The differences among China Mobile, China Unicom and China Telecom are: different network structures, different failure rates and different network quality.

I. Different network structures

1. Mobile fiber-optic broadband: Mobile fiber-optic broadband network is a large-scale distributed ip system of local area network, which makes the network structure weaker than that of China Unicom and China Telecom.

2. Unicom's fiber-optic broadband: Unicom's fiber-optic broadband network is a large-scale metropolitan area network distributed ip system, resulting in a stronger network structure than mobile, but weaker than telecommunications.

3. Telecommunication fiber-optic broadband: Telecommunication fiber-optic broadband network is a large-scale distributed ip system of large-scale local area network, which makes the network structure stronger than that of China Mobile and China Unicom.

Second, the failure rate is different.

1. Mobile optical broadband: Due to poor network structure, the failure rate of mobile optical broadband is higher than that of China Unicom and China Telecom.

2. China Unicom's fiber-optic broadband: The failure rate of China Unicom's fiber-optic broadband is lower than that of China Mobile, but it is higher than that of China Telecom because of its better network structure.

3. Telecom fiber-optic broadband: Telecom fiber-optic broadband network has the best structure, resulting in a lower failure rate than China Mobile and China Unicom.

Third, the network quality is different.

1. Mobile fiber-optic broadband: Most websites, servers, games and other applications that rely on the Internet are export trunk lines mainly based on telecommunications and supplemented by China Unicom. Therefore, the mobile optical fiber broadband needs to be transferred, which leads to the network quality being weaker than that of China Unicom and Telecom.

2. Unicom's fiber-optic broadband: most of the websites, servers, games and other applications that rely on the Internet are export trunk lines with telecommunications as the mainstay and China Unicom as the supplement. Therefore, mobile optical fiber broadband does not need transit, resulting in better network quality than mobile, but weaker than telecommunications.

3. Telecommunication fiber-optic broadband: Most Internet-based websites, servers, games and other applications are export trunk lines with telecommunications as the mainstay and China Unicom as the supplement, so mobile fiber-optic broadband does not need transit, resulting in better network quality than mobile and China Unicom.