htc chacha abnormal reset

hello guys, just got a new htc chacha and 2weeks after purchse i got my first abnormal reset, is so painfully to see this coming from htc i love the phone can any one help plzzzz

thank u so much for your response, i truely appreciate. my htc chacha just resets abnormally with a notification message which says your phone has just recovered from an abnormal reset would u like to tell htc? there is no such message as kernel panic. i only downloaded whatsapp on it, i also returned the phone for a swap but the dealer said there is no warranty from htc and there is nothing he can do. i am so sad. feel like suicide

hellooo thanks again for your concern, here is the latest development, out of disappointment from my htc i got a new phone a black berry 9900 and a new sim card, i put the other sim which waz on the htc in the 9900 and the same problem occurred an abnormal reboot, but when i put the new sim in the Htc chacha the problem stoped and for three days now it has being working perfectly with no abnormal reset again, i came to a conclusion dat the problem was from my sim card and not the phone, however i contacted the services providers notifiying them of the situation they could not even explain why the sim reboots the two new phones abnormally. so i requested for a new sim with the same number which i put on the 9900 the same problem still occurs but i havent tried the sim on my htc. so i wonder what the problem is with my sim cause even the service providers cant explain its a 128k sim could there be any specific problem? am now battling to save my blckberry 9900 from an abnormal reset. aleast i know i can change the sim but my number is important for contact