UPDATE:This card stopped working as of late February 2013, after only about 2 months of regular use.  There are 492 similar complaints about this card (now 493...) and this is 17.5% of 1 star out of 2918 reviews...  At first I thought it was my phone not being able to find it, or the card would often spontaneously dismount, and there were the frequent and repeated alerts for me to format the card.  Formatting the card only cured the problem for a day or two...  Plugged it into the desktop directly, and the same thing happened.  Got another card of another brand, and everything has been working well since early March 2013 with the other card. So it was not the phone but the card that is at fault.  Very poor longevity. The price is right, but at the end not worth it if you need to buy another card to replace it.  Amazon only covers 30 days..., so consider this a very expensive 60 day experiment if you are willing to try this brand of card...  Would NOT recommend.