HTC Sense shows missed call & SMS notifications on the lock screen. I've found it to be an ideal notification experience, personally. Spam is a problem best so

HTC Sense shows missed call & SMS notifications on the lock screen. I've found it to be an ideal notification experience, personally. Spam is a problem best solved by removing the offending app. It's not like they can't do worse things to your phone (unless you're one of the few who pay attention to that permissions screen).