New Can't merge calls


Mar 20, 2012
I haven't tried this on previous versions of the V4 MIUI but even though I have the option to merge two calls on my SGS II (MIUI 2.7.6) when I try to do it I get an error message that says "unable to merge calls", before you ask I have checked with my carrier and the ability is there on my plan and I could do it when I was using Samsung's roms.
IS this a MIUI limitation or a bug??