, calculator, reminder, alarm clock | |
| Additional Phone Features | TTY compatible, DLNA Certified, Text-to-Speech (text recognition), software updates FOTA (Firmware Over The Air), multitasking, sharing media via DLNA, Kid's Corner, Noise Cancellation Technology, Lumia Color profile, Wireless Emergency Alerts function, SensorCore technology, Projection Screen, Alarm Clock | TTY compatible, DLNA Certified, Text-to-Speech (text recognition), sharing media via DLNA, Kid's Corner, Noise Cancellation Technology, Lumia Color profile, Word Flow keyboard, Power Saving Mode, SensorCore technology |
| OTHERS | Nokia Lumia 635 | Microsoft Lumia 640 XL |
|---|
| Included Accessories | Power adapter | Headphones, power adapter | |
|---|---|---|---|
| Compliant Standards | HAC (Hearing Aid Compatible), SSL v3, TLS v1.2, TLS v1.0, TLS v1.1, Suite B ciphers | - | |
| Compatible with Windows 7 | "Compatible with Windows 7" software and devices carry Microsoft’s assurance that these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7. | - |
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