A Trojan virus is a type of malware that disguises itself as a legitimate program or app, but once inside your device, it can perform destructive actions without your knowledge. Trojans can infect both computers and mobile devices, including phones. They can steal personal information, send premium-rate SMS, and even block, delete, and copy data without access to the internet. Some common types of Trojan viruses include backdoor Trojans, DDoS Trojans, and downloader Trojans.

It can be difficult to detect a Trojan virus on your phone, as they are designed to go undetected. However, there are some subtle hints that may indicate a Trojan infection, such as impaired device performance, increased browser and pop-up ads promoting antivirus products or scans, an altered desktop appearance, and more spam emails than usual. If you suspect your device may have been breached by a Trojan, you should look for many of the same telltale signs of malicious software, such as poor device performance and strange device behavior.

To protect against Trojan viruses, it is important to only download apps from official app stores and to keep your devices operating system up to date. If you suspect your phone has a virus, you can remove some Trojans by disabling startup items on your device which don’t come from trusted sources. For the best results, first reboot your device into safe mode so that the virus can’t stop you from removing it. Antivirus software is also a fail-safe way to protect your device from viruses.