What is the first step in buying a new mobile phone? How to see if the new machine has been tampered with? (with virus)

Generally, as long as it is a brand-new mobile phone, the original factory will not add viruses. After buying a mobile phone, if the merchant offers to help you install software and download music videos, it is suggested to refuse, and it is said that if the system is not original, it will be returned, so that the merchant has no chance to add malicious software and promote software, and basically there is no passive opportunity.

In addition, after purchasing the boot, see if there are any wizards, etc. And after setting it up, try to scan the system with software such as Cheetah Security Master, 360 Guardian or mobile phone housekeeper. Generally, domestic brand mobile phones also have their own security software, which can be scanned after updating the virus database.