A lot of DSL modems actually have routing functionality that interferes with your actual router. They tend to use a PPOE setup, which means you have to tell your modem to not do PPOE and use the settings that it had to tell your router it's a PPOE connection, complete with the login user/pass and external IP address the modem was getting. I know that sounds complex, so maybe just google on that subject with some keywords and you'll likely find the steps for it.
Has anyone tried to fix their own smartphone screens? I have a couple with cracked glass, and the only time I tried to do it was on an old beater phone. A Droid Maxx is a completely different beast, though.