Q: Yosemite 10.10.3 / wifi  problem

Howdy Ednew2mac,

It sounds like your Wi-Fi connection is stopping unexpectedly when you have the Continuity features enabled between your devices. I would use the last three steps in the following article to help troubleshoot that:

Wi-Fi Quick Assist - Apple Support

Restart your Mac

Sometimes a simple restart can clear up issues. From the Apple menu (), choose Restart. Once it's finished starting up, try connecting to the network again.

Restart your base station or router

Restart your home network router using the method recommended by its documentation. This may include disconnecting the power cord for 10 seconds or more. Note that any Internet services including a VoIP-based phone will not work until the router restarts.

Update your firmware and software

If you use an AirPort base station, use Software Update to check for available updates. If you use a third-party wireless router, check the manufacturer's website for any firmware updates available for your model. Download and install the software using instructions they provide.

 

Learn more

Still having issues?

• For assistance with your iPhone, iPad, or iPod touch see iOS: Troubleshooting Wi-Fi networks and connections
• See the this article for more troubleshooting steps.

Thank you for using Apple Support Communities.

Regards,

Sterling

Thanks for the update. The next time you would normally toggle Wi-Fi off then back on, use the Wireless Diagnostics Assistant that is built into your Mac OS to see if that helps you determine what the issue is.

About Wireless Diagnostics

I am also still a little unclear as to what the issue is. Was I correct in my initial assessment? if not can you elaborate more on what is happening?