Hello. i'm a newbie here. I'm driving a 2015 Toyota vios 1.3 E. It comes with a touchscreen head unit na may manual of course. my question is, how can I make the most of this touchscreen headunit. I use it primarily to connect my phone through Bluetooth, for making/receiving calls and listening to music in my phone. The manual shows how you can connect your phone (both android and iPhone) however, the information are very limited and if you go to their website, it tells you to use an A/V adaptor and HDMI cable (for iPhone) but it didn't say what I should expect to see. can I see all apps there, such as if i'm using waze? I haven't bought apple A/V adaptor and HDMI cable, baka masayang lang din kasi kung ang functionalities lang na makukuha ko eh same as connecting through Bluetooth. problema lang sa Bluetooth, nawawala connection, sometimes, I cannot make or receive a call at a time that I need it most.
I hope somebody can help me how i can maximize the functions and features of the said touchscreen headunit.
appreciate your help. Thank you in advance!

P.S.
The updated iOS has new feature, which is Carplay, although it doesn't connect, so no use for now.
thanks again.