Not to rain on everyone's parade but if for you AAC codec compatibilty is important (iPhone users), I need to warn you, that so far my QCC3020 equipped Bomaker Sifi, can't connect to any device with AAC but only SBC, On the other side APTX codec does work if forced on my Apple laptop. It's a shame because indeed in terms of sound they are very good while using them with superior APTX versus with SBC...
SBC codec always has a characteristic shrill high pitched overtone sound, when sub-bass sounds are produced. Usually you can hear this clearly with the test "Bass Shaker" over the Audiocheck Headphones Test webpage:
https://www.audiocheck.net/soundtests_headphones.php
If you want to confirm which codec you are using with your Qualcomm 3020 chipset equiped TWSs and if you have an Apple computer, you can press the Bluetooth icon on the top bar together with the Alt key and you get a more complete menu which describes which codec you are currently using with your device.
It's a pitty, but they will be returned to Amazon for false advertising on the AAC codec compatibility. At the same time I've checked the Qualcomm 3020 page and nowhere is to be found AAC compatibility. Amazing that every product equipped with the QCC 3020 (Bomaker Sifi, Mpow M5, Tronsmart Spunky Beats, etc...) they all tout AAC codec compatibility... Chi-fi at its best...