Category Breakdown
Microsoft Lumia 640 XL Dual SIM
Unnecto Air 5.5
Performance
54.354.3
Camera
42.442.4
Display
70.570.5
Battery
43.543.5
Build
70.870.8
Overall
54.654.6
Summary
- The Microsoft Lumia 640 XL Dual SIM features a larger 5.7-inch IPS LCD display compared to the Unnecto Air 5.5's 5.5-inch screen, both offering a resolution of 720 x 1280 pixels.
- In terms of performance, the Lumia is powered by a Qualcomm Snapdragon 400 chipset with a 1.2 GHz CPU, while the Unnecto utilizes a 1.3 GHz quad-core processor, though both have 1GB of RAM.
- Both devices sport a 13 MP rear camera, but the Unnecto can record video at 60fps, whereas the Lumia is limited to 30fps.
- The Lumia has a superior battery capacity of 3000 mAh compared to the Unnecto's 2100 mAh.
- In terms of software experience, the Lumia runs on Microsoft Windows Phone 8.1, upgradable to Windows 10, while the Unnecto operates on Android 4.4.2 (KitKat).
- Build quality-wise, the Lumia is slightly heavier at 171g and thicker at 9mm, compared to the lighter and slimmer Unnecto at 156g and 8.5mm.
Side-by-side Specification Comparison
Microsoft Lumia 640 XL Dual SIM
Unnecto Air 5.5
General
Release Date
2015
2015
Announced
2015
2015
Description
N/A
N/A
Display
Size
5.7"
5.5"
Type
IPS LCD
IPS LCD
Resolution
720 x 1280 pixels, 16:9 ratio (~259 ppi density)
720 x 1280 pixels, 16:9 ratio (~267 ppi density)
PPI
720
720
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
HDR Support
✗
✗
Protection
Corning Gorilla Glass 3
N/A
Performance
Chipset
Qualcomm MSM8226 Snapdragon 400 (28 nm)
N/A
CPU
Quad-core 1.2 GHz Cortex-A7
Quad-core 1.3 GHz
GPU
Adreno 305
Mali-450MP4
Memory
8GB 1GB RAM
8GB 1GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
microSDHC
Camera
Main Camera
13 MP
13 MP
Main Camera Details
13 MP, f/2.0, 28mm (wide), 1/3.0", AF
13 MP, AF
Front Camera
5 MP
5 MP
Front Camera Details
5 MP
5 MP
Video Recording
1080p@30fps
1080p@60fps
Selfie Video
1080p@30fps
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
3000 mAh
2100 mAh
Battery Details
Li-Ion 3000 mAh, removable
Li-Ion 2100 mAh battery
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in)
153 x 76 x 8.5 mm (6.02 x 2.99 x 0.33 in)
Weight
171 g
156 g
Materials
N/A
N/A
Water Resistance
N/A
N/A
Colors
Matte cyan, Orange, Black, Matte white, Glossy white
Black, White, Gray
Foldable
✗
✗
Connectivity
SIM
Dual SIM (Micro-SIM, dual stand-by)
Dual SIM (dual stand-by)
Network
GSM / HSPA
GSM / HSPA
Network Speed
HSPA 42.2/5.76 Mbps
HSPA 21.1/5.76 Mbps
5G
✗
✗
4G
✗
✗
WiFi
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Wi-Fi 802.11 a/b/g/n, dual-band, hotspot
Bluetooth
4.0, A2DP
4.0, A2DP
NFC
✓
✗
USB
microUSB 2.0
microUSB 2.0, OTG
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, BDS
GPS
Software
Operating System
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Android 4.4.2 (KitKat)
OS Version
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Android 4.4.2 (KitKat)
Security
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer, proximity, compass, sensor core
Accelerometer
Audio
Stereo Speakers
✗
✓
Loudspeaker
Yes
Yes, with stereo speakers
Audio Jack
Yes
Yes

