Why can't I call or text after the earthquake?

The mobile phone base station needs power supply and communication to the main exchange room. The power supply line may be interrupted during an earthquake, but the base station usually has a battery, but the battery of the base station may be damaged due to large vibration. Communication is transmitted by optical cable or microwave, and the optical cable is likely to be broken by earthquake, and the microwave antenna may also be deviated and not received due to vibration. Both the base station and the exchange room are precision equipment, which may be damaged by vibration. In addition, the earthquake has geomagnetic interference to the base station, but it can be eliminated after the earthquake subsides. Any of the above is true, and the mobile phone may not work. Of course, there is more than one operator now. One operator's base station is broken, and another operator's base station may be good enough to get through.

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