Your notifications appear on screen, but there is no sound — so you miss messages, calls and reminders. This problem is almost always a settings issue, and it is usually fixed in under two minutes once you know where to look.
First, check the sound for that specific app. Go to Settings > Apps, tap the app (for example WhatsApp), then tap "Notifications". Make sure notifications are turned ON, and tap each notification category — like "Message notifications" — to check its sound is set to a real tone and not "Silent" or "None". Android lets every category have its own sound, so one wrong category can silence an app completely.
Second, check Do Not Disturb and silent modes. If DND is on, notifications arrive silently. Swipe down the quick settings panel and make sure "Do Not Disturb" is off. On iPhone, check Settings > Focus > Do Not Disturb, and also check that the silent switch on the side of the phone is not turned on.
Third, check battery optimisation. Some phones aggressively kill apps in the background to save battery, and a killed app cannot play a notification sound. Go to Settings > Apps > the app > Battery and set it to "Unrestricted" or "Don't optimise".
Also check the media and notification volume sliders separately — turning down media volume does not affect notifications, but the notification volume slider might be at zero. If one app still stays silent after all this, clear its cache or reinstall it.
If NO app plays notification sounds, the speaker may be faulty. Test a ringtone — if that is silent too, visit a repair shop for a speaker check.
---
📍 Mian Traderz, Sahiwal — Mobile Repairing Center
📱 WhatsApp: 0347 8750000
🔧 #MobileRepairing #MianTraderz
