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Hi,when you purchase a new micro SD card before use, youwill need to format the memory card so that you will be able to know the actual size of the Micro SD card by checking the details after formatting it.
After formatting the micro SD card and checking the details, if you still do not see the accurate size which is about 1.88mb or the about, that means the micro SD card you bought needs to be replaced. Not a good one.
The SDA announced the microSD format at CTIA Wireless 2005 on March 14, 2005, and approval of the final microSD specification was announced on July 13, 2005. At launch, the microSD format was available in capacities of 32, 64, and 128 MB. SanDisk introduced a 2 GB microSD card in July of 2006, initially priced at 99 USD. Since then, prices for flash memory devices have fallen dramatically. The same 2 GB card as of April 2009 can be found for as little as 12 USD at department stores, and as of May 2009 for as little as 6 USD at online electronics stores. At present date Jan 2010 a 16 GB micro SD card class 2 comes for about $40 and a 4 GB class 2 micro SD card comes for about $8. please rate my answer as helpful. thanks. Joe
The original Blackjack will not recognize anything larger than 2gb. Sorry, but you just wasted buying those 4 gb. cards. I found this out the hard way too when I bought my daughter a 4gb card for her Blackjack. I have a BJ2 which will recognize the 4gb cards.
THe MicroSD card slot which can handle cards up to 32GB to satisfy your thirst for videos/music/photos/applications. MicroSD cards are now pretty cheap, I saw an 8GB card recently for $18.
If it is a 4GB micro SD card it won't work, a nokia 6300 doesn't accept HC (high Capacity) micro SD cards. Maximum you can use is a 2 GB micro SD card.
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