android 5.0

So, I have a 32GB Samsung Galaxy J7 model J700H. I have used only 2GB of space including all my apps and misc files, but, in the storage tab, in Settings, it shows I only have 400mb, of space left when I should have 30GB left. Furthermore, if I try to install an app from Google Play Store, it...

Android 5.0 player app is running after Task Manager to close all. Haven't actually played music in 2 weeks. App keeps starting itself. (Bluetooth not enabled.

Am developing An leave application in that after registration i need pin Activity..that too unique Pin Activity user should update the pin manually and also they should change the pin. this is for security Purpose... How to create this Pin Activity give some idea..

Hi, I have the following software update and I'm not sure what it is. I just did a factory reset on my phone (s5) n it's still trying to update again after connecting to a different WiFi. I checked the versions of android but can't find anything about this. Has anyone else had this? What is it...

I bought a Sony xperia z3 compact yesterday .yesterday it worked ,but today its freezes at Android is optimizing apps 15 out of 175 after 18 hours it showing optimizing apps 25 out of 175 . what is the cause of this problem and solution please