Is My Phone Number Enough to Hack My Cell Phone? There are a few ways to tell if someone is trying to harm you by using your cell phone number. You might want to check your phone bill if your phone starts acting strangely or unusually. You might also want to look for numbers with premium rates. Malware will compel your telephone to contact premium-rate numbers and take the returns. You should check your phone bill for suspicious charges if you think a criminal has access to your cell phone. Unusual conduct on the phone: If you think your phone has been hacked, look for evidence of compromised devices. Unrecognized applications, erratic ad pop-ups, and high data usage are all possible. Additionally, your phone might not shut down properly or run very slowly. Your phone may also be infected with malware if you observe these signs. Follow the steps below to see if you are at risk of being a victim. For indications of a compromised device, check your wireless