1, network reason: the network connection is unstable, resulting in the failure to transmit the verification code information to the mobile phone in time.
2. Service provider blocking: Some mobile phone service providers may block some verification code messages, so it is recommended to contact the service provider for consultation.
3. Insufficient storage space of the mobile phone: Insufficient storage space of the mobile phone will affect the normal sending and receiving of short messages by the mobile phone. It is recommended to clean up the storage space of the mobile phone.
4. The software version is too old: The old version of the paper airplane software will also affect the reception of the verification code. It is recommended to update to the latest version.
5. Wrong mobile phone number: Please double-check whether the phone number is correct, and pay attention to whether the international area code before the phone number is accurate.