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Here is an iPhone 6S Plus with a speaker problem, the iPhone 6SP speaker doesn't work; there is no sound when you play music or receive a call. Go to Settings, Sounds&Haptics to test it, turn the volume up to the maximum, and it doesn't have a sound. We need to fix this problem.
First we need to confirm if it's caused by an external configuration, such as the iPhone speaker and iPhone tail plug flex cable.
