1. The distance between the Bluetooth headset and the mobile phone may be too long;
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2, or obstructions will affect the Bluetooth signal, resulting in sometimes no, signal strength and Bluetooth headset quality is related;
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3, may be the version of the problem, it is recommended to update the version;
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4, there may be a problem with the mobile phone, it is recommended to go to the local after-sales repair.
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Bluetooth? : is a wireless technology standard that enables short-range data exchange between fixed devices, mobile devices and building personal domain networks (using UHF radio waves in the ISM band of 2.4-2.485 GHz).