questionsanyone have iphone 4s with sprint? what is…   I have
seen this on others' sprint phones. I believe they have an
"extended" network; a lease of some towers perhaps, that aren't
roaming, but also isn't their tower.  For instance, if you were
in Puerto Rico, you would probably see "Extended", but in a
foreign country where they have no agreements, you would be
roaming.   Interesting, but I'm seeing it while I'm in my school
building. Parking lot is okay, but inside is extended, even with
full connection.   @trinnic: Exactly.  Sprint just doesn't own
that specific tower, so your current service is being provided
by another company at Sprint's expense/deal with that company.
@dpiercy85: The school might have it's own type of "tower" for
inside. I have one for my house from AT&T.   I know this post is
old, but I just signed up with sprint and got the iphone4s. I
noticed that mine says "extended" where I work, but the problem
is that this drains my battery. I won't use my phone at all, and
when I check it