yeah, not sure how that works. we did a phone swap as well in the same way but didn't touch the sims. but everything seems fine on the accounts now and with the phones. she has my 5 and i am using the new 6. again, didn't do anything with the sims. so if that's true, my guess is that it doesn't have to do with the sim cards. because we had the same issue before but didn't touch the sims, and now it's fixed. i could have sworn it happened after an itunes sync. i think it's just a software thing. but unfortunately i don't know the best way to fix it. hopefully someone with more knowledge here has a solution. i'd be interested to know myself.