Microsoft Lumia 640 Dual SIM vs Xiaomi Redmi A7
Product
Price
129 USD
129 USD
Status
Available
Available
Brand
Microsoft Mobiles
Xiaomi Mobiles
Model No
Lumia 640 Dual SIM
Xiaomi Redmi A7
Dimensions
141.3 x 72.2 x 8.8 mm
171.8 x 79.8 x 8.3 mm (6.76 x 3.14 x 0.33 in)
Weight
145 g
193 g (6.81 oz)
Build
Dust and splash resistant
SIM
Nano-SIM + Nano-SIM
Colors
Black, Sky Blue
Size
Technology IPS LCD capacitive touchscreen, 16M colors, Multitouch Size 5.0 inches (~67.6% screen to body ratio) Resolution 720 x 1280 pixels (~294 ppi pixel density) Protection Corning Gorilla Glass 3 Extra Features ClearBlack display
6.88 inches, 112.4 cm2 (~82.0% screen-to-body ratio)
Type
IPS LCD, 120Hz, 600 nits (peak)
Resolution
720 x 1640 pixels (~260 ppi density)
CPU
1.2 GHz Quad-Core Cortex-A7
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
OS
Android 15, up to 2 major Android upgrades
Chipset
Unisoc T7250 (12 nm)
GPU
Mali-G57 MP1
RAM
3
3GB
Storage
8GB built-in, 1GB RAM
64GB
Features
166
HDR
Lens 1
8 MP, f/2.0, (wide)
Video
1080p@30fps
Capacity
Standby
5200 mAh
Charging
15W wired
7.5W reverse wired
3.5mm jack
3.5mm audio jack, Speakerphone
Yes
Loudspeaker
Yes
WLAN
HSDPA 850 / 900 / 1900 / 2100
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
5.2, A2DP, LE
GPS
GPS, GALILEO, GLONASS
Radio
FM radio
USB
USB Type-C 2.0, OTG
Launch Date
2026, April 21
Technology
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 2100
4G bands
1, 3, 5, 8, 28, 40, 41
Speed
HSPA, LTE
Lens 1
13 MP, f/2.2, (wide)
Features
LED flash, HDR
Video
1080p@30fps
Sensors
Fingerprint (side-mounted), accelerometer, compass
Virtual proximity sensing