. Phone as it is quickly discharged  This point follows from the previous one: if the battery is discharged too quickly, especially if you have not used the phone more than usual, so inside it "runs" a potentially dangerous application. Fear is visible, a sharp decline in the frequency of use between charges. Remember that over time the battery wears out your phone and its share is reduced. But this is going on smoothly. The sharp decline may also be caused not only spyware but also enabled the phone itself.  Three. Delay when you turn off your phone  Pay attention to the delay when you turn off the phone. If this process takes a suspiciously long time, accompanied by flashing lights or the phone does not turn off, then something is going on with the phone, though it may be a common technical problems.  the noise can be purely technical Mobile phone spy.  The second case - a transmitting antenna pickup the phone to other devices, primarily on the speaker or speakers. If by phone no one speaks Mobile spyware, and the speakers can be heard the sound, it means the phone is turned on and transmits a signal. This could mean that spyware came to us and lays you.