The background LCD can be a bit too bright even in low brightness conditions and this could prove to be a nuisance for people using it as a bedside clock with the Daydream functionality. The battery life is quite significant with its 2400mAh of power and the bright screen.
The small amount of internal storage could be a problem to users who prefer loading a lot of applications and games on their device. In the camera aspect, the M4 performs admirably, both outdoors and indoors and with landscapes and close-ups. The dedicated shutter button is a great addition, especially when you are framing a shot.
However, in the end the M4 cannot take a photo quickly and that seems to be an issue with the camera. That being said, the still shots are incredibly beautiful in its 13-megapixel camera. The speaker in the M4 is decent but don’t expect to hear it clearly in a noisy environment.
However, plug a pair of earphones in and the M4 is quite a decent performer. The Snapdragon 615 processor ensures that you can perform day-to-day tasks on your device quite admirably. Apps and games load fast but sometimes, switching between multiple apps result in a slight lag which could have been overcome with some extra RAM.
In other news, Xperia M4 is currently running on Lollipop 5.0 but reports indicate that Sony will be releasing Android 5.1.1 Lollipop for the M4 quite soon.
It will bring Camera focus, speed and accuracy improvements in Superior Auto mode. You can use the Sony SmartWatch 3 to take pictures from the camera. Silent mode control and overall volume will be improved with this update.
Stay tuned for more updates on Sony Xperia M4!