First I installed the app on both iPhones. The first thing I noticed was that I could only move one contact at a time to the SIM card. If you want to do more than one at a time you have to pay. It’s $12.95 USD/$9.95 EUR. This should be ok though because we just want to move a few specific contacts. I started tapping some contacts I wanted and it would pop up the Name and Phone Number of the contact and I selected “ok” to transfer to the SIM card. I tried it on a few that just had email address and it didn’t do anything.

I did about 10 to 15 contacts through the letter A and then exited the app. I moved my SIM card to Brooke’s iPhone and all worked fine. Her iPhone is unlocked, so it connected to AT&T just fine. Brooke’s iPhone saw all the contacts on the SIM card right away through iSIM. I copied them all to her iPhone one at a time… I also tested making a call from iSIM which worked perfectly. I closed iSIM and went to Brooke’s contacts to see how things went. Unfortunately it doesn’t work as well as I hoped. For AT&T it only copied the name and work phone number. It didn’t copy the billing number, the image, or the business name field. Here’s a screenshot from both iPhones:

It also didn’t transfer the web address, address, etc. Only the first Phone number and Name. I tried a contact that was already in Brooke’s iPhone and it didn’t make two copies. One thing to be aware of is when you first insert the SIM card you need to wait a few seconds for the iPhone to connect to the carrier before opening iSIM. I had it crash a few times when opening it too soon. So, for basic contact transfer it works well but don’t expect all information to transfer. iSIM is available through the Makayama Source.