I called Sandisk and they told me they were only going to produce class 2 32gb microSD cards, at this time. The person I spoke to stated that they would evaluate the market demand in the future to see about offering the 32gb microSD card in a faster class. But, no, they are NOT making a faster one at this time. He also stated to watch the Sandisk website for updates.
BTW, Samsung is ALSO working on the 32gb microSD card. They announced it back in January. Once it is available then the Sandisk ones may drop enough in price for me to pick one up.
The reason for a class 6 card on the Evo is HD Video recording. Video is choppy on my stock class 2 8gb microsd card that came with the device, because it cant handle the bitrate the hd video is writing to it. bought a 16 gb class 6 off of new egg (transcend) for 62 bucks and it is smooth as silk now.
I asked this question myself with HTC and got a very quick response. My main concern was whether the phone would work with a higher class so I asked which classes of card it supports (2/4/6/10). I have pasted their reply below.
In my opinion, class 6/10 are only really required if you're shooting high speed SLR or high definition video at 60+ frames per second. Since the bit rate of the cameras on the Evo is so low, a class 4 would probably be fine. The only other time you'll notice a difference is if you're loading the thing up to capacity with music or whatever. The playback experience on the device will be the same with a class2 vs class 10, the difference would be how long you'd be twiddling your fingers waiting while you load the card. For my money, class 4 is a decent compromise for this application, so their recommendation sounds reasonable to me.
Edit: I just read the last post and I suppose I stand corrected. Perhaps the bit rate is high enough to make a difference. I'm curious to hear more from folks that have successfully used a class 6/10 including the make & model of card you used, how long you've been using it, and crashes/instability, etc..
<<< Email from HTC representative follows >>>
Dear [name removed],
I understand you want to know which speed is the best for your device as far as SD card is concerned. We have tested the devices on a class 4 speed. I could not recommend anything higher than that. The phone may be capable of running a higher-class speed, but we have only tested it on a class 4.
To send a reply to this message or let me know I have successfully answered your question log in to our ContactUs site using your email address and your ticket number [removed].
Message was edited by: Trogdor
Message was edited by: Trogdor
I purchased a 32GB Sandisk Class 2 and it does NOT work well with my EVO. It keep getting SD card errors. It does mount and it does work but has regular intermittent problem to where it is not usable. Not sure if it is a problem with this particular disk or not. I put the original 8GB card back in and everything works again.
You should get better performance on your class 2 card than that. Test it on your PC with this tool. Are you sure it is genuine? There are a lot of fakes on the market.
When I got my Hero, I replaced the 2gb Class 2 with a Trancend 8gb class 6. Worked fine. I moved that over to the EVO in leiu of the Class 2 that came stock.
I'm sure both would have worked fine. I'm not having any problems with my c6.
I tried 3 different 32gb class 2* cards and got the same results, LOTS OF DATA CORRUPTION. Called HTC and they said in there tests that the HTC EVO didn't support 32gb SDHC card and they also had corruption.
Today I plan to try a 16gb class 4 and see how that works.
So far the class 4 16gb card is working fine, have not tried to add a lot of files (that's where the 32gb stats corrupting files)
* 2 Kingston and one Sandisk.
Message was edited by: 0cdonjenkins
Are these authentic 32gb cards you are using? Maybe that is why they are not working. Where did you get them? Kingston does not even list a 32gb card on their site.
They came from a Honk Kong Ebay seller, that sells genuine Kingston China 32gb class 2 for about $35. I've been spending most of the
afternoon trying to find out if things are real. My tests will finish in three hours and I should know if there's any thing wrong with the media.
But as I said before HTC told me on the phone that EVO's don't seems to support 32GB cards. My 16GB class 4 is working fine by the way.
Just because it looks authentic or has 32gb of memory does not make it authentic. There are a ton of articles out there on fake memory from sandisk and kingston. Most report the cards either have no where near the memory or they have the memory but the cards go bad in a short time, or do not work with most devices. Most knock offs look identical and are out of hong kong. And there are a ton of sellers that sell through amazon. This does not make them real as well. I do not see any kingston on their official website that lists 32gb micro sd cards.
So is sprint wrong on listing the evo compatible with 32gb? Anyone else have experience with this? The sandisk 32gb card was tested at over 4gb writing on a few sites, so the class 2 is a low rating for sandisk.
Message was edited by: bouda5