Pretty much the same, but less chance of permanent damage. Without enough voltage ones become zeros, cats and dogs start living together, mass chaos ensues! If you start seeing generally wonky behavior after undervolting you may want to revert back. And when you undervolt try to keep your phone the same for a few days so you'll notice the difference. Installing and deleting a dozen apps a day makes it a little hard to pinpoint what's causing the issues.
Facebook
Twitter
Instagram