i have t mobile prepaid and i used to have a sidekick lx and used the dollar a day unlimited web browsing, texting, and email.

i bought a new samsung behold today and transferred my SIM card that was in my LX to my behold.
i added some minutes on my behold and have been texting all day long.
i went to check my balance on my minutes and i have the same amount as i did when i added minutes to my phone earlier in the day.

so is it possible that somehow i still have the dollar a day unlimited texting, web browsing, and email?
or is something wrong with my phone?



thank you so much for your answers!