Unicom's second real-name authentication has failed to upload.

Unicom failed to upload its second real-name authentication for the following reasons:

1. Device or network problem: the authentication device may be faulty or the network signal is weak, resulting in the upload failure. It is recommended to replace the equipment or try to upload it in other network environments.

2. Photo format or size problem: If the ID photo cannot be uploaded when the mobile phone number is activated, it may be because the photo format or size does not meet the requirements. It is suggested to upload it again or contact Unicom's manual customer service to assist in verification.

3. Time or network congestion: upload failure may be related to specific time or network congestion. You can try to change the time and upload it again, or choose a time period when the network is used less.

4. Software version problem: If authentication always fails, it may be caused by low software version. It is recommended to update the software to the latest version.

5. Real-name registration: If you encounter the problem that you can't upload pictures when registering online, it may be because the format and size of the uploaded pictures don't meet the requirements.

To solve this problem, it is suggested to check the equipment and network connection first, and then try to contact Unicom customer service for more help and guidance.