If you want to see an example of cellphone latency, watch your local news. When they send a reporter to cover a remote story these days, they nearly always use

If you want to see an example of cellphone latency, watch your local news. When they send a reporter to cover a remote story these days, they nearly always use a cellphone as a camera (cheap, ubiquitous, good image quality, and they don't need to pay a separate camera operator). When the anchor in the studio says "And now over to Lester, who is reporting from the scene" - there's a 1-2 second delay before we hear and see Lester respond.