Question: is all aptx low latency?
Answer: No. AptX is at least 3 codecs, only two are related, original AptX, low latency AptX, and AptX HD. ... 4.2 and 5.0 generation devices are almost certainly to have low latency support, most 4.0 and 4.1 do (except suspiciously low budget Chinese clones that I suspect use fake Qualcomm chips), 3.