12 Replies Latest reply: Dec 4, 2008 4:01 PM by David Soto2
David Soto2 Level 1 Level 1
What is data roaming? Does it cost extra?

Why doesn't my iPhone automatically connect to AT&T service? Sometimes I have to go directly to Carriers in the Settings to connect to AT&T 3G. Thank you in advance.

Mac Mini 1.25 Ghz PowerPC 1GB, Powerbook G4 867 Mhz 1.25GB, Mac OS X (10.5.3), iPod Classic 80 GB
Solved by Allan Sampson on Dec 3, 2008 6:42 PM Solved
I didn't know that Sprint has a GSM network in addition to their CDMA network.

Switching from AT&T's company owned towers to other carrier networks or "off-net usage" with AT&T in the continental U.S. is automatic and seamless. This will mostly be with T-Mobile in the U.S. and I'm not sure if there is a selection available for this which shouldn't be necessary for "off-net usage". And I haven't heard about this being available with Sprint, which has a CDMA network.
Reply by locondcoco on Nov 4, 2008 7:29 AM Helpful
data roaming is accessing data when your'e not on AT&T's network and is VERY expensive. there was a discussion yesterday where a user ran up a $4500 (yes you read that right) bill becuase he was traveling for work. it is the smart thing to keep data roaming OFF (which is why it is the default).
Reply by Allan Sampson on Nov 19, 2008 5:44 AM Helpful
There is no local data roaming or call roaming in the U.S. as a subscriber with AT&T. Wherever AT&T has coverage in the U.S. is included.

AT&T does not own all the towers in the areas where they have coverage in the U.S. AT&T calls this "off net usage"

The following was copied from AT&T's wireless service agreement.

+If your minutes of use (including unlimited services) on other carrier networks ("off-net usage") during any two consecutive months exceed your off-net usage allowance, AT&T may, at its option terminate your service, deny your continued use of other carriers' coverage or change your plan to one imposing usage charges for off-net usage. Your off-net usage allowance is equal to the lesser of 750 minutes or 40% of the Anytime Minutes included with your plan. AT&T will provide notice that it intends to take any of the above actions, and you may terminate the agreement.+

All replies

  • locondcoco Level 3 Level 3
    data roaming is accessing data when your'e not on AT&T's network and is VERY expensive. there was a discussion yesterday where a user ran up a $4500 (yes you read that right) bill becuase he was traveling for work. it is the smart thing to keep data roaming OFF (which is why it is the default).
  • Legs Hong Kong Level 1 Level 1
    I did not believe people who said charges were high when travelling. One week away has taught me that they are not high, roaming charges are astronomical. This is the one bad thing about iPhone, in all other respects it knocks spots off my previous Blackberry, Apple should try and get a system going where the costs when travelling are no higher than Blackberry's
  • Tamara Level 6 Level 6
    Roaming charges are not up to Apple. They are up to the cell carriers.
  • Legs Hong Kong Level 1 Level 1
    Sure roaming charges are up to the carriers but so are Blackberry's roaming charges. The fact is that the way the Blackberry works does not cost anything like the way the iPhone works unless you catch on that you have to rely on wifi when travelling. That said I love my iPhone
  • Tamara Level 6 Level 6
    With the BB, you aren't access the real internet but just cached copies on BB servers. This allows them to severely compress the pages and send you an image of the actual page. With the iPhone, you're accessing the actual internet site which uses more data.
  • David Soto2 Level 1 Level 1
    What about local data roaming? You know within the US. Will moving to a different state cost more?
  • Allan Sampson Level 10 Level 10
    There is no local data roaming or call roaming in the U.S. as a subscriber with AT&T. Wherever AT&T has coverage in the U.S. is included.

    AT&T does not own all the towers in the areas where they have coverage in the U.S. AT&T calls this "off net usage"

    The following was copied from AT&T's wireless service agreement.

    +If your minutes of use (including unlimited services) on other carrier networks ("off-net usage") during any two consecutive months exceed your off-net usage allowance, AT&T may, at its option terminate your service, deny your continued use of other carriers' coverage or change your plan to one imposing usage charges for off-net usage. Your off-net usage allowance is equal to the lesser of 750 minutes or 40% of the Anytime Minutes included with your plan. AT&T will provide notice that it intends to take any of the above actions, and you may terminate the agreement.+
  • David Soto2 Level 1 Level 1
    So does that mean I can data roam in the US? :S
  • locondcoco Level 3 Level 3
    in theory it is possible, if you're near the canadian or mexican border i suppose.
  • David Soto2 Level 1 Level 1
    Well, when my AT&T signal dies, I can go into Settings, and change Carriers for some reason. I get a list displaying everything from T-Mobile to Sprint. They even let you choose between 3G or not 3G.
  • Allan Sampson Level 10 Level 10
    I didn't know that Sprint has a GSM network in addition to their CDMA network.

    Switching from AT&T's company owned towers to other carrier networks or "off-net usage" with AT&T in the continental U.S. is automatic and seamless. This will mostly be with T-Mobile in the U.S. and I'm not sure if there is a selection available for this which shouldn't be necessary for "off-net usage". And I haven't heard about this being available with Sprint, which has a CDMA network.
  • David Soto2 Level 1 Level 1
    Yea, that's because Sprint doesn't. Sorry about that, I wrote the reply in a haste. Apparently, it's not as seamless on my iPhone. Maybe it's because the bars always hang around 1-2 and I actually have to force the phone to lose signal to be able to change carriers to get a decent signal.