Are you a Sony Xperia Z, ZL, or ZR owner? If so, don’t upgrade to Android 4.4.2 KitKat; the reason? Battery problems await you.

A number of Xperia Z users have taken to Sony Mobile’s talk forum to express their disappointment over the new Android 4.4 KitKat update. According to one user, “it [battery life] went from being fully charged to 60% in 3 hours, with no usage whatsoever and in network mode only (no 3g or Wi-Fi).” Another user had the same problem, but a suggested workaround by a Sony owner pertains to installing an app called “Battery Life Repair” from the Google Play Store.

Sony responded to the battery drain by saying that the problem is the Android 4.4.2 KitKat update itself: “We have investigated the issue with Google Play Services using a lot of battery, and we have identified that the root cause of this is related to the latest version of Google Play Services (4.4.52). Until a new version of Google Play Services is provided by Google we urge users to either uninstall the latest update of Google Play Services (might limit use of Google services like YouTube)…”

As another option, Sony recommends disabling interest-based ads and disabling data backup so that your update doesn’t occur automatically the next time. It seems that Sony may not be so hopeful that an incremental update in Android 4.5 will fix the problem, either.

Problems in Android 4.4.2 KitKat abound, with many Nexus 5 users having a mm-qcamera-daemon bug that drains battery life. Nexus 5 users also faced issues with video quality and media storage, so Google’s intention to fix the camera bug with the Android 4.4.2 KitKat update removed one problem, only to replace it with other problems. Galaxy S5 users have been battling a fatal camera flaw in Android 4.4.2 KitKat, and, for those whose GS5s survive the flaw, they must face a camera bug that activates with prolonged camera use. As for the long-awaited Android 4.4.3 KitKat update, it came this week – without a fix for the Nexus 5 camera bug.

Android 4.4.2 KitKat, in short, has been loaded with problems. In fact, Android 4.4.3 KitKat has been designed to tackle problems with missed notifications, dropped calls, as well as Bluetooth and Wi-Fi problems. If you haven’t taken notice until now, please – don’t update to Android 4.4.2 KitKat until 4.4.3 KitKat is pushed out to your Sony device. It seems that, at this point, problems are a hit-and-miss with some phones: some phones dodge the issues while others get them. There is no “hide-and-go-seek game here,” so there’s no way to know whether or not you’ll be an unfortunate user who gets an update that drains your Sony Xperia Z battery. This may not help those of you who have already updated your device, but please pass this on to users who haven’t yet updated.