What is the lifespan of a microSD card?

[venom0706]

I am wondering, how long can you keep a microSD card in your phone and use it, before it becomes faulty?

 

[Rukbat]

I have some 32MB (not GB) drives (the same technology as cards) that still work, and a 256MB card that I use frequently. That's at least 12-15 years. Since SanDisk warranties their cards for 5 years, and their Ultra cards for your lifetime, I don't think you have to worry, as long as you buy a good card. "Cheap John's" cards may not last 2 months. (That's assuming normal use, not something going wrong in the phone that damages the card. In that case, the card stops working as soon as it's damaged.)