Here are 10 of the most common signs that someone is spying on your phone: Unfamiliar Applications. ... Your Device is 'Rooted' or 'Jailbroken' ... The Battery Is Draining Fast. ... Your Phone Is Getting Very Hot. ... Unusually High Data Usage. ... Strange Activity In Standby Mode. ... Issues With Shutting Down the Phone. ... Odd SMS Messages. More items... Jul 25, 2023