Reasons off the phone
Reasons why phone fails, quite a lot. One of them is a manufacturing defect. When you buy the phone, pay attention to its performance. If the keys or screen touch phone it slows down, it should abandon such a purchase. Maybe after some time it will start off.
Another common reason for the off is a bad connection of the contacts between phone and battery. In this case the phone needs a new battery or contact the service center.
The phone may be switched off due to software failure. It happens quite rarely. In this case, will only service center. Experts will replace the existing software on your phone.
Careless handling may cause its sudden shutdown. For example, the unit often fell over or was in a too humid environment. Many people like to lie in the tub, talking or playing in various applications. PCB cell phone is gradually oxidized and closes. It is a constant of spontaneous deactivation. Check the printed circuit on the fault may own. Squeeze the phone in your hand, if it starts to hang or shuts down, the matter is in it.
Got the battery. Well, here everything is clear, the phone just needs to be charged. Sometimes there are cases when "dying" battery. To save her you should connect the phone to the network for 24 hours. Then the phone should work.
Down came the transmitter. Maybe the phone was damaged by a power amplifier. This fault leads to a large consumption of energy, and it just shuts down, unable to withstand the overload.
Check the power button phone for serviceability. Maybe the button is just a fuse and the unit shuts down. It can be replaced at the service center.
There are cases when phone turns off while talking, and if talking on the headset, the phone works fine. This may indicate that a damaged earpiece Flex.
Off the phone because of a problem with the MiniUSB connector. This cell charges the battery only when switched off and after charging for a long time can not be included.
When you replace the battery in the phone to your new one, problems with the cell phone.
How to fix the situation
For that, you should contact the contact centre. Experts will help to understand the cause of failure and eliminate it. If the phone is under warranty, the repair will make you free. But if damage occurred due to your fault, be prepared to pay for services provided to you.