So here's the pickle. (And first post) TWC router with built-in wifi right. Come home every night, fire up PS4 (connected via CAT 5), nothing else is on my router wirelessly at this point ( have a Tablet but it has been off for months and was put in airplane mode before I turned it off), router is mounted to the wall. I can see the slow steady blink of the lan from the PS4. However, I notice the rapid wifi light going off too? iPhone wifi is still off at this point and it's only able to use 3G but here's the kicker I'm asking about. Wifi flashy connectivity indicator stops when I power the iPhone off. Any thoughts? Guess's? Ect. Again, I have used/still use a few net monitor apps(not the free versions either); Net analyzer, system monitor pro, and fling. My network is password blocked and unique for both login and pass so I seriously doubt it's a neighbor (I disabled the guest option when I first got the router). I have performed the "iPhone power down -> wifi stops" multiple times and I get the same results. The silly reason I ask all this is because I want to know if it's the phone using the wifi without permission (anyone else's do this?) or (doubt it) if somebody is getting free wireless internet and if so, they are waaaaaay smarter then I at network security.