Downloading APKs from non-official sources, such as unauthorized "Friend Mapper" apps (e.g., this SourceForge project ), can infect your device with malware.
There is no official Android application. Some third-party sites like Facebook Friends Mapper Download For Android
Before you download anything, ask yourself why you want a Facebook Friends Mapper. If the answer is “I want to see where my friends hang out without telling them,” you are venturing into stalking territory. Downloading APKs from non-official sources
How to use it:
Export a copy of your Facebook information | Facebook Help Center this SourceForge project )