Mac Mini Network dropping

I have a Mac Mini sharing a Verizon DSL network with an iPhone 6 and an older iPad.   Except for the iPad, the devices are all up on the latest Apple software.  My iOS devices are typically cabled to USB ports when I'm home using my Mini.
It just started happening recently.   After breezing along for a while on my Mac, my internet service will die, frozen progress bar on accessing web pages, Safari NOT crashed, I still have normal Mac functions except for internet.  Often, restarting the DSL router solves the problem.   Also, restarting the computer has solved the problem occasionally.   I've tried networking the Mini wirelessly AND by ethernet, same result.
The only thing that always works is using iPhone's personal hotspot cellular connection to the internet via USB.   But I have to be careful about my data limits.
My first thought was that my carrier's DSL router and service were repeatedly failing.   So far, they're only interested in having me restart my router, and they don't seem to grasp that I'm having to do this 8 times a day
Now I'm wondering if Yosemite on my Mac mini is causing the problem.   I don't see recent posts on this board about networking problems though.

Hello whsiii,
Thanks for the question. After reviewing your post, it sounds like you are being disconnected from the internet. I would recommend that you read these articles, they may be helpful in troubleshooting your issue.
OS X Yosemite: If you can’t connect to the Internet
OS X Yosemite: Solve problems connecting to the Internet
Thanks for using Apple Support Communities.
Have a nice day,
Mario

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