My apologies if this has been asked and answered already:
How does one device know that the other device has iOS 5?
After all, it just has a phone number to work with.
- Does it ask the Apple mothership to look them up in some secret iPhone database?
- Does it first send a hidden SMS to ask the other device? (my guess)
- Or... ???
Thanks!
it looks up the email or phone number to see if it ties in with the persons apple ID.