[patrickj]

I hope / imagine after 9 days from your original post, you may now have this resolved. If not, one quick thing to try if you have not already is just resetting the passphrase used on your router. You'd have to re-config it on your laptop etc., but it's worth a quick try.

@ snpri3 - you said "maybe you have a Mac Addressee on your Router without knowing it ..."

All networked devices have a MAC (Media Access Control) address - network cards in PCs, routers etc. What you may be thinking of is that it is possible to filter by MAC address on many routers - as in, set it so that *only* devices (laptops, iPhones etc.) with specified address can connect to the router. Generally, you would know if you've set that up,as you need to manually input the MAC address for each device you want to allow access from. If that's setup on the OP's router, he could choose to turn it off, or add the iPhone's MAC address ...