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Original topic:

Galaxy A7 bluetooth connection error after update HFP connection lost

(Topic created on: 03/03/20 11:54)
ViktorV
Apprentice
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Galaxy A Series

Hello, 

 

my Samsung Galaxy A7 (2018) bluetooth can not connect anymore or just for 10 seconds to my car ("HFP connection lost, Blutooth Audio connection lost") than dropps the connection again and again after the latest software update (A750FNXXU3BSKB). There was no any bluetooth connection issue with the previous version. Nor all of the listed trouble shooting steps nor finally the factory reset could not solve the problem.  Can anyone help, please?

78 REPLIES 78
ViktorV
Apprentice
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Galaxy A Series

Hello, last 3 update (dec, jan, febr) could not fix the issue, you can go back to 01.nov.2019 firmware, it is the last working firmware.

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wwe6785
Apprentice
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Galaxy A Series
How....?
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ViktorV
Apprentice
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Galaxy A Series

I wrote it in one of my previous post here.

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clalo12
Explorer
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Galaxy A Series

Boys and Girls

 

I have found a workaround to fix this temporarely , till Samsung releases a patch for fixing it.

Well , when Mobile phone is trying to connect to the car bluetooth device , that time do a call using the mobile phone.

When call established and you are talking to the one you have called , after 10 sec the connection will be established with the car audio system and then it will stay connected. But , as been said, the connection is valid  till the next time you will switch off the car and break the connection. So every time I get into the car , I do a fake phone call to a number and wait till the connection is established.  Try it 

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clalo12
Explorer
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Galaxy A Series

what is the procedure to downgrade firmware to previous version?

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ViktorV
Apprentice
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Galaxy A Series

You can find on page 2 in this topic.

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WAK25
Observer
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Galaxy A Series

Has there been any resolution to this? I have teh same problem and its not my car audio system and I took my car in and they replaced my whole unit.

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WAK25
Observer
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Galaxy A Series

I drive a RAV 4

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piechu83
Apprentice
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Galaxy A Series
i have noticed that when phone is connected via cable connection is more stable
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Elenasim
Apprentice
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Galaxy A Series

I think it relates to the smart lock of the screen, it seems that if the screen is active, Bluetooth connectivity is fine.

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