Yes you can. I used a jailbreak app on ios6 and I used llama on Android for this.

>The average for Boston is 21 meters; New York 27 meters; Austin, TX, 28 meters; Washington 29 meters, and Chicago 38 meters.

https://www.mobilemarketer.com/ex/mobilemarketer/cms/news/re...

I got my own room in my house with it, back in the 3G/4G days. I'm not sure what modern software and hardware can do it now, but I'm pretty sure it's even more accurate even without 5G.

>https://www.mobilemarketer.com/ex/mobilemarketer/cms/news/re....

>The average for Boston is 21 meters; New York 27 meters; Austin, TX, 28 meters; Washington 29 meters, and Chicago 38 meters.

>A number of factors can impact location data accuracy, including its source, which can include GPS signals, Wi-Fi and cell tower triangulation.

Seems like the figures they're giving is with wifi/gps signals, not just cell tower alone.

I am sure they were able to do it without it, but others can interfer. Triangulation was already a thing in the courts. https://www.eff.org/deeplinks/2018/06/victory-supreme-court-... It's in Carpenter vs US, for deducting he robbed a store from just the cell phone signals.