What should enterprises do if they want to purchase a large number of SIM cards and traffic packages?

According to the current demand of IOT card market, most people choose the traffic pool mode, which is relatively cheap. If the company's purchasing data is relatively large, it can generally customize the package. This requires specific consultation with operators and agents.

2G/3G/4G card: 2G/3G/4G card is actually the same as ordinary SIM. Because the three major operators limit the voice and SMS functions of IOT cards and only retain the data transmission function, the traffic charges are much cheaper.

In addition, from the hardware point of view, the higher the standard, the more expensive the module. If the traffic required by the equipment is relatively small and the network speed is not high, 2G/3G will do. If the network speed is high, only 4G modules can be selected.

Extended data:

Precautions for using SIM card:

The metal contacts on the card should be kept clean to avoid dust pollution.

Avoid placing the SIM card at a temperature below minus 20 degrees Celsius or above 85 degrees Celsius.

When cleaning the mobile phone, please use a wet cloth or an antistatic cloth. Never use dry cloth (with static electricity).

Don't put the cell phone/battery in a very hot place, such as behind glassware in direct sunlight.

Don't use a mobile phone with damaged antenna.

Baidu encyclopedia -SIM card