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Microphone cutting out

I’ve got a problem with the microphone cutting out half way through the call.
It’s happened a dozen times now. Does anyone else have this problem? or preferably a fix even?

Hello Peerke and welcome to the forum!

Would you by any chance have obstructed the side microphone on the left of the phone with your finger while in speaker mode?

If yes, the issue was already discussed here:

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If Antoine’s suggestion doesn’t solve it, you can test the general functionality of your FP4 hardware with a range of tests that become available when you dial this string:

* # * # 2 8 8 6 # * # *

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