Huawei router b3 16 Unicom card has no signal.

1. Shut down again and try again;

2. Replace the mobile phone card with the mobile phone of family or friends and try again;

3. See if there are any signals from other Unicom users around; If the above situation has not been solved, it is recommended to contact the local manual customer service for handling.

China United Network Communications Group Co., Ltd. (English name: China Unicom, abbreviated as "China Unicom" and "Unicom") was formed by the merger of former China Netcom and former China Unicom on June 6, 2009. It has branches in 365 and 438+0 provinces (autonomous regions and municipalities directly under the Central Government) and many overseas countries and regions, which is the only one in China.