General discussion

MicroSD Card life expectancy?

I am wondering if there have been studies that show how often one should expect to replace the microSD card in one's phone or other electronic gadget (GPS, camera, tablet, whatever).

I know lots of people have their particular "behaviors" they think might/must improve the life of the chip - but any facts from specialists who have studied the topic?

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its based on usage

there is no true life expectancy on a microsd card. It all depends how often it is used. Most will be damaged long before the read/write cycle wears them out. You can find all sorts of info about this with a simple online search.

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Re: why not just search?

Googling drops one into a sea of opinions without much background provided. I expected that if CNET had not performed such studies they at least might have come across experts in the field to whom one might be pointed.

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I'm an electronics designer.

That has used EEPROM, flash and a majority of memory devices in embedded computers over the years.

I might be the expert here. Read my reply below but keep in mind I want to stay at a higher level without diving into MTBF and such.

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I'm using MicroSD cards in car cameras.

And I think with 6 car cams I replaced one card. The card was smallish so it get used over and over a lot. By moving from 2GB to 32GB that's going to extend the lifespan on paper by 16 times. So the 1 year I got from a 2GB card should mean about 16 years on the 32GB.

Car cams continuously write to the card so that eats away at it's write cycle life span. For a phone there's not so much writing and then what if you installed a DVR type app? Well it could drive the life span down.

-> This all depends on use and environment. The car cam takes it to the extreme with heat, cold and constant writing. It's the only device where I wore out cards.

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The only real answer is that they usually work as long as you have them, but sometimes they fail unpredictably. And I haven't noticed any different behavior between cheap ones and expensive ones.

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