The cell phone in the office building has no signal.

Call 10086 to complain, tell them that your company has no cell phone signal, and ask them to send someone to test and optimize the network!

If the mobile signal is bad or bad, you can only complain to 10086, let the mobile network optimizer check it, or repair or add base stations. Other companies cannot be trusted!

When you make a call, record it with your mobile phone in advance, take down the phone number of the customer service representative at 10086, and directly ask him to transfer it to the agent manager at 10086 to complain. If his attitude is still barbaric or even unreasonable, you can tell him that it has been recorded and complain to the Ministry of Information Industry: 12300. Then wait for the apology call from 10086 and tell them to solve the problem of no signal!