I have samshit galaxy s6 with android 9 note 8 port. This phone is my navi device only. Everything works good, all navi apk tt, sygic works perfectly but I couldn't understand why I can't use tt NDS. Normal TT GO any version ok, but NDS from 1.17.4 after clean instalation and first use, apk couldn't download any map. I tried many different NDS version, normal and moded. Today I instaled version 1.19.8.1 and first time after so many new version and so many attempts finaly it works. What is more I tried to solve it and read a lot to find any solution and most answers was that apk can't work without right OBB file. Now version 1.19.8.1 works perfectly without OBB file.