3 ms·

Nah, The GSM standard allows for a one-to-many relationship between MDNs & IMSIs. It's just a row in a database at a telco. Several providers already offer the

• namibj 8y ago
  My dad's old car radio/phone made use of that. It took an ID-1 SIM card. You know, like a non-embossed credit card, without the fancy printing. It got eventually replaced by a different radio which could use data stored on a CD fed to it's CD player to provide navigation, but I don't remember if that one even had GPS included. I guess it did, but the UX was lacking, mostly due to the small, rather dim TN panel on the cover over the CD slot. The handover (between cells) had some issues when driving, so sometimes calls dropped when you crossed cell boundaries. In retrsospect it seemed like a race condition in the logic that notes where to route an ongoing conversation to in the event of a cell switch, combined with both phones fighting over which cell this number is in. The nice thing about the old phone/radio was the classic green backlit monochrome dotmatrix text display.