| Iridium 2.4/10 kbits/sec | 2001 |
| SkyBridge | 2003 |
| Teledesic | 2005 |
| KaStar | ? |
The dates are the editor's best guess as to when the system will be operational. You do not get a refund if these dates are wrong. That said, send email to info@satphones.com if you think they are way off.