You can not set or registered mail
If you can not set or registered e-mail: 1> Make sure the network connection is normal, you can connect to the Internet; 2> Make sure the e-mail settings are correct; 3> Make sure that your system time and local time is the same.

Abnormal operating system
Operating system exception: When you install third-party applications, which may lead to a conflict, the system can not function properly. Then you can reboot the system or uninstall the application.

Unable to install applications
If you can not install the application, try the following steps: 1> Check the settings menu setup options allow installation of third-party software; 2> Make sure the application is normal.

No gravity sensing
If there is no gravity sensor, try the following steps: 1> Please check the settings are turned off this feature; 2> Check the G-sensor IC welding firm.


You can not connect HDMI
If you can not connect HDMI, try the following steps: 1> Make sure the device is properly connected to the computer; 2> Make sure that the HDMI cable is in good condition; 3> Check the HDMI seat no damage; 4> Check whether HDMI seat welding firm.


You can not take pictures or videos
Can not take pictures or videos, please try the following steps: 1> Check the camera cable is loose, if fully connected to the motherboard, the transposon whether welding firm; 2> Check the camera cable is damaged.

No sound from headphones connected
If the headphones are connected there is no sound, try the following steps: 1> Please check if the volume is set to 0; 2> Check the headphone connection is normal, headphone cable is damaged. If the audio file has been damaged, can cause noise or silence; 3> Check whether the headphone connector holes welding firm.


No sound from speakers
If the horn does not sound, try the following steps: 1> Please check if the volume is set to 0; 2> check the speaker port is in good condition welding state.


You can not read TF card
If you can not read TF card, try the following steps: 1> Make sure that the maximum storage capacity of the machine supports TF card capacity; 2> Make sure the TF card in good condition; 3> Check the TF without any harm; 4> Check TF card slot welding in good condition.


No touch functionality
If you do not touch function, try the following steps: 1> reboot; 2> Check the touch screen cable is loose and fully connected to the motherboard, there is no contact with dirt and nest destruction; 3> Replacing a touch screen to check whether there are good the same problem.


You can not connect to the computer
If you can not connect to the computer, try the following steps: 1> Make sure the device is properly connected to the computer; 2> Make sure that you have enough memory space; 3> Make sure the USB cable is in good condition; 4> Check the USB port without damage; 5 > check the USB port welding condition; 6> can not be switched because the TP problem or ...

Unable to start
If you can not turn on, try the following steps: 1> Insert rechargeable power supply, check whether you can charge; 2> Open the case to find out whether there are parts fall off on the motherboard; 3> Check the battery joints in good condition; the voltage across 4> battery measured with a multimeter to check whether there is support voltage 3.6 V; 5> check the power button is loose or welding ...