Mobile 4g siri can't answer.

IP6 indicates that the same problem has been encountered. Dalian Mobile's 4G and siri are both good and bad, and they have been running well under wifi. He called Apple Customer Service and didn't know what was going on. I've tried everything, and it's still good and bad, completely out of control. Finally, I found that the mobile network has closed a port, so I can brush the network, but I don't want to brush it in China. Let the mobile official find this problem and solve it.