I am hearing impaired and seldom use my optimus V for phone calls. But occasionally I do need to make a phone call. The volume of the speakers at maximum is too soft for me to hear the person I'm calling. There are volume boost apps available on Google Play. I would like to know if anyone has tried one of these apps and can report that the app worked and did not damage the speakers. I contacted Virgin Mobile to ask about a safe app and the only reply I got was to purchase a TTY device. Well, they're expensive but more to the point, they're huge, certainly not something you could carry even in a large pocket. Thanks.