Sony announced the Sony Xperia M4 AQUA smartphone on March 2015 and released it on June the same year that comes up with  android OS v5.0 (Lollipop) and is planned to upgrade to v6.0 (Marshmallow). This phone supports GSM/ HPSA/ LTE network configurations. This phone has a dimension of 145.5 x 72.6 x 7.3 mm (5.73 x 2.86 x 0.29 in) having thickness 7.3mm and weighs about 136 grams. It uses Nano-SIM technology. This phone is IP68 certified dust and water proof phone up to 1.5 meter and 30 minutes time. The display is of 16M colors and has IPS LCD capacities touchscreen. The screen size is 5.0 inches with luminous display and the screen-to-body ratio is 65.2%. The screen resolution is 720 x 1280 pixels which is exactly 294 ppi pixel density. It supports multi touch upto 4 fingers and comes up with Scratch-resistant glass.
It has got Qualcomm MSM8939 Snapdragon 615 chip-set and CPU comprises of Quad-core 1.5 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53 processors. The GPU used is Adreno 405. The internal memory available is 8 GB/16 GB (E2306) and it contains 2GB RAM. It supports a micro SD card that could be expanded up to 128 GB (dedicated slot). The primary camera comprises of a 13 MP, f/2.0, auto focus, LED flash camera while the secondary is 5 MP, 720p camera. The camera has got the features like Geo-tagging, touch focus, face/smile detection, HDR and panorama mode. The video quality is 1080p @30fps, 720p @120fps and HDR. The microphone jack is 3.55 mm that comes with Hi-Res Audio. The WLAN supported are Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA and hotpots. The Bluetooth version is 4.1, A2DP. The GPS technology used is A-GPS, GLONASS. It also contains FM radio with RDS. It supports NFC connection. The browser is HTML 5. The USB available is micro USB v2.0. It also comes with accelerometer, gyro,  proximity and compass sensors. The browser used is HTML 5. The battery used is Non-removable Li-Po 2400 mAh battery having Stand-by up to 681h (2G) /up to 685h (3G), Talk time upto 12h40 min(2G)/ Up to 13h20min (3G) and music play up to 64h40 min. The colors available is Black, White, Coral and Silver. The main disadvantages of this phone is 8 GB built-in storage is insufficient, better opt for the 16 GB model and a Non-removable battery.