Jun 06, 2015

How to see what I typed as my WiFi password to connect me to WiFi on my z370?

More information about your model would be helpful in trying to answer this question. But see dniblock's answer for now.
I'm not familiar with the Z390 or which version of Android it is running. However, it seems that you need to be rooted to do it.

From an earlier answer:

"Unless you are rooted, I don't know of any way to do it. If you are rooted, or are willing to root your Galaxy for those nice guy points, you should be able to use a file manager (ASTRO, Root Browser, etc.) to find it.

Use the file manager to locate your data/misc/file folder, then look for wpa_supplicant.conf, or I assume it could be wep_supplicant.conf if her network is using WEP instead of WPA. Open the .conf file using a text editor (which is probably built into your file manager application, if not, add that to your shopping list)."
Answer this