So I tried this 3.0.6 version in Maven, but kept seeing this error when running my app:
01-29 18:54:51.057 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: heapsize Dalvik_dalvik_system_VMRuntime_nativeMinimumHeapSize 0
01-29 18:54:51.057 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: heapsize Dalvik_dalvik_system_VMRuntime_nativeMinimumHeapSize 12639952
01-29 18:55:00.316 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: Could not find class 'com.backendless.geo.GeoPoint', referenced from method com.backendless.FootprintsManager$Inner.duplicateFootprintForObject
01-29 18:55:00.316 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: Could not find class 'com.backendless.BackendlessCollection', referenced from method com.backendless.FootprintsManager$Inner.putEntityFootprintToCache
01-29 18:55:00.326 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: Could not find class 'com.backendless.geo.GeoPoint', referenced from method com.backendless.FootprintsManager$Inner.updateFootprintForObject
01-29 18:55:00.407 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: Could not find class 'com.backendless.BackendlessCollection', referenced from method com.backendless.Persistence.<init>
01-29 18:55:00.407 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: Could not find class 'com.backendless.BackendlessCollection', referenced from method com.backendless.Persistence.callStoredProcedure
01-29 18:55:00.417 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: Could not find class 'com.backendless.BackendlessCollection', referenced from method com.backendless.Persistence.find
01-29 18:55:00.417 22458-22458/com.ugommirikwe.photogenic E/dalvikvm: Could not find class 'com.backendless.BackendlessCollection', referenced from method com.backendless.Persistence.getView
01-29 18:55:02.248 22458-22458/com.ugommirikwe.photogenic E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.ugommirikwe.photogenic, PID: 22458
java.lang.NoClassDefFoundError: com.backendless.BackendlessCollection
at com.backendless.Persistence.<init>(Persistence.java:72)
at com.backendless.Persistence.<clinit>(Persistence.java:62)
at com.backendless.Backendless.<clinit>(Backendless.java:43)
This is without any change in my code that ran without errors when using the Backendless SDK on Github.