IPhone6 needs verification code after returning to the factory, but the phone can't receive SMS. What should I do?

1. The user's own mobile phone number is blocked by the operator. You complained to the operator that this notification message was spam, which caused the message to be blocked by the operator. Solution: You need to contact the operator to solve this problem.

2. Blacklist settings such as SMS security software. You used to set strict interception rules in mobile phone text messages. Solution: Check SMS blacklist settings, menu-> Harassment interception-> Settings, respectively, to see whether there is an interception mode and black and white list are not allowed to reach the number of SMS.

3, mobile phone internal browser privacy settings. The security level of the browser is too high or the setting to block "third-party Cookie and website data" is set. Solution: Reset the security level of the browser or turn off the setting of "blocking third-party Cookie" in the browser, and set-> Privacy settings-> Content settings.

4. The number of short messages sent by your mobile phone exceeds the maximum limit of one day. In order to avoid short message bombing and waste of resources, some mobile phones set up a maximum of ten short messages per mobile phone number every day. Solution: You can't log in to the service that needs to verify your mobile phone on the same day.

5, network wireless network, communication and other delays. Due to network or geographical problems, the authentication information sent by the server may be delayed. Solution: Wait patiently, or try again after counting seconds.