查杀病毒的免费版本是最流行的。
The free version of Avira Antivirus is among the most popular.
首先，当然是手机一定要安装安全软件了，还要养成定期查杀病毒木马的习惯，确保终端处于相对安全的状态。
First of all, of course, is the mobile phone security software must be installed, but also develop a regular habit of killing the virus Trojan, ensure the relatively safe state of terminal.
提供频繁的查杀病毒定义更新，以保持其使用者的安全，由新的恶意软件的爆发。
Avira offers frequent virus definitions updates in order to keep its users safe from new malware outbreaks.
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