How to Fix Bluetooth Audio Cutting Out on Your Phone

Published 2026-10-16 · Marion Phone Repair

You are listening to music or a podcast through your Bluetooth headphones or speaker, and the audio stutters, skips, or cuts out for a fraction of a second before coming back. The interruptions may be random, happen at regular intervals, or occur only when you walk to certain spots. This is different from your Bluetooth device disconnecting entirely — the connection stays active, but the audio stream drops packets and you hear gaps, clicks, or brief silence. The cause is almost always signal interference, a codec mismatch, or a software issue on the phone.

Quick fixes to try first

1. Turn Bluetooth off and back on. Open Settings, Bluetooth, toggle it off, wait 5 seconds, toggle it back on. This resets the Bluetooth radio and re-establishes the connection with a fresh handshake
2. Restart the phone. A stuck Bluetooth process or a memory leak in the audio stack is the most common cause of sudden audio dropouts. Restarting clears both
3. Forget and re-pair the device. Go to Settings, Bluetooth, tap the info icon next to the device, and select Forget This Device (iPhone) or Unpair (Android). Then pair it again from scratch. This clears the cached connection profile, which can become corrupted after firmware updates on either device
4. Charge both devices. Low battery on either the phone or the Bluetooth device can cause the Bluetooth radio to reduce its transmission power to conserve energy, leading to weaker signals and more dropouts

Reduce interference

Bluetooth operates on the 2.4 GHz radio band, which is shared with WiFi, microwave ovens, baby monitors, wireless keyboards, and other Bluetooth devices. When too many devices compete for the same frequencies, packets get lost and audio skips:

• Move away from WiFi routers. A WiFi router transmitting on the 2.4 GHz band within a few feet of you is the single most common source of Bluetooth audio interference. If possible, switch your WiFi router to the 5 GHz band (which does not conflict with Bluetooth) or simply move further from the router
• Reduce the number of active Bluetooth connections. If your phone is connected to a smartwatch, fitness tracker, car system, and headphones simultaneously, the Bluetooth radio has to time-share between all of them. Disconnect devices you are not actively using
• Avoid physical obstructions. Bluetooth is a low-power radio signal. Your body absorbs a significant portion of it — if the phone is in your back pocket and the headphones are on your ears, the signal passes through your entire torso. Moving the phone to a front pocket or placing it on a desk with a clear line of sight to the headphones can eliminate dropouts
• Stay within range. Bluetooth 5.0 has a theoretical range of 800 feet in open air, but real-world range with walls, furniture, and interference is typically 30 to 50 feet. Audio quality degrades well before the connection drops completely

Change the Bluetooth audio codec

Bluetooth audio codecs determine how audio data is compressed and transmitted. Some codecs are more robust against interference than others, and a codec mismatch between what your phone sends and what your headphones expect can cause stuttering:

Android

1. Enable Developer Options: go to Settings, About Phone, tap Build Number 7 times
2. Go to Settings, System, Developer Options
3. Scroll to Bluetooth Audio Codec (while connected to your Bluetooth device)
4. Try switching between codecs. SBC is the universal fallback that every device supports and is the most stable. AAC is standard on iPhones and some Android devices. LDAC, aptX, and aptX HD are higher quality but more sensitive to interference
5. If you are using LDAC, try switching to SBC or AAC. LDAC transmits much more data and is more prone to stuttering in congested radio environments

iPhone

iPhones do not expose codec selection in settings. They use AAC by default with devices that support it and fall back to SBC. You cannot manually change the codec on iPhone. If audio cuts out on iPhone, the fixes are focused on interference reduction, device re-pairing, and software updates rather than codec changes.

Disable battery optimization for Bluetooth

Android's battery optimization features can throttle the Bluetooth service in the background, causing momentary pauses in audio streaming when the system decides to save power:

1. Go to Settings, Apps, find Bluetooth or Bluetooth MIDI Service (varies by manufacturer)
2. Tap Battery and select Unrestricted (or Don't optimize)
3. Also check the music app you are using (Spotify, YouTube Music, etc.) and set it to Unrestricted. If the music app gets throttled, the audio stream to Bluetooth pauses momentarily

On Samsung phones, also disable Adaptive Battery (Settings, Battery, Battery usage, Adaptive Battery) temporarily to test if it is causing the dropouts.

Check for app conflicts

Certain apps can interfere with Bluetooth audio:

• Multiple audio apps: If two apps both try to use the Bluetooth audio output simultaneously (for example, a navigation app and a music app), they compete for the audio stream and cause stuttering. Close any app you are not actively listening to
• WiFi scanning: Android periodically scans for WiFi networks even when WiFi is connected. Each scan briefly uses the 2.4 GHz radio (shared with Bluetooth) and can cause a tiny audio glitch. To reduce this: Settings, Location, WiFi scanning — turn off WiFi scanning. Or turn off WiFi entirely if you do not need it while listening
• High-bandwidth apps: Apps that use heavy data in the background (cloud syncing, video uploads, large downloads) can indirectly cause Bluetooth stuttering because the phone's processor is busy handling data, leaving less processing time for the Bluetooth audio stream

Update firmware

Both the phone's software and the Bluetooth device's firmware can contain bugs that cause audio dropouts:

• Phone: Check for system updates (Settings, System, Software Update). Bluetooth stack improvements are common in security patches and minor updates
• Headphones/speaker: Many modern Bluetooth headphones and speakers have companion apps (Sony Headphones Connect, Bose Music, Samsung Galaxy Wearable, JBL Headphones) that deliver firmware updates. Open the companion app and check for available updates

Bluetooth version mismatch

If your phone supports Bluetooth 5.0 or later but your headphones only support Bluetooth 4.0 or 4.1, the connection falls back to the older version's capabilities — slower data rates, shorter range, and less interference resistance. This is a hardware limitation. Upgrading to headphones with Bluetooth 5.0 or later provides a more stable audio connection, especially in environments with many competing wireless devices.

Reset network settings

If nothing else works, resetting network settings clears all Bluetooth pairings, saved WiFi networks, and cellular settings, giving the Bluetooth stack a completely fresh start:

• Android: Settings, System, Reset options, Reset Wi-Fi, mobile, and Bluetooth
• iPhone: Settings, General, Transfer or Reset iPhone, Reset, Reset Network Settings

After resetting, re-pair all your Bluetooth devices. You will also need to re-enter WiFi passwords.

Bluetooth audio help in Marion

If your Bluetooth audio keeps cutting out after trying these fixes, Marion Phone Repair can test your phone's Bluetooth radio, check for hardware issues with the antenna, and determine whether the problem is the phone, the headphones, or environmental interference.