Hacker News Reader

Great site, nice to see where the local towers are. I wanted to know what tower my phone was connected and this app gave me the Cell ID (CID) https://play.google.com/store/apps/details?id=com.wilysis.ce... which matched the map. Super cool!

View on HN

Much of that info is also in the hidden field test menu on phones. On iOS, if you dial *3001#12345#* and hit call, you'll jump into a menu with a bunch of stats on the network. It's not the friendliest UI though, the one you found is probably better. Other phones likely have other numbers to call, but the field test menu is pretty ubiquitous (it's equivalent to the cable modem 192.168.100.1 page).

EDIT: escaping asterisks

Nice! I googled the Android version and it's *#*#4636#*#*

But the CID from that screen doesn't match the website, there must be some kind of conversion required.

Edit: also escaped asterisks

CID is displayed in hex so it needs to be converted to decimal first.

Reply on news.ycombinator.com