Had the displeasure of working with them a few years ago. They had this support portal and oh f--- was it agony. You kinda gave up using it after months of learning the Qualcomm engineers replies would be :
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slow, muddled and barely make sense
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conflicted with published documents
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defied well known principales
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refer to documents we could'nt access
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repeatedly say "will get back to you on that"...........for days and days
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was demonstrably incorrect
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had so many caveat as to be utterly useless
It was a NIGHTMARE dealing with them. NEVER AGAIN.