I have been having the same problem with my Galaxy J3 Mission. My phone calls have been crystal clear inside my house for 3 years. A few weeks ago calls started to become garbled intermittently. Occasionally the other caller drops on my end, but the person on the other end says they could hear me (I could not hear them). It doesn't seem to matter where I am in the house. My text messages are fine, although I sometimes receive duplicates. I have not dropped or damaged my phone. Zip 33461
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