My mobile phone Xiaomi 1S has a good message and no problem with the signal, but why is the Internet slow?

First of all, if your card is a mobile card, then I'm sorry that the mobile card can only support E-network, but not 3G-the network speed of E-network is about 15k/s, and Unicom's standard 3G network can reach 50k/s, which means that it takes 7 seconds to use a mobile card for a 100k webpage, while Unicom's 3G card only takes 2 seconds! Please see how to change the card to Unicom. Second, check the access point of the mobile phone. If you have 3gnet, click this access point. This is a 3G network, and only 3G cards are available. Finally, if the 3G card doesn't work, there may be something wrong with your mobile phone. You can go to the mobile (if your card is mobile) business hall for consultation. Professional answer, hope to adopt!