I wouldn't worry about it too much until it actually happens. All phones only run on certain bands/frequencies. So most likely older phones will not connect to a network. Some are 3G/4G, those should continue working. 4G towers might get some type of power boost for coverage.
But what exactly are you talking about? Is this a pun joke? Was there a Tacoma option for internet connectivity from the truck itself? Where the truck's equipment is a hotspot?
Here is Toyota's link to 3G networking being retired and how it affects certain vehicles:
https://www.toyota.com/audio-multimedia/support/3G-faq/
It's entitled
Safety Connect® 103 – Future Disablement of Vehicle Wireless Network
It says "Toyota Safety Connect® 103 will no longer function as of November 1, 2022. Affected Safety Connect® services include Automatic Collision Notification, Enhanced Roadside Assistance, 110 Emergency Assistance Button and Stolen Vehicle Locator."
There's also an option called Entune that came with my 2016 Tacoma 4x4 TRD Sport, but is not active on mine. I was wondering if that is going to be affected.
"The Entune system is a versatile piece of technology that makes it easy for drivers to have access to their multimedia and mobile devices without having to compromise their safety.
Hands-free voice navigation, point of interest search, audio streaming and more is available for drivers with the Entune system, which is available in all new Toyota vehicles for a fee."
I just found out, for example, I could play a DVD on the 7 inch display, but to do that I have to pair my phone via Bluetooth, and then download an APP for that, so that starts sounding like internet access, and again, since the vehicle is 2016, its running 3G, which will become OBSOLETE in 2022.
