Sometimes the intention of the intruder is to get regular money or income, and as such he might inject some code into your site through which you might see pop-ups at regular intervals. This malware or spyware uses your phone resources for spying and sending data to criminal servers.
If you see an inevitable decrease in battery lifespan, it can be said that your device is hit by malware/spyware. It may happen if your device is old, as the battery on mobiles can last from 6 months to three years normally. Please check whether this quick decrease in the battery isn't because of the battery itself. But you need to make sure of one another thing before confirming that the device is compromised. Without any argument, if you see a noticeable decrease in your phone battery life, your phone might be hacked. As a cell phone owner, you should be able to identify the following things on your phone - 1.
