Experiencing frequent signal loss on your Samsung Galaxy S25 Ultra can be frustrating, especially when you rely on your phone for calls and internet access. Fortunately, there are several ways to fix this issue and restore a stable cellular connection.

Solutions

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1. Restart Your Phone

A simple restart can fix minor connectivity issues.

Press and hold the Power button.
Tap Restart and wait for the device to reboot.
Check if the signal improves after the restart.

2. Toggle Airplane Mode

Turning Airplane Mode on and off forces the phone to reconnect to the network.

Swipe down from the top to access the Quick Settings panel.
Tap the Airplane Mode icon to enable it.
Wait for 30 seconds, then tap the Airplane Mode icon again to disable it.
Check if the signal is restored.

3. Check Your SIM Card

A loose or damaged SIM card can cause signal loss.

Power off your phone.
Use a SIM ejector tool to remove the SIM tray.
Take out the SIM card and inspect it for scratches or dirt.
Reinsert the SIM card properly and power on your phone.
If possible, try using a different SIM card to check if the issue is with the card itself.

4. Update Your Phone’s Software

Outdated software may cause network issues.

Go to Settings > Software Update.
Tap Download and Install if an update is available.
Follow the on-screen instructions to complete the update.
Restart your phone and check for signal improvements.

5. Reset Network Settings

Resetting network settings clears network-related glitches.

Open Settings and go to General Management.
Tap Reset > Reset Network Settings.
Confirm the action and wait for the phone to restart.
Reconnect to your network and check for improvements.

6. Manually Select a Network

Sometimes, automatic network selection fails, causing signal drops.

Go to Settings > Connections > Mobile Networks.
Tap Network Operators.
Select Search Networks and choose your carrier manually.
Wait for the phone to register on the network.

7. Disable 5G and Use 4G/3G

If 5G coverage is weak, switching to a lower band may improve stability.

Open Settings > Connections > Mobile Networks.
Tap Network Mode.
Select LTE/3G/2G (Auto Connect).
Check if the signal improves after switching modes.

8. Check for Carrier Service Outages

A network outage in your area could be causing the issue.

Visit your carrier’s website or social media for outage reports.
Use another phone to call your carrier’s support line.
If there is an outage, wait for your carrier to resolve it.

9. Disable Battery Saver Mode

Battery saver mode can limit background processes, affecting connectivity.

Open Settings > Battery and Device Care.
Tap Battery > Power Saving Mode.
If enabled, toggle it off.
Check if the signal improves.

10. Remove Any Signal-Blocking Cases

Certain phone cases can interfere with network signals.

Remove any thick or metal-backed case from your phone.
Check if the signal improves after removing the case.

11. Enable Roaming (If Traveling)

If you’re in an area with no home network coverage, enabling roaming may help.

Open Settings > Connections > Mobile Networks.
Toggle on Data Roaming.
Confirm any warnings and check if your signal improves.

12. Try a Different Location

Signal loss may be due to weak coverage in your area.

Move to an open area or near a window.
If indoors, try going outside to check if the signal improves.
If you often experience signal loss at home, consider a signal booster.

If your Samsung Galaxy S25 Ultra continues to lose signal after trying these solutions, contact your carrier for further assistance. You may also need a replacement SIM card or a professional diagnosis if there is a hardware issue.

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