If calls on your OnePlus 15 sound too quiet, even at full volume, it can be frustrating. Voices may feel muffled, faint, or hard to hear in normal environments. This problem is usually caused by simple settings, audio restrictions, or physical obstructions, and most fixes take only a minute to try.
Why Your OnePlus 15 Call Volume Is Too Low
- Call volume is set low during active calls.
- Speaker or earpiece openings are partially blocked.
- Audio balance or accessibility settings are misconfigured.
- A case or screen protector is covering the earpiece.
- Temporary software glitches affecting audio output.
1. Increase Call Volume During an Active Call
Call volume on Android is separate from media volume. If you do not adjust it during a call, it may stay low even if other sounds are loud.
Make a phone call, and then press the Volume Up key repeatedly.
Watch the on-screen indicator, and make sure call volume reaches the maximum level.
2. Check Accessibility Audio Balance
If audio balance is shifted to one side, call audio may sound weak or uneven. This often happens accidentally and affects voice clarity.
Open Settings, and then tap Accessibility.
Tap Audio balance, and make sure the slider is centered.
3. Remove the Phone Case and Screen Protector
Some cases or thick screen protectors partially block the earpiece. This reduces the sound reaching your ear during calls.
Remove the phone case, and then clean the top speaker area gently.
Make a test call, and check if the volume improves.
4. Clean the Earpiece Speaker
Dust and debris can build up over time and block sound output. Even a small amount can noticeably reduce call volume.
Turn off the phone, and then inspect the earpiece closely.
Use a soft brush or dry cloth, and clean the speaker opening carefully.
5. Restart the Phone
A temporary audio glitch can affect call volume without warning. Restarting refreshes the sound driver and restores normal behavior.
Press and hold the Power key, and then tap Restart.
Wait for the phone to boot up, and test call volume again.
6. Check for Software Updates
Audio issues are sometimes fixed through system updates. Running outdated software can leave known bugs unresolved.
Open Settings, and then tap System.
Tap Software update, and install any available updates.
Low call volume on the OnePlus 15 is usually caused by settings or simple physical issues rather than hardware failure. Once you adjust the right options and clear any obstructions, call audio should return to a comfortable level.
FAQs
Why is call volume low only on certain calls?
Some calls sound quieter due to poor signal quality or compression from the other caller’s network. This is normal and not always caused by your phone.
Does Bluetooth affect call volume?
Yes. If a Bluetooth device is connected, call audio may route through it automatically. Turning Bluetooth off can help isolate the issue.
When should I contact OnePlus support?
If call volume remains low after cleaning the speaker and checking all settings, the earpiece hardware may be faulty. In that case, professional inspection is recommended.
