Usually there are the following conditions caused by:
1. Among the wireless routers, there are more Internet access devices. Because of bandwidth sharing, if there are watching high-definition super HD movies, or downloading large-capacity data packets, the bandwidth is naturally crowded, and the network speed of other Internet access devices will be affected;
2. Cracked WiFi must be a weak password. Well, if there's a hack, someone else will hack this Wi-Fi. A lot of people, the signal bandwidth is narrower, slow is inevitable;
3, of course, too many people, the network speed drops, the owner of the WiFi will also be aware, may have action, limit the traffic of other Internet devices, is also one of the reasons why people feel slow;
4, the people who rub oil and water, their mobile phones have a problem, will rub not smooth, change a WiFi try to rub.