Dear Customer, Hello there! Thank you for your review on our Voyager 5200 headset, however, we are sorry to hear about your experience. If your headset continuously disconnects from your mobile, you may want to try resetting the Bluetooth connection with your mobile. To do so: 1. Unpair the headset from your mobile phone by accessing your Bluetooth settings. 2. Power off your mobile phone for 2 minutes and turn it back on. 3. Re-pair the headset by pressing and holding down the call control button until you see the LED flashing red and blue. 4. Access to your Bluetooth settings and select "PLT_V5200". Once successfully paired, you will hear "pairing successful" and the LED on your headset will stop flashing red and blue. You may also want to disable the smart sensors of the headset. If they are not calibrated or working as expected, you could encounter these type of issues. In an idle state (not in a call or listening to audio), simultaneously press and hold the call and mute buttons for 5 seconds and a voice prompt will inform you of smart sensors status. Last but not least we recommend testing the headset with a different mobile to see where the issue is coming from. If for some reason the issue remains, then it means the headset might have an actual problem and it will be best to replace it. Remember this unit counts with 2-years of warranty from date of purchase and you can request a replacement directly through our official website. For replacement instructions go to the following links: https://www.plantronics.com/us/en/support/knowledge-base/kb-article-page?type=Documentation__kav&lang=en_US&urlName=KB23691&t=All&k=pdw If you need any further assistance, please let us know. Kind Regards, Poly Customer Care