1. Back up all personal information such as contacts, photos, documents.
2. Disconnect your phone from any Wi-Fi networks it may be connected to.
3. Update your device's operating system to the latest version.
4. Connect your device to your computer and launch your anti-virus software.
5. Follow any instructions given to you by the software to scan and remove any viruses from your device.
6. Restart your device, and reconnect to your Wi-Fi network.
7. Monitor your device closely for any irregular behavior.