Android Question Osm Marker Offset issues

[PABLO2013]

Greetings
For some time use a sample of osm (SimpleLocationOverlay) in which a mark was taken using the central coordinates of the map. I currently use android6-lgstylus2...and... I can not make the mark match the center of the map (red cross) ... if any person can help me understand what could happen, all code is same of the original sample(osm tutorial), thanks

 

[PABLO2013]

I think my problem would be a screen issue or screen density or screen resolution ... since the code since it was used well has not changed since then ... thanks