Unexpected alternative view to WiFi performance

This goes a bit against the grain but thought it is interesting enough to post.

Wife's iPhone 5S on iOS 7 latest version. Cannot get WiFi in the main bedroom because there are three metal partition walls between the router and the bed. So I put in a Powerline solution (which uses the apartment electrical wiring) just so she could have WiFi when relaxing on the bed..............you do whatever you can for a wife 8 months pregnant

Wife's iPhone 5S on iOS 8.0.2 suddenly WiFi is working in the bedroom. It's not a wonderful signal but it is there and it was not before and nothing else has changed.

Go figure