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<p data-start="3567" data-end="4362">I'm trying to fix speaker issues on my smartphone without replacing any hardware if possible. So far, I've cleaned the speaker grille, restarted the device, checked my Bluetooth settings, and tested the speakers using an online browser tool. The sound has improved slightly, but I'm still experiencing occasional distortion at higher volume levels. Before visiting a repair centre, I'd like to know whether there are other troubleshooting methods worth trying. Some people recommend playing cleaning frequencies, while others suggest updating the operating system or resetting audio settings. I'd appreciate hearing from anyone who has successfully fixed speaker problems without opening the device. Which methods worked best for you, and how long did it take before you noticed improvement?