What if "Unable to verify server identity" pops up on iPhone-

When you are using the iPhone normally, have you ever encountered a situation that the "server identity cannot be verified" window pops up on the iPhone without warning? As shown in the figure below:

Moreover, this interface pops up more than once, and sometimes it pops up several times in a row, which makes users feel very bad. Click on the details and you can see that the unverifiable address is "imap.hekouxin.com".

At first I thought it was a system problem. Later, Bian Xiao found that this pop-up window would still appear even after updating to the new system version. Bian Xiao tried to disconnect the 4G network and WiFi connection, but the pop-up window still exists.

What the hell is going on here?

Problem description: What should I do if the iPhone I am using suddenly pops up the "Unable to verify server identity" window? What should I do if the "Unable to verify server identity" window pops up on my mobile phone?

Solution: What causes the problem of "server identity cannot be verified"? Bian Xiao searched and found that many users have encountered this pop-up, and some have received this pop-up since last night.

Bian Xiao learned from people familiar with the matter that the reason why the server identity could not be verified popped up was that there was a problem with China Mobile's voice mail service, but the specific problem was still unclear. It is reported that the certificate of voice mail has expired, so only mobile users will be affected.

However, from the current situation, not all mobile users will have this problem, only some users will encounter this problem.

But because the certificate has expired, our users can't solve it. I believe China Mobile will handle it soon. Let's wait patiently.