difference between Sony Xperia M and Z
Sony Xperia M and Z in india- Showrooms

Sony Xperia M Features

Quad-band GSM/GPRS/EDGE and dual or quad-band HSPA support
Also available in a dual-SIM variant, called Xperia M dual
21 Mbps HSDPA and 5.76 Mbps HSUPA
4" 16M-color TFT capacitive touchscreen of FWVGA resolution (480 x 854 pixels) at 245ppi
Android OS v4.1.2 Jelly Bean
Dual-core 1 GHz Krait CPU, Adreno 305 GPU, Qualcomm MSM8227 Snapdragon chipset
1 GB of RAM
4 GB of built-in storage (2 GB user available)
microSD slot (cards up to 32GB supported)
5 MP autofocus camera, single LED flashlight, geo-tagging, touch focus, HDR, hardware shutter key; VGA front-facing camera
720p @ 30fps video capture
Wi-Fi a/b/g/n, Wi-Fi hotspot
Bluetooth 4.0 with A2DP
NFC support
ANT+ support for connecting low-power wireless sports accessories
GPS with A-GPS; GLONASS
PlayStation certified
Accelerometer, ambient light and proximity sensor
Standard 3.5 mm audio jack; Walkman music player with many audio enhancements
Stereo FM radio with RDS
microUSB port (charging)
Built-in LED strip provides a breathing light and notification light
1,750mAh Li-Ion battery, user-replaceable

Sony Xperia Z Features

General: Quad-band GSM/GPRS/EDGE, penta-band UMTS/HSPA, 100 Mbps LTE
Form factor: Water-resistant cameraphone
Dimensions: 144 x 74 x 8.5 mm, 170g
Display: 5" 16M-color 1080p (441ppi) TFT capacitive touchscreen, Triluminous display with X-Reality and OptiContrast
Chipset: Qualcomm MSM8974 Snapdragon 800, quad-core 2.2 GHz Krait 400, Adreno 330, 2GB of RAM
OS: Android 4.2 Jelly Bean
Camera: 20.7MP camera with 1/2.3" Exmor RS sensor and Sony G Lens, F/2.0 aperture; 2MP front-facing camera
Video camera: 1080p video capture with HDR mode
Memory: 16GB of inbuilt storage, microSD card slot, up to 64GB
Connectivity: Wi-Fi a/b/g/n, Wi-Fi hotspot, Bluetooth 4.0, standard microUSB port with MHL and USB host, GPS receiver with A-GPS, 3.5mm audio jack, NFC
Battery: Sealed 3,000mAh battery
Misc: IP58 certified - dust-protected and water resistant; shatter proof and scratch-resistant glass for the front and the back panel, metal frame on the sides