I have a client who has ADSL 2+ connection in his area. a few months ago when thunderstorm happened, he reported that he could not get onto Internet so I went to his place to check connection. And I found that ISP was okay since I was able to connect to Internet with new modem. So, I replaced the modem with new modem and added a brand new Linksys wireless router (WRT1900AC) since he also complain about his old wireless router (he wanted wider signal).
A few days ago, he reported that Internet kept dropping out when the weather is bed so he had to restart the devices to get them working. And I am not sure what is causing the issue.
I just want to know why the devices are affected by thunderstorm. The devices are connected to surge protector but it looked a bit old not sure it is still functioning.