How to Stop Missing WhatsApp Calls on Galaxy S25 Ultra? Screen Won't Turn On Problem Solved

Why Won't Your Samsung Galaxy S25 Ultra Screen Wake Up During WhatsApp Calls? (Simple Fix Inside)

Your new Galaxy S25 Ultra should make life easier. But what happens when WhatsApp calls come in and your screen stays black? You hear the ring. You know someone wants to talk. Yet your screen won't wake up. This problem hits many S25 Ultra owners. It's not just you.

What's Really Happening Here?

The issue starts simple. You get a WhatsApp call. The phone rings loud and clear. But the screen stays dark as night. You can't see who's calling. You can't answer easily. You have to tap the screen or press the power button just to see what's going on.

This happens a lot after using Samsung's Smart Switch feature. Smart Switch moves your data from your old phone to your new S25 Ultra. It's supposed to make switching phones easy. But sometimes it creates new problems.

Why This Problem Exists

Samsung phones have special settings for app alerts. These settings control when your screen turns on. When you move WhatsApp data using Smart Switch, some permissions don't transfer correctly. The phone doesn't know it should wake up the screen for WhatsApp calls.

Think of it like this: Your phone has a list of apps that can wake up the screen. WhatsApp should be on that list. But after using Smart Switch, WhatsApp gets left off the list.

The Simple Solution That Works

Here's the fix that actually works. No need to delete WhatsApp. No need to lose your chat history. Just follow these steps:

1. Find the Settings app on your phone. Tap to open it.
2. Look for "Apps" in the settings menu. Tap on it.
3. Look for three dots in the top right corner. Tap those dots.
4. Select "Special Access" from the menu.
5. Scroll down to find "Full Screen Alerts". Tap on it.
6. Find WhatsApp in the list.
7. Turn on the toggle next to it. The toggle should turn blue or green.

That's it. Your screen will now wake up when WhatsApp calls come in.

Why This Fix Works Better Than Others

Many people suggest deleting WhatsApp and starting over. That's like burning down your house to fix a leaky faucet. You lose all your chat history. You have to set everything up again. It's too much work for a simple problem.

This fix is different. It goes straight to the root cause. It tells your phone that WhatsApp has permission to wake up your screen. Simple. Clean. Effective.

What If It Still Doesn't Work?

Sometimes you need to restart your phone after making this change. Turn your phone off completely. Wait ten seconds. Turn it back on. This helps the new settings take effect.

If the problem continues, check these things:

• Make sure WhatsApp is updated to the latest version
• Check if Do Not Disturb mode is turned on
• Look at your battery optimization settings for WhatsApp

Other Apps That Might Have This Problem

This same fix works for other calling apps too. If Telegram, Signal, or other messaging apps won't wake up your screen, use the same steps. Just enable Full Screen Alerts for those apps instead of WhatsApp.

Preventing This Problem in the Future

When you get a new Samsung phone, check the Full Screen Alerts setting right away. Make sure all your important calling apps are enabled. This saves you trouble later.

Also, after using Smart Switch, spend a few minutes checking your app permissions. Smart Switch is good, but it's not perfect. Some settings need manual adjustment.

Your Galaxy S25 Ultra is a powerful phone. It should work smoothly for everything you do. When WhatsApp calls don't wake up your screen, it's not a hardware problem. It's just a setting that needs adjustment.

This fix takes less than two minutes. It solves the problem completely. No data loss. No complicated steps. Just a simple setting change that makes your phone work the way it should.

Your phone calls matter. Don't let a simple setting problem make you miss important conversations. Fix it now and enjoy your S25 Ultra the way Samsung intended.