OK. I have the latest official Kies SW download, and an still a AT&T customer in good standing.
Here's my questions (and I think, but want to confirm before I play) the answers are what I think:
I) If I install CW or a new ROM will it affect my CONTRACT with AT&T? IE, void my grandfathered data plan?
2) same question on unlocking... (I am contemplating finally upgrading to a G 4, (or G5?) and giving this to my wife
to use on Tmobile or one of their virtual carriers.). if I unlock now does this also do anything to my plan?
3) I am presuming that the answer to 1 and 2 are BOTH "no effect to carrier."
I am also presuming that my getting a new phone will not affect my grandfathered plan
care to comment/condemn or agree?
I'm also on AT&T and I rooted my phone almost two years ago. I've had many different ROMs and have had no problems at all. It hasn't affected AT&T or my contract. From my experience, you'll be just fine.
Of course, if you give the S2 to your wife and change carriers, you'll need a new SIM card for that carrier.