6. Weird Text & Characters
Closely examine the text messages sent. Do you remember writing them? Sometimes, a hacker may use your mobile to send out strange SMS message to friends, family members, or anyone in your contacts list. Usually, this is unnoticed until someone complains about it to you. The same may occur with your email account.
If you think your phone is compromised, notify your contacts. Run an anti-virus and anti-malware program. Avoid clicking on suspicious SMS links or emails.