Nikos macrumors 68000 Original poster Nov 20, 2008 1,652 323 New York Sep 14, 2012 #1 Tap on "upgrade this device" and then on your number and change it to the one you wish to upgrade. At first glance, it doesn't look like upgrading an additional line is an option but this works. Hope this helps someone.
Tap on "upgrade this device" and then on your number and change it to the one you wish to upgrade. At first glance, it doesn't look like upgrading an additional line is an option but this works. Hope this helps someone.