I recall my ancient Symbian based Nokia N8 and E7 had permanently lit-up AMOLED displays that switched to a clock screen saver when the phone was locked, notifications were shown just below the time display. If that's what you mean, then no the iPhone does not do that. I'm not sure which, if any, current phones currently have that ability. It took a while to get used a normal blacked out on lock LCD after switching to an iPhone, but it doesn't bother me anymore.