theres a yellow triangle right next to gprs on my phone. i tried doing a hard reset(twice) but still it wont go away.

anybody know what the yellow triangle notification is for?

Based on your description, you are seeing the orange or yellow roaming indicator.
Regards,

More to say... For additional information, please refer to your productsxxx8217; Getting Started Guide - Status indicators.
Regards,

why do i have roaming? esp i'm in the same spot for the past 8months or so. i never seen this before. i hope tmobile will not charge me for roaming inside my apartment :/

If you have a nationwide plan, you won't be charged for roaming. Depending on where you go, you can roam on a number of networks. I also have Tmobile and when I go to Vermont, I am roaming on VStream and USA890 and I haven't been charged a penny more.

yes i have a nationwide plan. i just find it to be weird. sleeping on same spot for almost 8months or so, then one morning you wake up and found a notification sign that indicates roaming.