OPPO R7 No Signal no service problem solution

There is a signal condition one:

The signal itself is a problem we can try to get out of the ground where there may be no signal and make a call in a wide area.

No signal condition the propagation of two electromagnetic waves:

Solution: Find the surrounding signal jamming device, close or remove it.

No signal condition three networks particularly busy:

Solution: Avoid the bustling business district, the peak time, signal conditions will automatically improve, this situation is very rare to see before.

No signal condition four:

Not external factors caused by the cell phone no signal, it is likely that the battery voltage instability caused by the signal received circuit power supply, voltage fluctuation state, the reception of the signal can not be stabilized. So the phone can not access the Internet, and even the phone can not dial.

Solution: A higher quality of the phone, signal problems will be repaired.

No signal condition Five baseband serial number missing:

Solution: re-brush the corresponding model ROM, you can also enter the Model radio.

All right, so we've solved this problem. In fact, from the above reasons to see most of the reasons for the outside, the reason for the mobile phone is less, of course, if the warranty can try to send to test, maybe really mobile phone problem.