The government and enterprise cards issued by Taobao are not reliable. It is recommended that you go to a regular business hall to apply for the traffic you need.

The traffic cards purchased online are unreliable mainly because most of these mobile phone cards are IoT cards, which are easily locked when used for personal mobile phones, and there is no after-sales guarantee.

The so-called IoT cards are issued by the three major operators to corporate users for the networking of smart devices. They have independent number segments, no monthly rent, and the traffic fee is also very cheap. The appearance is the same as our ordinary mobile phone cards. Generally, these mobile phone cards are used on shared bicycles or some smart devices for networking. Since these cards have no monthly rent and the traffic is cheap, they are sold as traffic cards by some people.