@HansWurstSenior Thank you for compiling all the problems in a message.
I will answer each point.
0) On the accuracy of the GPS I could not do more tests moving away from where it usually is and usually fails. When possible I will put more information on that problem. Who should fix the problem if it only occurs in my area?
1) On the proximity sensor there was a subject that I had not found when I put my message, it is this:
https://zentalk.asus.com/en/discussion/7473/asus-calling-screen-annoy-screen/p12) It seems to have improved with subsequent updates, but there is no official confirmation that developers have addressed the problem. On other issues, for example, a solution to speaker problems was confirmed.
3) The problem with the Italian language is that I have reset my phone factory more times than all my previous phones together, in almost every update. In addition to almost all ZenTalk issues, a factory reset is recommended as a possible solution, so it is something that is used a lot, and is not difficult to develop, all other brands have it as requested.
4) Indeed, points 4 and 13 are related. In Zenfone 5z (and in any phone with front camera), there is the option to keep the screen on intelligently, in addition to taking into account the time to turn it off, it is taken into account if the user is looking at the screen so that it is not turn off if you don't touch it for the set time. As a solution it occurred to me that since the phone cannot see the user's face while reading the screen, if it can detect a finger placed on the reader (it is not necessary to recognize the fingerprint). In this way the sleep timer would not start if you did not touch the screen, being very useful for certain circumstances.
5) It seems that randomly, in that update. After having ordered the applications, some changed places after the restart. I don't know if the developers have checked it, because it only happened during the first reboots and randomly.
6) Before the update, at that time I put the message, you had to increase the volume to get the same volume level as before updating. For example, before with 25% it was heard the same as now with 40%. (The percentages are only to explain what happened, they are not literal).
7) It still happens after the last update 110.
😎 In Zenfone 5z with Android 9 (now with Android 10 it no longer appears), and I don't remember if also in 6 with Android 9, the remaining time is shown at the bottom of the lock screen. It is the same information as if we enter the battery section, where the approximate time until charging is complete.
9) That option found that it works correctly when the high-precision GPS option is active, and should work even with simple GPS. In addition, it would be nice to be able to associate this function with the night light or the dark background option.
10) It seems that this problem has been resolved in update 110, but has not been officially confirmed. I will continue testing to confirm that it has been fixed.
11) It is related to point 1. I do not use any screen protector, and the case is the one that came with the phone. It is all explained in the link in point 1.
12) For the background to be white I must use a specific application, with other applications without a white background, the location icon is correctly displayed in white, but I have not found it to be shown in black in any application.
13) It is in point 4.
I especially want to thank you for your response and your valuable time you have spent responding.