Locus maps recent update disables many maps from being downloaded. Be sure and not upgrade. Backup the app you have now. You may be able to find the apk for locus maps version that has the ability to d/l maps. I use locus and love it. Currently d/l maps for my camping trip this weekend. Great for spotty cell service. I also use c:Geo for offline use (to store cache data) and also upload caches to my Garmin etrex. For the find, I rely on my etrex. My phone is a dell streak and is a bit big, but works great.