I have this issue sometimes, but it varies a lot depending on phones. Some types of phones have longer delays than others. iPhone to verizon smartphones, and vice versa tends to be the worst. I have had bad experiences especially with the blackberry curve and motorolla Q. Interstingly enough, normal phones, such as my dad's rizr z3 (although that is international, but it works on CDMA unless instructed otherwise) has pretty much no delay even though its on verizon