Stop wasting your phone’s speaker volume — here’s how to unlock the full 85dB – makeuseof.com
Most phones have dual speakers that get reasonably loud — until you’re in a noisy restaurant, a car, or trying to share a video with someone across the table and then “reasonably loud” isn’t enough. The good news: you can get a meaningful jump in volume out of the phone you already own, with no accessories and no cost.