At present, the campus network can be divided into two categories:
1, campus network
If the dormitory is not covered by campus network Wi-Fi, the dormitory only provides network interface. In this case, you must buy a router, otherwise there will be no Wi-Fi. If the dormitory has campus network Wi-Fi coverage and the effect is good, there is no need to buy a router; If the effect is not good, such as bad signal or frequent traffic jams during rush hours, it is recommended to consider buying a router (if the dormitory has a network port). What, you said you didn't know what the net mouth looked like? Then we need to talk more. That square port (RJ45 interface) is a network port. Pull the shrapnel to plug in the network cable! (It's really heartbreaking)
2. Campus broadband
Some schools have campus broadband. Generally speaking, its bandwidth and stability are higher than campus network, but the price is also more expensive. It is suggested that telecom and China Unicom should be given priority, followed by mobile, and other operators should not consider it for the time being. It is better to have a campus network.
Campus broadband also needs to buy routers (some will bundle routers without buying them themselves, but the bundled routers are generally poor).
In schools with fierce market competition, you can dial directly with a router and enjoy a broadband in the whole dormitory; In the dominant school, you still have to buy a router, but you just can't enjoy it. Before you have a network, you need special software to dial. Other devices still have no network, and each account is often limited to 1 or connecting two devices at the same time (it can be cracked, but it may be checked).