Why does the mobile phone automatically send text messages to strange numbers?

Don't go to the business hall. Ask me. Generally, there are the following situations. First, there is a virus in the mobile phone. Need to take the phone to after-sales inspection, or restore the factory settings. 2. Check whether the mobile phone has anti-theft function. Some anti-theft functions can be set up to automatically send a large number of short messages after changing the mobile phone card, so as to achieve the purpose of consuming other users' phone bills. If you buy a mobile phone in a regular channel, you can see if it is inadvertently set. Third, the hardware problems of parallel mobile phones fourth, network reasons. General peripheral users may also appear at the same time, or you can call 10086 to respond.