Sudden independent Dialing a number or making an outgoing call on an Android smartphone is most often caused by “pocket dialing” due to the lack of a screen lock, the touch button sticking due to dirt or moisture, or a critical failure of a third-party application. Such a system error not only creates the risk of accidentally calling emergency services or toll-free numbers, but also indicates the need for urgent diagnostics of the device to prevent leakage of personal data and financial losses.
The reasons why Android smartphone behaves in this way can vary from banal physical dirt on the display to complex hardware damage to the power controller. In some cases, the culprit is poor-quality protective glass that creates electrical interference, and in others, it is malware that secretly controls communication functions. To regain control over the device, it is necessary to sequentially eliminate each of the potential factors.
In this guide, we will examine in detail the mechanics of the occurrence of “phantom clicks” (the so-called ghost touch) and algorithms for eliminating them. You will learn how to diagnose the problem using software methods, when parts need to be replaced, and how to protect yourself from the situation repeating itself. Do not ignore these symptoms, as over time they can progress to complete inoperability of the touch layer.
Physical causes and the influence of external factors on the sensor
The most common reason for spontaneous calls lies in the malfunction of the capacitive screen. Modern displays respond to changes in the electrostatic field created by a human finger. However foreign objects or environmental conditions may mimic this effect. If there are drops of water, grease or dust on the screen, they can complete a circuit and be registered as a touch by the system. This happens especially often during rain or when there is high humidity in the room.
Another critical factor is the quality of the protective film or glass. Cheap accessories often do not have an oleophobic coating and can become deformed over time, creating air gaps between the glass and the matrix. Static electricity accumulates in these voids, which