I’ve tried to put 2 values “credentials_enable_service”, false and “profile.password_manager_enabled”, false; on User set preference but It’s not worked.
that sheet is not the save password prompt, it is chrome’s leaked credential check (safety check). it fires when the password you type is in google’s breach list, which test passwords usually are. the two prefs you tried only turn off the password manager, they do not touch leak detection, and on android chrome prefs set through chromeOptions mostly do not apply anyway.
what works on android is a feature flag. in your mobile desired capabilities add a chromeOptions dictionary with args:
chromeOptions Dictionary
args List --disable-features=PasswordLeakDetection,PasswordCheck
flags do get passed to chrome on the device through chromedriver. if you also want the save prompt gone add --disable-save-password-bubble.
and if you cannot get the caps through, the quick hack is to use a password that is not in any breach list, a random 20 character one, the sheet only shows for known leaked ones.