Poor performance: If your phone shows sluggish performance like crashing of apps, freezing of the screen and unexpected restarts, it is a sign of a hacked device. No calls or messages: If you stop receiving calls or messages, the hacker must have got your SIM card cloned from the service provider.
What does it look like when your phone is hacked?
Strange or inappropriate pop ups: Bright, flashing ads or X-rated content popping up on your phone may indicate malware. Texts or calls not made by you: If you notice text or calls from your phone that you didn't make, your phone may be hacked.