i m using the default 8gb sd, and seems to work fine (copyng, reading videos, pics, music, large files) with no problems, and i also check with "flash format" program, and seems not corrupted.
anyway when i install programs on sd (i tryed many, google maps, some resco`s sw, and many others). first time they work fine, then after some times i run the programs (usually 5-6, sometimes the second time), device hangs on loading for 5+ minuts, then it runs as nothing were launched, and with no errors (and sometimes device turn off).
if i install the same program on the device rom, all works fine and flawless, if i reinstall on sd, it works first time, then maybe after some suspend, it hangs again for minuts.
i dont know what my problem could be, i need tips on what to check.
this issue appers just after i bought the phone, (i didnt try wm 6.1, so i donw know if its a 6.5 issue)
working with files, video (also large videos 500+mb) is ok, no problems, no hangs up.