Samsung phone call quality problems, blocking spam calls and fixing choppy calls

If calls sound muffled, cut out or you cannot hear the other person, first check the simple things. Unwanted spam calls can also be blocked from the phone itself.

Poor call quality

1. Check your signal bars. Move near a window or outdoors.
2. Turn Wi-Fi calling on if your provider supports it. See our guide on Wi-Fi calling and mobile data.
3. Remove any case or finger covering the microphone at the bottom of the phone.
4. Clean the speaker and microphone holes gently with a soft dry brush. Do not poke them.
5. Restart the phone.
6. Check the volume with the volume keys while on a call, and that the Speaker is not accidentally switched on.
7. Take out the SIM and put it back.
8. Test with Bluetooth off, in case the call is going to earbuds or a car.

If someone cannot hear you, check Settings, Apps, Phone, Permissions, and make sure Microphone is allowed.

Blocking spam calls

1. Open the Phone app.
2. Tap the three dots, then Settings.
3. Tap Block numbers and add the number to block, or open Recents, tap the number, then Block.
4. Look for Caller ID and spam protection in the same settings. It warns you about suspected spam. You may need to agree to terms.

You can also register for the free Telephone Preference Service in the UK, which reduces legitimate sales calls. It will not stop scammers.

Staying safe

• Do not give out bank details, passwords or verification codes to someone who rings you.
• Hang up and ring your bank on the number on your card.
• Spam texts can be forwarded to 7726, which is free.

Wording differs slightly by model and One UI version.

When to get more help

If calls drop in every location, others always sound distant, or the problem began after a drop or water, ask us. If it only happens at home, contact your provider.