I have a factory unlocked phone on Tmobile, but if I install an ICS ROM will that effect the unlock at all? It's currently on gingerbread and already rooted.
From what the rumors say, it will not re-lock the phone. It will leave it unlocked so it can still be used on T-Mobile. You just have to reflash the modem to work on their frequencies. It will put it onto AT&T modems.
Facebook
Twitter
Instagram