Hi Tan,
You may want to consider upgrading your SMART Mobile version. The current version is 478. It’s likely the update will help with your problem. You can access this on he Google Play Store.
Regarding your offline map the following layer formats are supported:
- ESRI formats: shapefile (shp), tile package (tpk), vector tiles package (vtpk)
- ASRP/USRP
- CIB1, 5, 10
- DTED0, 1, 2
- GeoTIFF
- HFA
- HRE
- IMG
- JPEG
- JPEG 2000
- NITF
- PNG
- RPF
- SRTM1, 2
- Mosaic Dataset in SQLite (read-only)
- MapBox: mbtiles
- Google: KML
- GeoJSON
Please see this post here regarding the use of mbtiles.
Cheers,
Alex