thats right. iPad has no phone app for you to make cellular call over mobile network. but some people manage to jailbreak it or use the right app for IP call, with a bluetooth headset of course.
For iPad, one can only use mobile broadband sim card which supports sms and mobile data only. I'm currently using mobile share with singtel which tethers the mobile data to my key line, which is cheaper than having a separate mobile broadband plan.
Mobileshare is priced at $10.70 monthly, inclusive of GST and comes with a 12months contract. Free additional 500MB to your data bundle and is compatible to combo plans.
Alternatively, iPad users can also consider mobile broadband.
Not to mention, both MBB and mobileshare comes with singtel wifi yo... nothing beats streaming toggle at food republic after a sumptuous meal paid with singtel dash, after 5% off and 10% off for passion card..
just sharing the available options TS have in view to her/his inquiry lor