A: Yes, you can use a photo from your gallery as your lock screen background on the Sony Xperia Z. Follow these steps: 1. Go to the “Settings” menu on your phone. 2. Scroll down and tap on “Display & Brightness. 3. From the options available, tap on “Wallpaper.”. 4. Select “Lock screen wallpaper.”. Find information and receive instant notifications about your product. Register. Repair & Warranty. Find instruction manuals and brochures for Xperia XZ3. Unplug your Sony Xperia Z3 from any electronic device. Remove the battery from your Sony Xperia Z3. Perform a conditionally factory restart. Battery does not work on your Sony Xperia Z3. Battery completely discharged. Battery too old to change. If all the previous solutions don't work. Make use of your guarantee. Step 4. Remove rear camera bracket. Release connector, but take care not to damage the electronic components next to the connector. It is best to access the connector from the bottom (battery side), and not from the side as the picture shows. Remove rear camera. Took a very thin "-" screw driver or guitar pick and opened back cover. Found battery connection and removed connection (not the battery) and waited 10 secs. Replugged battery and connected charger. Phone turned on :) :) :) :) :) pls watch "how to replace sony xperia z ultra battery" video on youtube. It is really easy than expected. Thanx In this video I'll show you how to disassemble Sony Xperia XZ3, include Back Cover, Battery, dual Rear Camera and P-OLED Screen.Get OEM Replacement Parts for A video run through of how to replace the battery in your Xperia Phone. This video shows this process using an Xperia Z1, however, the principle is the same Battery life. The Sony Xperia Z3 Tablet Compact has a 4,500mAh battery - not bad considering how thin it is, but the 6.6mm thick Galaxy Tab S 8.4 has a 4,900mAh battery and there have been 6 Step 5 Removing the battery. Remove all screws connecting the battery to the tablet. Location of screws shown with red circles. Then lift the left side first then detach the connection in the lower right corner. Connection shown with orange box. Completely remove the battery. Add a comment. Sony Xperia Z3v Android smartphone. Announced Oct 2014. Features 5.2″ display, Snapdragon 801 chipset, 20.7 MP primary camera, 2.2 MP front camera, 3200 mAh battery, 32 GB storage, 3 GB RAM xRSy9u.