If you stop speaking on the phone, you're letting your stutter win. I just stumbled across the reddit group the other day. The more I see of it, the more I realize why it was so important to push myself out of my comfort zone when I was younger and force myself to talk to people or in front of groups of people. If you hide from your stuttering problem and avoid talking at all costs, your speech will never get better. I remember when I couldn't say more than two words at a time. You people need to push yourself out of your comfort zone. If people laugh or bully you, you now know who you never have to speak to again. Treat those people like they don't exist (it eventually gets under their skin). Bullies are a waste of your time. Just ignore them or punch them in the face that works even better, actually. Having a stutter really shows you who the respectful people are or not. Overall, the only way to get better is by putting yourself in situations to speak to people. Teach yourself little tricks to get yourself unstuck from words. For example: Stop, take a deep breath, and start over. Learn the dictionary, have different words you can switch to that mean the same thing, I do that all the time. Don't hide from who you are. Embrace it and take advantage of it. I wouldn't be where I'm at in life if it wasn't for having a speech problem. Don't get me wrong, I hate it and hate talking, but avoiding it won't help anything. In the end, don't be a coward. Put yourself out there, you might surprise yourself.