SMS locks QQ.

when your account is abnormal or you don't use QQ for a period of time, you can lock the QQ number by sending a short message through your mobile phone. Lock-up period: All your QQ business has entered the protection scope, and no one else can log in (including QQ, webQQ, Qzone, QQmail, QQ Security Center, QQ games, etc.). Others can't modify your password and confidential information. If the number is found stolen, you can immediately lock the QQ account through the mobile phone lock and kick the other party off the line. The maximum period for locking the number at a time is 15 days, and it needs to be operated again to continue locking. User-oriented: Super QQ users who have upgraded the second-generation secret security and set up secret security mobile phones. If you are a super QQ or a member, you can go to official website to see the operating instructions. I have opened a super QQ and a member.