I have two galaxy s9 about year and half old. One of them is not used very much (works as a home phone) but it works well. The second one, my phone, keeps dropping calls and frequently do not complete the calls. First I thought it was t-mobile. But it does no happen with the other phone. I also tried using only with wifi while I am home. But the problem persists. I have done a factory reset and nothing. Any other thing I should try?
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