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AT&T, however, says its early trials show that these problems can be overcome, at least in certain conditions. In South Bend, Indiana, AT&T set up a 5G trial for small business and residential customers. The trial "Successfully provided gigabit wireless speeds on mmWave spectrum in both line-of-sight and some non-line-of-sight conditions," AT&T said in an announcement yesterday. That qualifier—"some non-line-of-sight conditions"—suggests that AT&T has been able to overcome the physical limitations of millimeter wave spectrum in only limited circumstances. AT&T didn't say what circumstances produced the positive result—we've asked the company for more details and will update this post if we get answers. AT&T had other good news to report. In a trial involving small businesses in Kalamazoo, Michigan, AT&T "Observed no impacts on 5G mmWave signal performance due to rain, snow, or other weather events." AT&T sa...