Microsoft
Side-by-side technical data
Microsoft Lumia 640 XL LTE vs Microsoft Surface Duo
Compare up to four phones using typed, normalized technical data. Measurements stay numeric, capabilities stay boolean, and options stay comparable.
The verdict
Your pick: Microsoft Surface Duo, ahead on Design & display, Performance & hardware, Camera, Connectivity and Battery & charging.
| Category | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Design & display | 4.5 | 6.5 |
| Performance & hardware | 1.2 | 5.4 |
| Camera | 3.5 | 3.7 |
| Connectivity | 3.8 | 5.7 |
| Battery & charging | 2.2 | 3.2 |
Which one is for you?
Microsoft Lumia 640 XL LTE, if you care about…
- Weight
- 171 g
- against 250 g
- Expandable Storage
- Yes
- against No
Microsoft Surface Duo, if you care about…
- Battery Capacity
- 3,577 mAh
- against 3,000 mAh
- RAM Capacity
- 6 GB
- against 1 GB
- Wi-Fi Standards
- Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 802.11a/b/g/n/ac
- against Wi-Fi 802.11 b/g/n
- Storage Type
- UFS 3.0
- against eMMC 4.5
Specification comparison
Battery
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Battery Efficiency Rating | — | — |
| Battery Capacity | 3,000 mAh | 3,577 mAh Best value |
| Battery Type | Li-Ion | Li-Polymer |
| Fast Charge Power | — | 18 W |
| Battery Features | — | Fast Charging, Non-Removable, Rechargeable, Battery Level Indicator |
| Battery Endurance | — | — |
| Wireless charging power | — | — |
| Charge cycles | — | — |
| Talk time | 31.333 h | — |
| Standby time | 936 h | — |
| Music playback time | — | — |
Design
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Body Colors | Cyan, Orange, Black, White | White |
| Body Thickness | 9 mm | 4.8 mm Best value |
| Body Width | 81.5 mm | 93.3 mm |
| Body Height | 157.9 mm | 145.2 mm |
| Weight | 171 g Best value | 250 g |
| Usable Surface | 69.1 % | 80 % Best value |
| Body Materials | — | — |
| Resistance Features | — | — |
| Waterproof Depth | — | — |
| Drop Resistance Class | — | — |
| Repairability Class | — | — |
| Foldable | No | Yes |
| Rugged Build | No | No |
| Drop Test Count | — | — |
| Unfolded thickness | — | — |
| QWERTY keyboard | — | — |
Performance
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Processor Model | Qualcomm Snapdragon 400 | Qualcomm Snapdragon 855 |
| Processor Process Size | 28 nm | 7 nm Best value |
| Graphics GPU | Qualcomm Adreno 305 | Qualcomm Adreno 640 |
| Storage Type | eMMC 4.5 | UFS 3.0 Best value |
| Maximum CPU Clock | 1.2 GHz | 2.84 GHz Best value |
| Maximum Storage Capacity | 8 GB | 256 GB Best value |
| AnTuTu Score | — | 572,200 |
| Geekbench 6 Single-Core | — | — |
| Geekbench 6 Multi-Core | — | — |
| CPU Description | Quad-core 1.2 GHz Cortex-A7 | 1x Kryo 485 at 2.84 GHz + 3x Kryo 485 at 2.4 GHz + 4x Kryo 485 at 1.8 GHz |
| Processor Type | Quad-Core | Octa-Core |
| 64-Bit Processor | — | Yes |
| RAM Capacity | 1 GB | 6 GB Best value |
| RAM Type | — | LPDDR4X |
| Expandable Storage | Yes Best value | No |
| AnTuTu version | — | v10 |
| 3DMark Wild Life Extreme | — | — |
| Maximum memory card | — | — |
Sensors
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Fingerprint Sensor Placement | — | Side |
Display
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Display Aspect Ratio | 16:9 | 4:3 |
| Peak Display Brightness | — | — |
| Display Technology | IPS LCD | AMOLED Best value |
| Display Diagonal | 5.7″ Best value | 5.6″ |
| Display Horizontal Resolution | 720 px | 1,350 px Best value |
| Display Vertical Resolution | 1,280 px | 1,800 px Best value |
| Display Pixel Density | 259 ppi | 401 ppi Best value |
| Display Refresh Rate | — | — |
| Touch Sampling Rate | — | — |
| Display Contrast Ratio | 1,119 :1 | — |
| Display Features | ClearBlack Display, Gorilla Glass 3, IPS LCD | Water Drop Notch, HDR10, Scratch Resistant, Gorilla Glass, Capacitive Touch, Multi-Touch, Frameless, Foldable Display, Touchscreen |
| Integrated Projector | No | No |
| Projector Brightness | — | — |
| Projector Horizontal Resolution | — | — |
| Projector Vertical Resolution | — | — |
| Cover display diagonal | — | — |
| Cover display refresh rate | — | — |
| Cover display peak brightness | — | — |
| Display colors | — | — |
Sensor
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Sensor Features | Accelerometer, Proximity Sensor, Compass | Fingerprint Sensor, Accelerometer, Gyroscope, Hall Sensor, Light Sensor, Proximity Sensor, Compass |
Software
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Operating System | Windows Phone 8.1 | Android 11 |
| OS Family | Windows Phone | Android |
| OS Version | 8.1 | 11 |
| OS Update Support | — | — |
| Direct OS Updates | — | No |
| Google Services | — | Yes |
| Web browser | — | — |
| Java (J2ME) | — | — |
Connectivity
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| SIM Configurations | Dual Micro-SIM, Dual SIM Dual Standby | Dual SIM Dual Standby, Nano-SIM + eSIM, Single SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B850, 3G UMTS B900, 3G UMTS 1700 AWS, 3G UMTS 1900, 3G UMTS 2100, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B12, 4G LTE B17, 4G LTE B20, LTE B28, 4G LTE B38, 4G LTE B40 | 2G GSM 1900, 2G GSM 1800, 2G GSM 850, 2G GSM 900, 3G UMTS B1, 3G UMTS B2, 3G UMTS B5, 3G UMTS B8, 4G LTE B1, 4G LTE B2, 4G LTE B3, 4G LTE B4, 4G LTE B5, 4G LTE B7, 4G LTE B8, 4G LTE B12, 4G LTE B13, 4G LTE B14, 4G LTE B19, 4G LTE B20, 4G LTE B25, 4G LTE B26, 4G LTE B28A, 4G LTE B28B, 4G LTE B29, 4G LTE B30, 4G LTE B38, 4G LTE B39, 4G LTE B40, 4G LTE B41, 4G LTE B46, 4G LTE B66 |
| Cellular Technologies | GSM, HSPA, LTE | 4G, LTE, 5G Best value |
| Wi-Fi Standards | Wi-Fi 802.11 b/g/n | Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 802.11a/b/g/n/ac Best value |
| Wi-Fi Features | DLNA, Wi-Fi Hotspot | Dual Band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display |
| Bluetooth Version | Bluetooth 4.0 | Bluetooth 5.0 Best value |
| Bluetooth Profiles | A2DP | A2DP, HFP, HID, HS, LE, MAP, PAN, OPP, PBAP/PAB, HOGP, aptX |
| Navigation Systems | GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, QZSS, Galileo Best value |
| Connectivity Features | 3.5 mm Audio Jack, NFC, FM Radio, microUSB | 3.5 mm Audio Jack, Computer Sync, DLNA, eSIM, OTA Sync, Tethering, USB Charging, USB Mass Storage, USB OTG, USB Type-C |
| USB Version | USB 2.0 | — |
| SAR American Head | — | — |
| SAR American Body | — | — |
| SAR (EU) head | — | — |
| SAR (EU) body | — | — |
| Messaging | — | — |
Audio
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Microphone Count | — | 2 |
| Audio Features | A2DP, Loudspeaker | A2DP, HFP, HID, HS, LE, MAP, PAN, OPP, PBAP/PAB, HOGP, aptX |
| Alert types | — | — |
Technical
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| EAN / GTIN | — | — |
| UPC | — | — |
| Launch price | — | — |
| MPN | — | — |
| Launch price (USD) | — | — |
Features
| Specification | Lumia 640 XL LTE | Surface Duo |
|---|---|---|
| Built-in functions | — | — |
