An upper-end mobile phone can do the SHA-256 bitcoin mining algo at around 50 times per second.

An Antminer S9 performs that algo at 14,000,000,000,000 times per second, and each day earns 0.00004433 bitcoin, worth about $1.

In other words, that single $125 rig can hash away at a rate that is equal to that of 280 million mobile phones.

You would need to mine on your mobile for 173 years to earn your first sat.

I just tipped you 1 sat, and saved you 173 years of mining.