but how do you explain heat on 5230, nothing similiar with new simcard on that.

the heat is not too much but i am more worried about batterylife, heard from someone, somewhere... that worn simcard drains battery cause it needs more voltage to connect due bad surface @ simcard

i dont even bother to try new on N900, cause it heats up anyways so might not be noticeable.

oh... OC @900