Phone Comparison - Panasonic P51 vs Sony Xperia M Dual vs Panasonic P81

general General Info

Manufacturer Panasonic Sony Panasonic
Announced May 2013 June 2013 June 2014
Status Available - May 2013 Available - September 2013 Available - June 2014
Colors Black, White Black, White, Purple, Yellow Black
Form Factor Candybar Candybar Candybar
Dimension 144 x 75 x 8.5 mm
(5.67 x 2.95 x 0.33 in)
124 x 62 x 9.3 mm
(4.88 x 2.44 x 0.37 in)
7.9 mm thickness
(0.31 in thickness)
Weight 135 g (4.76 oz) 115 g (4.06 oz) -
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Both Versions) GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 900 / 2100 HSDPA 900 / 2100 - C2005
HSDPA 850 / 1700 / 1900 / 2100 - C2004
HSDPA 900 / 2100
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Android OS, v4.2 (Jelly Bean) Android OS, v4.1 (Jelly Bean) Android OS, v4.2.2 (Jelly Bean)
Processor Quad-core 1.2 GHz Cortex-A7, MTK MT6589 Dual-core 1 GHz Krait, Qualcomm MSM8227 Octa-core 1.7 GHz Cortex-A7, Mediatek MT6592
GPU PowerVR SGX544 Adreno 305 Mali-450MP4
RAM 1 GB 1 GB 1 GB
Internal Memory 4 GB storage 4 GB 8 GB
External Memory microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 GB

display Display

Type IPS LCD capacitive touchscreen TFT capacitive touchscreen IPS LCD capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.0 inches 4.0 inches 5.5 inches
Resolution 720 x 1280 pixels (294 ppi) 480 x 854 pixels (245 ppi) 720 x 1280 pixels (267 ppi)
Screen-to-Body Ratio 63.69% 57.31% -
Multi-Touch yes yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 8 MP, 3264 x 2448 pixels 5 MP, 2592х1944 pixels 13 MP, 4160 x 3120 pixels
Flash LED flash LED flash LED flash
Features Auto focus, Geo-tagging, Touch Focus, Face Detection Auto focus, Geo-tagging, Touch Focus, Image Stabilization, HDR, Panorama Auto focus, Geo-tagging
Video Yes, 1080p Yes, 720p@30fps Yes, 1080p@30fps
Front Camera Yes, 1.3 MP, 720p [Similar] Yes, VGA [Similar] Yes, 2 MP [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Up to 86 kbps Yes
Edge Yes Up to 237 kbps Yes
3G HSDPA, 21 Mbps; HSUPA, 11 Mbps HSDPA, 21 Mbps; HSUPA, 5.76 Mbps HSDPA, 21 Mbps; HSUPA, 5.76 Mbps
Bluetooth Yes, v4.0 with A2DP, EDR Yes, v4.0 with A2DP, ANT+ Yes, v3.0 with A2DP
Wi-Fi Wi-Fi 802.11 b/g/n, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot
USB Yes, microUSB v2.0, USB On-the-go Yes, microUSB v2.0 Yes, microUSB v2.0
GPS Yes, with A-GPS support Yes, with A-GPS support Yes, with A-GPS support
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 4 GB storage, 1 GB RAM 4 GB, 1 GB RAM 8 GB, 1 GB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 GB
USB OTG Supported - -

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 not supported NFC supported NFC not supported

battery Battery

Type Li-Ion Battery Li-Ion Battery Non-removable Li-Ion Battery
Capacity 2500 mAh 1750 mAh 2500 mAh
Stand by - Up to 498 h (2G)
Up to 454 h (3G)
-
Talk Time - Up to 10 h 16 min (2G)
Up to 9 h (3G)
-