Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
amaccuish
on June 24, 2023
|
parent
|
context
|
favorite
| on:
Real-time messaging
BlackBerry operated it's own GPRS APN, so all Blackberries registered directly with it from the tower, and so it always had their up-to-date location on the network.
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
