add a amall pice of thin metal or any thing thin sized spacer at the area between the sim card and battery underside to increase rigidity and make the assembly compact. like that jerk or know or any hard vibration will not cause conatc problem between sim card and hp sim card sitting contacts.
sometimes u buy those fancy hp casing outside not all from the original tooling specs of the h/p manufacturer some chio one so fitting and removable component sitting may be affected orso.
if this happen once in a while okay one lah...but if often then may want to get the phone some servicing?
