The phone can not download the application.
The phone can not install apps.
The phone has an incompatibility issue between the phone and the application.
Unable to locate in the app
How to close the apps running in the background.
The application is gone after Erase all data(factory reset)
How to uninstall an application.
How to limit apps that automatically start after boot
The game loading slow when running, and force closes.
How to keep the apps running in the background.
How to keep apps running in the background.
How to cancel apps that have been running in the background
Application terminates unexpectedly
Browser /Fcebook /WhatsApp can not load pictures.
Newly installed apps can't be shown.
Phone enters other applications when I touch the Back key.
How to limit software traffic? (cellular network)
Social software voice function and video call function are not available.
How to save pictures from various applications to mobile phones?
How to judge whether an application is a three-party application or a pre-installed application?
Cannot add new contacts to a phone book or view a phone book.
Copy contacts to another phone.
Contacts saved on SIM card can not show on the phone, they even disappear.
When saving contacts, contact can not be saved.
When calling, both sides can not hear each other.
There is no ringtone when calls come:
Some numbers can still call in after they have been set as blacklist.
When clicking on certain contacts to check the number, the phone always displays loading first and shows the number after a while.
When switched on, the phone shows emergency call.
Setup the contact to blacklist.
It's very slow loading contacts from SIM card, or can not load contacts from SIM card.
