The link I posted, the dev has inserted address data into the map file for every state in the us plus some other countries. You download the obf file for each state you need. Then in android data subdirectory in your filemanager where osm puts its own map obf files you’ll replace there’s with these. You’ll have to either use a third party file manager app or a computer will work. If your maps are on the SD card, then it’ll be in the same directory but under the SD card.