Sony Xperia Z is one of the best smartphones made by Sony with waterproof & dust-proof certification and heavy on-board hardware. But there are many hidden things you should know to improve its performance and significantly increase the battery life.

1. Turn off GPS Function
GPS satellite is very effective for mapping, navigation and search applications but it fairly consume battery as well. Turn it off when not in use by going to the "Settings > Location services > Click on the checkbox of GPS satellites."

2. Stamina Mode
Never forget that your Sony Xperia Z has a built-in power saving feature called STAMINA mode. It allows you to significantly extend battery life by disabling mobile data connection and apps synching such as email or social media. Go to "Settings > Power management > STAMINA mode."

3. Small Apps by Sony Communications
If you want multi-tasking ability on your Sony Xperia Z, you can download the All Small Apps from Google Play Store and enable certain functions such as camera, email, music player, Facebook and Twitter to become widget-like apps on your screen. It will allow you to do multi-tasking without leaving the current screen.

4. Disable Animations
Transitional animations provide fluid-like transition between applications whenever you press home or the back key. However, animations can affect both performance and battery life. To make your phone act snappy, go to "Settings > Developer options > Then select Window animation scale, Transition animation scale and Animator duration scale > Turn them off."

5. Disable Bloat-ware Applications
Some applications on your Sony Xperia Z are not useful on everyday life and these apps can slow down, drain battery and hassles your device. Go to "Settings > Apps > All > select the app you want to disable."

Other Extra Tips

1. Turn off Wi-Fi, Bluetooth and Mobile Data if not needed to extend battery life.

2. Use static wallpaper instead of live wallpapers to improve system performance and battery.

3. Utilise the "back" key when leaving applications to close them. You can also manually log out to certain apps such as Facebook to reduce RAM and battery consumption.

4. Disable Auto-sync if you do not require push notifications from your accounts. Go to "Settings > select the account you want to disable automatic syncing."

5. Reboot your device regularly. It is highly recommended to give your phone total refreshing by rebooting it daily.