HTC issue

I have a HTC one phone from T-mobile that after talking for a minute or so becomes muffled/garbled or sounds like I am speaking through a speaker to the person I'm talking to. I have had two replacement phones with the same issue. The last thing I was told by tmoblile is that it might be a network issue. Anyone else with the same issue or a solution?

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The usual

Is there more than a few bars showing?

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Yes. Works fine for just a few minutes.

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Sounds like the network to me

Three consecutive phones with the same problem sounds lke a network issue to me. Very common, unfortunately.

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earspeaker issue

i think the ear speaker is broken, replace it and see if it works better

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Do you mean....

....there is more than one kind of speaker ?? Confused

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