I have have received two replacement phones in the last 5 days with the same problem as the original.When on a call and asked to input some numbers from the dial pad....like voicemail password, the dialer will take maybe one or two numbers and then take no more and black out. Can get it lighted again but cannot input the numbers,...like it is dead. Verizon might as well remove voicemail from its services. Serious issue. Phone is running Android 2.3.4.and System version1.3.380 MB870 Anyone else have this problem???