How to Edit Music Tag on Xperia Z3
Most of the music players on Android don't come with a default music tag ID editor. But on the Xperia devices, you can edit music tag using the Music ...
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Sometime you need to close some application to free some memory. Android gives you some ways to close such apps
Setting > Applications > Manage Application
Select each application and tap on Stop
One of the advantages of these apps is the ability to close some applications at the same time