The telecom card in Foshan, Guangdong Province cannot be read.

The reasons for not reading are base station failure, poor regional coverage and network congestion.

1. The base station equipment of the telecom operator may fail or be repaired, resulting in abnormal signal transmission. This situation is usually temporary and the operator will solve the problem as soon as possible.

2. In some places, due to remote geographical location, buildings, natural terrain and other factors, the coverage of telecommunication signals may be imperfect, resulting in the inability of mobile phones to receive signals.

3. In densely populated areas or large-scale activity places, such as gymnasiums and convention centers, network congestion may occur, resulting in signal quality degradation or inability to connect.