Old router and modem
My internet connect, esp wifi is unstable. Sometimes, the upload speed is less than 1mbps. After switching to 3 routers, things did not improve. A CS went through some steps with me and we tested the signal. The internet connect was very strong at that time. So she couldn't detach any problem.
My lan cable couldn't get any signal from modem when I connect it to my laptop. So I suspect the issue is the modem. How do I get StarHub to check the device? My household are WFH. So I cannot bring it to the shop.