Sometimes when I get a phone call, I get the Accept / Decline Buttons on my phone. Other times, I don't get these options and only a choice to slide the screen to unlock to answer. This has been annoying, sometimes difficult to answer, and at times I have missed calls. I read in another post that I can simply click the: Green button / Red Button on the phone to answer or send to voicemail. Question: Why is it that on some calls I get the Accept / Decline and on other calls I don't? I'm not sure if it has something to do with calls numbers matching my contact list vs. unknown numbers. Sometimes I get it, other times I don't. Is there a way to set my phone to get: Accept / Decline every time?