A new landscape study states that an upcoming mobile devices may come with per-installed mobile malware along with malicious code in it. Per-installed malware means that the mobile device already installed with malicious software in system level that cannot be removed easily. The best method to deal with these infections is to stay away from devices with infections. If you already bought one, return the device. Contact the manufacturer. If you cant return it, contact the manufacturer and return it. The best way to avoid these infections:”]
Source: https://gbhackers.com/pre-installed-mobile-malware-before-shipping/