Welcome to the community.
You can use this site to check for updates to your device: http://support.sonymobile.com/global-en/xperiaz/software/
Unfortunately we are unable to confirm specific date for any particular firmware release due to the nature of the approval process. If there is a particular update you are wanting to update to, it may not be available for your exact handset.
For further information regarding the approval process please see here.
... View more
@gr8gizmoguru wrote: Pretty sad that Sony cannot handle a simple update. Even though am a Sony fan and have Xperia ZL , i dont think i want to update 4.4.4 soon reading all these sad reviews. i feel more depressed knowing i had myself updated my wife's Moto G to 4.4.4 over the air and its working flawlessly as before. Guess Sony needs to drop its UI customisations and add-ons for a smoother update experience. About the „perfect” Moto G. I have both phones (ZL and Moto G 2013). After Lollipop update for Moto G, everithing is worse (performance issues, multitasking). KK was better for G. In terms of multitasking, Moto G is worse than ZL => background apps restars and reloading. Chrome makes the Moto G to FC other background apps like Google Music or TuneIn. At this date I don't recomend 1 GB of RAM android device for daily multitasking at all! Take this advice and keep in mind that I'm not a gamer at all (played just Limbo and some easy games on both phones). My ZL had some performance issues after the updates to 4.4.4 but I made a repair (reinstalling the original ROM) and everithing is smooth (most of times). The battery seems to be the same. I observed also that sometimes the phone starts to be slow (I don't know what triggers) but the solution is a simple restart. When this occurs, the simptoms are simple, slow keyboard reaction is one of them. There must be an app or something like this that slows down the system. Not sure (I made already a repair).
... View more