I found a solution. There is a free contacts editor app at googles playstore, which provides separate fields for street, city etc. https://play.google.com/store/apps/details?id=org.dmfs.android.contacts https://dmfs.org/editor/?getit It integrates itself into the aosp contacts app only for editing of contacts. I downloaded the apk from playstore with the webdownloader at evozi.com https://apps.evozi.com/apk-downloader/