Phone Comparison - Nokia Lumia 730 Dual SIM vs Nokia Lumia 638 vs Xiaomi Mi 4i

general General Info

Manufacturer Nokia Nokia Xiaomi
Announced September 2014 December 2014 April 2015
Status Available - September 2014 Available - December 2014 Available - April 2015
Price - Rs. 7,999 ($117.63) [Similarly Priced] Rs. 8,999 ($132.34) [Similarly Priced]
Colors Orange, green, white, black Black Black, White, Blue, Yellow, Pink
Form Factor Candybar Candybar Candybar
Dimension 134.7 x 68.5 x 8.9 mm
(5.3 x 2.7 x 0.35 in)
129.5 x 66.7 x 9.2 mm
(5.1 x 2.63 x 0.36 in)
138.1 x 69.6 x 7.8 mm
(5.44 x 2.74 x 0.31 in)
Weight 134 g (4.73 oz) 136 g (4.8 oz) 130 g (4.59 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G Network - LTE 1800 / 1900 / 2100 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) LTE
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, EMail, IM
Build Features ClearBlack display - -

hardware Hardware and OS

OS Microsoft Windows Phone 8.1 Microsoft Windows Phone 8.1 Android OS, v5.0 (Lollipop)
Processor Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400 Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615
GPU Adreno 305 Adreno 305 Adreno 405
RAM 1 GB 1 GB 2 GB
Internal Memory 8 GB 8 GB 16/32 GB
External Memory microSD, up to 128 GB microSD, up to 128 GB No

display Display

Type AMOLED Capacitive Touchscreen, Corning Gorilla Glass 3 IPS LCD capacitive touchscreen, Corning Gorilla Glass 3, ClearBlack Display IPS LCD capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 4.7 inches 4.5 inches 5.0 inches
Resolution 720 x 1280 pixels (312 ppi) 480 x 854 pixels (218 ppi) 1080 x 1920 pixels (441 ppi)
Screen-to-Body Ratio 66.20% 64.43% 71.57%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio FM radio FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 6.7 MP, Carl Zeiss optics 5 MP, 2592 х 1944 pixels 13 MP, 4128 x 3096 pixels
Flash LED flash No LED flash
Features Auto focus, 1/3.4'' Sensor Size, Geo-tagging, Face Detection, Panorama Auto focus, 1/4 Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR
Video 1080p@30fps, stereo sound rec. Yes 1080p@30fps
Front Camera 5 MP, 720p [Similar] No [Similar] 5 MP [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Up to 296 kbps Yes Yes
3G HSDPA, 21.1 Mbps; HSUPA, 5.76 Mbps HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps HSPA, LTE
Bluetooth v4.0, A2DP v4.0, A2DP, LE/ apt-X after WP8 Denim update v4.0, A2DP
Wi-Fi Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, DLNA, hotspot Wi-Fi 802.11 a/b/g/n, dual-band, hotspot
USB microUSB v2.0 microUSB v2.0 microUSB v2.0
GPS Yes, with A-GPS, GLONASS, Beidou Yes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 8 GB, 1 GB RAM 8 GB, 1 GB RAM 16/32 GB, 2 GB RAM
Expandable Storage microSD, up to 128 GB microSD, up to 128 GB No

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC supported NFC not supported NFC not supported

battery Battery

Type Li-Ion Battery (BV-T5A) Li-Ion Battery (BL-5H) Li-Po Battery
Capacity 2200 mAh 1830 mAh 3120 mAh
Stand by Up to 600 h - -
Talk Time Up to 22 h (2G)
Up to 17 h (3G)
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