Telcro

At last count I had 8 devices that connect to the internet.

Four phones, two of which I don’t use.
Two laptops.
One pad.
One home PC.

So let’s say 5 devices that need mobile access to the internet.

Does my Telco give me 5 SIMs under one account?

Yes but if I wanted 4G access on all 5 devices I pay a fixed cost of $20 per month for each device and the cost of the data on top.

So I what I do instead is use my phone as a modem for the other 4 mobile devices.

Which means pushing buttons, first on the phone, and then on the other device. And lots of them – what a rigmarole.

What is really needed is one button on the other device, say a laptop, which automatically turns on (and off) the wireless modem functionality on the phone.

This is another patent spoiler.