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I've got a new Bluedio T2s headset. I use Xiaomi Redmi Note 3 Pro mobile phone. When connecting the bluetooth device, it's showing 'Connected (No Phone)' on my mobile phone. I can still listen to music, but can't make calls or receive and headset battery level is also not showing.

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It appears to be a pair of headphone, not headset. In other word, it doesn't have a microphone builtin.

Hence the product probably isn't supposed to be used for communication, as in, it doesn't support HFP/HSP in Bluetooth but only A2DP.

As far as I know, Android does not have audio route written for outputting "voice" to A2DP-only device.

EDIT: You may also see if the settings of the paired item has a Call/Phone Audio checkbox in addition to a Media Audio one. If it does and the box is "checkable" (i.e. not greyed out), then you should be able to use it for communication by "checking" the box. After that (No Phone) should be gone.

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  • Thanks for your solution. I checked the product description again and it's saying that it has a microphone for receiving and making calls. – Munaf Arnob Sep 23 '17 at 19:13
  • I checked the product description again and it has a builtin microphone. My bluetooth settings looks like this: tinypic.com/r/np4ajk/9 – Munaf Arnob Sep 23 '17 at 19:22
  • @MunafArnob Does toggling the Phone audio switch back and forth helps? Sounds like a compatibility defect in either the system of the phone or the headset. – Tom Yan Sep 24 '17 at 13:34

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