How do you monetise your expensive $1000+ smartphone?

Use it to enhance your productivity

Tell me and I’ll do it today.

Now? Use it for work to call people.

In the future? Your device CPU completes small PoW calculations while browsing content to increase their prominence in search results.

https://medium.com/@loganfrombitcoin/proof-of-work-in-the-year-2040-dfe4807c22b8