When using FOL speakers (such as models FS-R317 and FS-L1306), you may occasionally encounter issues like "Bluetooth not connecting," "TWS pairing failure," or "no sound via Aux." Most of these are not hardware defects—simple troubleshooting can resolve them. This guide breaks down common connection problems into three categories, with clear "symptoms, causes, and step-by-step fixes" that even beginners can follow.
I. Bluetooth Connection Issues: Failed Pairing, Lag, or Disconnection
Bluetooth is the most common way to use FOL speakers. When problems occur, troubleshoot from three angles: "device compatibility," "signal interference," and "speaker status."
1. Symptom 1: Phone/Laptop Can’t Detect FOL Speaker’s Bluetooth Signal
- Possible Causes: Speaker not in pairing mode, Bluetooth disabled, excessive distance between devices, speaker already connected to another device
- Fix Steps:
① Ensure the speaker is in Bluetooth pairing mode: Press and hold the "Bluetooth button" on the speaker’s top for 3–5 seconds until the indicator light flashes rapidly (flashing colors vary by model—e.g., FS-R317 flashes blue, FS-L1306 alternates red and green). Only then will the speaker broadcast its Bluetooth signal.
② Check if Bluetooth is enabled on your phone/laptop: Turn it off and back on, then refresh the Bluetooth device list (on some Android phones, look for the speaker under "Available Devices" instead of "Paired Devices").
③ Reduce distance: Bring your device within 1 meter of the speaker, and avoid obstacles like walls or metal furniture between them.
④ Disconnect existing connections: If the speaker was previously paired with another device (e.g., a tablet), unpair it first before searching again.
2. Symptom 2: Bluetooth Connects but Lags, Disconnects, or Has No Sound
- Possible Causes: Signal interference (e.g., WiFi, other Bluetooth devices), low battery on the speaker/device, incompatible Bluetooth versions
- Fix Steps:
① Reduce interference: Turn off nearby WiFi routers (or switch to the 5GHz band to avoid conflicting with Bluetooth’s 2.4GHz band) and move away from microwaves or wireless headphones.
② Check battery levels: If the speaker’s battery is below 10% (indicator light flashes red slowly), charge it for 30 minutes before trying again. Low battery on your phone/laptop can also cause unstable signals—keep device battery above 20%.
③ Restart devices: Disconnect Bluetooth, turn off the speaker for 10 seconds, then power it back on. Restart Bluetooth on your phone/laptop at the same time.
④ Verify compatibility: Most FOL speakers support Bluetooth 5.0. If connecting to an older device (e.g., Bluetooth 4.0 or lower), version differences may cause lag. Test with a newer device if possible.
II. TWS Pairing Issues: Two FOL Speakers Won’t Connect to Each Other
The TWS feature (pairing two speakers for stereo sound) is a highlight of FOL speakers. Pairing failures usually stem from "incorrect operation order" or "abnormal status of one speaker."
1. Symptom 1: Two FOL Speakers Won’t Pair Automatically
- Possible Causes: Not following the TWS pairing process, one speaker already connected to a Bluetooth device, incompatible speaker models (must pair the same model—e.g., FS-R317 only pairs with FS-R317)
- Fix Steps (for identical FOL models):
① Enter TWS pairing mode: Press and hold the "Bluetooth button" on both speakers for 3 seconds simultaneously to enter pairing mode (indicator lights flash rapidly). The two speakers will automatically search for each other; once successful, the indicator lights will stay solid or flash slowly (e.g., FS-L1306 lights up green synchronously).
② Avoid pre-connecting to devices: TWS pairing requires the speakers to be "not connected to any Bluetooth device." If already paired with a phone, disconnect first.
③ Resolve abnormal status: If pairing still fails, turn off both speakers for 10 seconds, power them back on, and repeat Step ① to clear temporary connection glitches.
2. Symptom 2: TWS Paired but One Speaker Has No Sound or Lags
- Possible Causes: Speakers too far apart (over 10 meters), low battery on one speaker, signal blocked
- Fix Steps:
① Reduce distance: Place both speakers in the same space, within 5 meters of each other, and avoid blocking signals with walls or metal objects.
② Check battery levels: Ensure both speakers have at least 30% battery. If one is low, fully charge it before re-pairing.
③ Re-pair TWS: Disconnect TWS (press and hold the "Bluetooth button" on either speaker for 5 seconds), then repeat the pairing steps above to fix incomplete initial pairing.
III. Aux Connection Issues: No Sound or Distorted Sound After Plugging In
Aux wired connections are stable, but issues often arise from "cable problems," "loose ports," or "volume settings." Focus troubleshooting on "hardware contact" and "device settings."
1. Symptom 1: No Sound from Speaker After Plugging in Aux Cable
- Possible Causes: Damaged Aux cable, poor port contact, speaker not set to Aux mode, device muted
- Fix Steps:
① Set the speaker to Aux mode: Press the "Mode button" until the indicator light shows Aux mode (e.g., FS-R317 stays orange—check the manual for model-specific colors).
② Inspect the Aux cable and ports: Replace the cable with a known working 3.5mm Aux cable (preferably the original cable included with the speaker). Wipe dust or oxidation from the speaker’s Aux port and your device’s port with a cotton swab dipped in alcohol.
③ Check device settings: Ensure your phone/laptop is not muted, and turn the volume up to at least 30% (low device volume may make it seem like the speaker has no sound).
2. Symptom 2: Distorted or Noisy Sound via Aux
- Possible Causes: Low-quality (unshielded) Aux cable, excessive device volume, loose port
- Fix Steps:
① Use a shielded Aux cable: Unshielded cables are prone to interference. Use a metal-shielded Aux cable (e.g., the original cable) to reduce noise.
② Lower device volume: Set your phone/laptop volume to 50–70%, then adjust the speaker’s volume knob. This prevents signal overload from high device volume.
③ Secure the connection: Gently wiggle the Aux cable after plugging it in. If sound cuts in and out, the port may be loose—slightly twist the plug or adjust the port’s metal contacts with tweezers (use light force to avoid damage).
IV. Universal Troubleshooting Tips: For All Connection Issues
If the above steps don’t work, try these "universal fixes"—they resolve 90% of non-hardware issues:
- Restart the speaker: Turn off power, unplug the charger (if charging), wait 10 seconds, then power on again to clear temporary glitches.
- Factory reset: Press and hold the "Power button + Volume Up button" for 10 seconds (combination varies by model—check the manual) to restore factory settings. This erases all pairing history for a fresh start.
- Verify model compatibility: TWS requires identical models (e.g., FS-R317 can’t pair with FS-L1306). Ensure the Aux cable uses a standard 3.5mm port (devices like iPhones need a Lightning-to-3.5mm adapter—confirm the adapter works).
- Contact customer support: If issues persist (e.g., frequent connection failures, unresponsive ports), it may be a hardware defect (e.g., faulty Bluetooth module, loose Aux port). Contact FOL official support with your model number and purchase proof to request inspection or repair.
Conclusion: Start with Simple Troubleshooting Before Assuming Hardware Failure
80% of FOL speaker connection issues are caused by "incorrect operation" or "minor interference." Don’t rush to claim hardware damage—follow the logic of "Bluetooth checks pairing → TWS checks order → Aux checks cables" for step-by-step troubleshooting. For hardware issues, keep your purchase proof and use official channels for support to protect your rights.
Ready to Boost Your Business with FOL?
Looking to access our latest wholesale catalog, product specifications, or pricing tiers?
Our sales team is here to support you!
📩 Contact us today through our wholesale inquiry page:
👉 https://www.folntech.us/pages/contact
📲 Prefer a faster conversation? Message us directly on WhatsApp:
👉 +1 408-674-2907 or Click here to chat on WhatsApp
Let’s grow your business together with speakers that look great, sound better, and sell fast.