[reintzell]

Just about once a day my blackberry will read invalid sim card and I have to turn the power of and back on so that it will work. I have t-mobile and the 8700g. Anyone had this problem?

[Lex Luthor]

Try removing your sim card from the BlackBerry and clean it very lightly with a piece of dry cloth or better yet micro fibre. Try cleaning the contacts also on the BlackBerry maybe that will help. I had that error on my BlackBerry once and after I wiped it down it I never had that issue again.

[Gmouth]

You can also use an eraser head from a pencil.

[Lex Luthor]

Originally Posted by Gmouth

You can also use an eraser head from a pencil.

Cool tip! I'll have to try that next time.

[earth]

if its an 8700r could just be crap design. if I drop my bberry or jostle it a bit the sim can become loose and I have to reseat it.