Develop Bugs

Reliable 16gb MicroSDHC Class 6?

I have spent the last week looking for a good 16gb class 6 card, but so far everything I find has reviews of them being slow or dying fairly quickly.
Is anything over class 2 just unreliable? Is there any company that makes a decent 16gb class 6?
What are your experiences? Any recommendations?
Any help would be much appreciated.

I've had my SanDisk for about a year and a half with no issue. It's not ridiculously fast or anything but has been reliable.
Sent from my HTC SUPERSONIC

I know its not a speed 6, and i will probably get attacked, but i just bought a speed 2 16gb sandisk for 28$ free two day shipping off of amazon..

http://www.newegg.com/Product/Product.aspx?Item=N82E16820208475
works well for me

picked up a Kingston 16gb class 4 from Buy.com about a month ago for $32
been running fine including movies and pics
Mule

[email protected] said:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820208475
works well for me
Click to expand...
Click to collapse
I have the same one. It's fast enough, but I've only had it a week, so I can't attest to it's long-term reliability yet,
It partitioned just fine and is working perfectly with Fresh and Darktremor Apps2sd.

[email protected] said:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820208475
works well for me
Click to expand...
Click to collapse
Noxious Ninja said:
I have the same one. It's fast enough, but I've only had it a week, so I can't attest to it's long-term reliability yet,
It partitioned just fine and is working perfectly with Fresh and Darktremor Apps2sd.
Click to expand...
Click to collapse
I've had mine since late June and I have had no problems with it. *knocks on wood*

Thanks Everyone!
I think I'm going to try the Transcend or maybe a Sandisk Mobile Ultra if i can find a good price.

If there's ever a chance you'd want to do apps2sd or apps2ext (on the sdcard) then Kingston is a BIG fail. More times than not it gives issues. I've experienced this first hand and if you Google around for a while you'll see lots of android issues with Kingston's (which I did after running into speed issues with apps2ext).

SpaceMonkey.....
the problem is the very nature of the beast. a MicroSDHC card, at this point in time is just not capable, for the most part, of what we call Class 6 speeds.
I personally have not tried the Sandisk 16gb C6 card but i use their SD and CF cards in my canon dSLR's and though you pay a premium you get what you paid for. if you can handle the $60 bucks for one grab the one from Newegg.
i highly highly doubt you will see C6 speeds, the technology of C6 mSDHC just isnt there, but i would wager it is faster than all the others. and more reliable.
Sent from my PC36100 using XDA App

do all brands have to conform to the class 6 standards?? b/c topram class 6 cards (16gb) are ridiculously inexpensive...just check out amazon or elsewhere.

patriot class 10 32GB microsdhc announced

Patriot has released a Class 10 32GB micro SDHC card.
Newegg is out of stock but has the price as $99.99.
Just thought y'all might want to know.
Edit: Newegg sez its availability will be 1/8/2011

Do our phones support 32GB microSDs? I read somewhere that 32GB didn't work with our Vibrants which was really ****ty but...was what it was.
Can someone either confirm this or deny it? Specifically, do so by testing with a specific 32GB card...

}{Alienz}{ said:
Do our phones support 32GB microSDs? I read somewhere that 32GB didn't work with our Vibrants which was really ****ty but...was what it was.
Can someone either confirm this or deny it? Specifically, do so by testing with a specific 32GB card...
Click to expand...
Click to collapse
I've had a 32 GB microSD in mine for months - works fine!
I listen to music (I have approx 20 gigs of music stored on it) and store the pix I take with the camera on it - haven't had any problems.

remarquian said:
Patriot has released a Class 10 32GB micro SDHC card.
Newegg is out of stock but has the price as $99.99.
Just thought y'all might want to know.
Click to expand...
Click to collapse
dude this is amazing i will watch that item like a hawk untill it is in my phone and oh yes it will be mine class 10 all the way

Can our phones support class 10, I know it will work but is there speed benefits.
Sent from my SGH-T959 using XDA App

warwolfx0 said:
Can our phones support class 10, I know it will work but is there speed benefits.
Click to expand...
Click to collapse
The benefit would probably be in it being able to keep up with HD video recording, and decreased time scanning the microsdhc card when booting up, or mounting or unmounting it.

Yet, the bigger the card and more data would slow down the scanning. Double edge sword.

kizer said:
Yet, the bigger the card and more data would slow down the scanning. Double edge sword.
Click to expand...
Click to collapse
Maybe. I depends on how many files it has to catalog. I imagine that a 32GB microsd with 10 2.3GB movies would scan much faster than a 8GB card filled with mp3s

Have you noticed that the card makers are going away from what the Class system is supposed to be. Look at the transfer rates of the Class 4 cards now and they are equal or better than some of the class 10 cards. Doesn't make sense to me, but maybe people didn't understand the Class system and its relationship to transfer rates.

So the Class system is supposed to specify a minimum transfer rate, which increases as the Class goes up.
However, it seems that it is applied arbitrarily by different manufacturers.
Check SD card wiki for more information.

Newegg says they are available
Newegg just notified me that the Patriot 32Gb class 10 micro SDHC is now available. Now it is $99.99.

Newegg also has a Wintec Class 10 32GB for 82.49 - it isn't by Patriot, but it comes with a lifetime warranty.

I have a Wintec 16 gig class 10 in my Vibrant.
Works very well, very snappy performance.
I've never figured out a way to test it in the phone, but thru a adapter on my laptop it hovers around 17-18 meg thruput both read and write.
(edit) BTW, I got it at Frys.
It was 38.99$
Nice price.

Patriot LX 32GB Class 10 benchmarked with SD Tools v1.3
(HTC Desire HD + Android v2.2 rooted)
Oh, by the way, about the SD Class system, it only rate the minimum sustained write speed of the card, but not for random writes.

Wow. That's pretty awful if the benchmark is to be believed.

i have a scandisk class 4 32gb , it has a write speed of 4.8 and a read 11.4

Semi-related, I have a patriot 8gb class 10 card that is holding up very well, including quick transfers. Patriot seems to be pretty good stuff, so I'm considering getting a 16 and passing the 8 down to my girlfriend. I don't think I could find a need for 48GB on the phone, except to hold backups for reflashing.

Maximum size sd card with g2

Bought a 32 gb micro class 10 today and its acting really weird. Still have my 16gb and it works perfect.
Running stock 2.2 still, is 16gb max or what? If yes and I upgrade to 2.3 legit upgrade will it work with a 32 gb?
Sent from my T-Mobile G2 using XDA App

No, it's the class 10. Lot's of threads on this, try a class 6 card.

Class 10 is not so good on desire z. Try a class 4 or 6 card
Sent from my HTC Vision using XDA App

Ok so... I bought another one with a class 4.
Class 10 no name: everything works normal but transfer is super super super slow...
Class 4 kingston: weird when I open my computer and turn on the usb connection the H drive (sd card) keeps showing up and disappearing then showing up and disappearing over and over... wtf gives?
Sent from my T-Mobile G2 using XDA App

ok so im throwing both the sd cards in the reader and formatting them. see if that fixes my problem.

if you still got the packaging and recipt you can still return the cards if they dont work

I'm running a 32GB Class 10 card with no problems. Maybe it's just your card. I had problems with the partitions on my original Wintec card and the company sent me a new one as a replacement.

blackknightavalon said:
I'm running a 32GB Class 10 card with no problems. Maybe it's just your card. I had problems with the partitions on my original Wintec card and the company sent me a new one as a replacement.
Click to expand...
Click to collapse
Ya, thats the one. Finished formatting and copying files to the cards. The Wintec one which is class 10 is running a little bit weird. I'm try the kingston class 4

evilcuber said:
Class 10 is not so good on desire z. Try a class 4 or 6 card
Click to expand...
Click to collapse
I have 16GB Class 10 Joyflash (noname). Could you tell, why Class 10 "is not so good on desire z", becouse I dont understand this.
If card reader of desire is slow, on level of Class 6, if you put Class 10, doesnt change anything, but why "is not so good"?

I can safely say that my 32 GB class 6 has no issues. I've been reading on the subject and for some devices the class 10 is flaky... might just be a firware/software issue. Who knows.
But I'm ok with my class 6. Write: 9mb/s and read 24.3m/s

Ok so after everything last night I ended up keeping the kingston class 4 instead of the wintec class 10.
One thing that everyone should know if they are planning to upgrade soon and have forgotten this. The speed to write to a micro sd is slow then the speed to copy from a micro sd. This is my experience last night at least... I can copy a certain file to my desktop in 40 seconds but to put it on took 2-3 minutes.
Anyways, just be patient and go to a place you can get refunds so you dont get screwed with a bad card lol. With my experience the 32 gb class 10 wintec sucks, the write speed was insanely slow. So I stuck with a name brand instead, I really wanted a sandisk but they werent available.

Mog said:
Ya, thats the one. Finished formatting and copying files to the cards. The Wintec one which is class 10 is running a little bit weird. I'm try the kingston class 4
Click to expand...
Click to collapse
Actually, my original Wintec card was screwing up and wouldn't keep the data partitions written. The replacement I got from Wintec is working the way it should, and it actually is acting like a class 10 card.

Mog said:
One thing that everyone should know if they are planning to upgrade soon and have forgotten this. The speed to write to a micro sd is slow then the speed to copy from a micro sd. This is my experience last night at least... I can copy a certain file to my desktop in 40 seconds but to put it on took 2-3 minutes.
Click to expand...
Click to collapse
Class ratings refer only to write speed. And write speed is always going to be slower than read speed.

redpoint73 said:
Class ratings refer only to write speed. And write speed is always going to be slower than read speed.
Click to expand...
Click to collapse
This AND, class ratings were documented before smartphones for the purpose of professional photography use in cameras. I have never had any speed issue with my good old class 2 card in my smartphone.

iDAREK said:
I have 16GB Class 10 Joyflash (noname). Could you tell, why Class 10 "is not so good on desire z", becouse I dont understand this.
If card reader of desire is slow, on level of Class 6, if you put Class 10, doesnt change anything, but why "is not so good"?
Click to expand...
Click to collapse
Lots of threads on this, search "sd card"
http://forum.xda-developers.com/showthread.php?t=804421&highlight=sd+card
http://forum.xda-developers.com/showthread.php?t=849494&highlight=sd+card
Also, check this out...
http://forum.xda-developers.com/showthread.php?t=1022678&highlight=sd+card

SuperDave81 said:
No, it's the class 10. Lot's of threads on this, try a class 6 card.
Click to expand...
Click to collapse
Thank You: I can confirm this.
I had to put a SD in my old DesireZ/Vision for one of my son (10 years... there's no religion....) to replace a old 4GB crashed one.
The phone is running SenseI ROM (fine ROM: a very good way to replace the stable CM7 and run ICS 4.0)
I bought on Amazon Samsung EVO uSD 16GB Class10... and it was not recognized... So I read it on the PC to see if is was good or not: it was OK!
Recovered the trouble upgrading the Galaxy S2 of the other son from a old 8GB class 4 (probably Kingston o Transcend) to the brand new 16GB EVO Class 10, and putting the old 8GBB in the Desire Z: quickly recognized and optimally mounted both cards over both the 2 phones!
But I was disappointed... more than speed performance I thought that Class 10 memory card were also better on quality, due to a more robust and stable architecture of the chips inside.... and
much more recommended for the "systemdisk-like" use on Android Smartphones!

Which class 10 32GB microSD card?

so, which would be the best, most stable class 10 micro sdhc card? i can't seem to find a definitive answer, as everyone seems to complain about the cards not being a "true class 10", etc. there are only a few reviews on newegg,
http://www.newegg.com/Product/Produ... 600006235 600082443&IsNodeId=1&name=Class 10
and amazon, a bunch of people complain about the speed ratings mot being true.
http://www.amazon.com/s/ref=nb_sb_s...32gb+micro+sd+class+10&ie=UTF8&qid=1318260310
which one do you guys have experience with, and would recommend? the kingstons are just out of the question, as i doubt that they'd be worth twice the coin.

It would be nice if you narrow it down to specific cards.
Although there is to note that most people do not need anything past a class 4 which is more than enough to handle day to day transfer between phone and card.
Sandisk seems to be a darkhorse here since they don't really show you a class number and it ranges from 2 - 6 mbps. The best way is to simply test it out with a SD card testing program.

thanks for the response. specifically, i like the PNY and SanDisk, but like you said, sandisk is secretive about their speeds. i don't want to buy, test the speeds, and return if i'm not happy with it. and is class 10 not required for recording HD video on our phones? thanks again

nah, class 10 is not required to record HD video. besides if i remember correctly, the dz only records up to 720p. you should still be fine unless you're shooting a 20 minute video.

There are some reports from people with various issues with Class 10 cards. Its not widespread by any means (plenty of people here seem fine with their Class 10), but it seems that Class 10 have more issues than lower Classes. So some here will recommend Class 4 or 6 (can't remember which) as the highest you should get.
I'd stay far away from PNY if I were you. I've owned 2 PNY products. Not Micro-SD, but an SD card and a USB thumb drive. On the thumb drive, the USB port and memory chip pulled/broke right out of the plastic casing with regular use (not damaged in any way). The thing just looked and felt flimsy. But I needed one in a hurry for a business trip, and I bought what the store had. I figured, its a USB thumb drive, you can get these things for free. How bad can it be? And I was shocked when the thing actually broke apart after a few weeks.
Similarly, the PNY SD card I have split into 2 pieces (along its seams). In both cases (PNY thumb drive and SD card), the memory chip itself still worked fine, and it was just a matter of using some super glue to hold together the plastic casing that failed. But it just displays shoddy and cheap build quality. I own 3 Sandisk Micro-SD cards, and a couple Sandisk SD cards and thumb drives. Never had an issue with any of them, and build quality is much better than PNY.
There is a long thread in accessories with SD recommendations:
http://forum.xda-developers.com/showthread.php?t=1042324

DUDE! I had the same problem with the PNY thumb-drive! It was the attache series I think. Anyways yea stick to well known brands that are consistently rated high, sandisk, kingston, adata, etc. Honestly though, class 6 would probably be the fastest you'd need unless your gonna be taking extremely high quality pictures at a very fast speed lol aka multi-shot. But then again I'm not sure our phone is even up too that anyways lol.

I have an ADATA 16GB Class 10 from newegg. Has given me zero issues. I would imagine this is probably the same for the 32gb version.
Not sure if the 32GB would hold up. I found out that I'm not that big of a packrat on the size of the SDcard, so I went with a 16gb instead of paying more for space I'd never use, or take years to accumulate.
h2testw 1.4 log after testing it out when I received it:
Warning: Only 15786 of 15787 MByte tested.
Writing speed: 15.1 MByte/s
Reading speed: 18.5 MByte/s
It was definitely a step up from the 4GB class 4 kingston I was previously using, which was getting write speeds of around 5-6mb/sec. After moving onto the Adata, I noticed speedier loading in the photo gallery like night and day. It used to take 2-3 seconds to load the gallery, especially if it was a big picture folder. Now it takes literally milliseconds to load the content. Of course, this may just be anecdotal and placebo effect, but my general experience with android and sdcards for the last 3 years is on the line about it.

actually i retract the kingston comment, i think they had problems with 32gb class 10 cards specifically now that i recall...

mputtr said:
It would be nice if you narrow it down to specific cards.
Although there is to note that most people do not need anything past a class 4 which is more than enough to handle day to day transfer between phone and card.
Sandisk seems to be a darkhorse here since they don't really show you a class number and it ranges from 2 - 6 mbps. The best way is to simply test it out with a SD card testing program.
Click to expand...
Click to collapse
The Sandisk that came with my phone has the class 4 symbol printed on the card...
I'm thinking of getting a class 4 myself, don't feel like paying almost +100% for class 10. I'll probably get an A-Data, as it gives a decent price per GB. I'm just torn between 16 and 32 GB
As for Kingston, I think the quality of their products went down a lot in the last two years.

costipl said:
The Sandisk that came with my phone has the class 4 symbol printed on the card...
Click to expand...
Click to collapse
Its an old card. Sandisk used to designate Class, but they don't anymore.
---------- Post added at 01:16 PM ---------- Previous post was at 01:12 PM ----------
kaijura said:
I have an ADATA 16GB Class 10 from newegg[/url]. Has given me zero issues. I would imagine this is probably the same for the 32gb version.
Click to expand...
Click to collapse
If you look through the thread I linked on my previous response, you will see there are some folks that claim more data corruption issues with 32 Gb cards versus smaller capacities. It seems purely anecdotal. But my point is, don't assume.

My adata 32gb class 4 is going strong since august...

sooo... is class 6 good enough for games, apps2sd, recording HD video, etc?

Cobra281 said:
sooo... is class 6 good enough for games, apps2sd, recording HD video, etc?
Click to expand...
Click to collapse
My sandisk class 4 is fine, class 6 would be better than fine my class 4 gets 6 speeds though
Sent from my HTC Vision using XDA App

xT4Z1N4TRx said:
My sandisk class 4 is fine, class 6 would be better than fine my class 4 gets 6 speeds though
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
can you please tell me the model # of your sandisk? i need a new sd card asap. running outta memory

Cobra281 said:
can you please tell me the model # of your sandisk? i need a new sd card asap. running outta memory
Click to expand...
Click to collapse
For me I bought this off ebay ( http://www.ebay.com/itm/380405008880?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 ) and it has been working great for me. I loaded it up to about 28Gig and had no trouble. Currently I have 10gig free.

I've got the Sandisk 32gb class 10.
But the one from Samsung seems great.

The SanDisk 64GB MicroSDXC is also fully compatible despite the device being a sdhc device. Apparently the protocol differences lie on code and not on hardware.
Sent from my HTC Vision using XDA App

ampdj89 said:
The SanDisk 64GB MicroSDXC is also fully compatible despite the device being a sdhc device. Apparently the protocol differences lie on code and not on hardware.
Sent from my HTC Vision using XDA App
Click to expand...
Click to collapse
did they already verified that it works on the DZ?

mputtr said:
did they already verified that it works on the DZ?
Click to expand...
Click to collapse
Yea according to this article and many other phones on Gingerbread. I suppose there shouldn't be any problem under ICS.
http://androidcommunity.com/sandisk...working-on-multiple-android-devices-20110927/

well. that is fantastic.. Maybe when the prices go down in a year i can get that to upgrade my 32gb card.

SD card confusion!

After lots of searching and reading can anyone help with SD card choice? Why is it such a problem for this phone? Is there different hardware in the phone or is it the way the ROM or Kernel addresses the card that seems to cause so much trouble?
For every card that is recommended you can find somebody who has had issues with same card so do I need to find out about the hardware in phone or stick to ROM or kernel threads for best card for me?
Have tried 3 cards so far and the lowest spec one was the best!! I know there are lots of reported problems with class 10 cards but also lots say their phones perform great with them but I found the class 10 PNY 8GB card the slowest I've used and a class 4 8GB sandisk the fastest with a class 6 8GB samsung nearly as fast but still cannot work out why there is so much trouble with SD cards

Ive been using a class 6 A-DATA sd card for quite a while now and I must say, I'm impressed with its speed. Its great for A2SD and SD ext. I tried sebastiaans rom, and it runs pretty smooth on this card, WAY better than on my class 2 samsung sd card.
In the end its just a matter of taste, some say Samsung is better, some say A-DATA is and others Kingston. Ive read that a class 10 card is a bit of overkill for the usage and that a lot of them arent as fast as they claim to be. I'd say class 6 will do just fine! The brand does not matter, stick with the big names tho . Kingston, A-DATA and Samsung seem to be bought the most!

Thanks but still want to know why, what is the limitation...the phone hardware or rom/kernel? I'm on seb15 AIO5.0.2 now with cm7 r2 hboot and the class 6 samsung 8GB in much faster than the class 10 PNY 8GB so not getting any lag now but seems no different to the class 4 sandisk that i replaced due to card errors but that was on standard HBoot.
Have just ordered a sandisk ultra 16GB card for extra space so hope it is as good or better and it was a bargin http://www.play.com/Mobiles/Mobile/...-Micro-SD-HC-Memory-Card-Class-6/Product.html
but what is the fastest read and write speed you can expect from the hardware? I use antutu now to check speed.

andy3434 said:
Thanks but still want to know why, what is the limitation...the phone hardware or rom/kernel? I'm on seb15 AIO5.0.2 now with cm7 r2 hboot and the class 6 samsung 8GB in much faster than the class 10 PNY 8GB so not getting any lag now but seems no different to the class 4 sandisk that i replaced due to card errors but that was on standard HBoot.
Have just ordered a sandisk ultra 16GB card for extra space so hope it is as good or better and it was a bargin http://www.play.com/Mobiles/Mobile/...-Micro-SD-HC-Memory-Card-Class-6/Product.html
but what is the fastest read and write speed you can expect from the hardware? I use antutu now to check speed.
Click to expand...
Click to collapse
I have tried 2 of those 16gb ultra mobile dual color cards and I had a lot of frezes, with AIO 5.0.1SE rom, CM7r2 Hboot. So I had to go back to my lexar 16gb class6.

Hhmmmm like i said for every good report on a card there is a bad one, have read a few good reports on this card and the original class 4 sandisk card has been the best i've used so far so thought would give it a try...hope I'm lucky with it!!
It should arrive today or tomorrow so will repoet what i find

Well the sandisk 16gb ultra mobile has turned up and been running it for a few days now with no problems, ROM is running smooth with no freezes so far.
Using antutu to bench mark it and it appears to be slightly faster than the class 6 samsung 8GB it replaced, alot quicker than the class 10 PNY but still slower than the old class 4 sandisk 8GB!
ROM runs sloothly and I have enough space for now so will stick with it.

Yep... ultra mobile is the best card that I ever use till now.

andy3434 said:
Well the sandisk 16gb ultra mobile has turned up and been running it for a few days now with no problems, ROM is running smooth with no freezes so far.
Using antutu to bench mark it and it appears to be slightly faster than the class 6 samsung 8GB it replaced, alot quicker than the class 10 PNY but still slower than the old class 4 sandisk 8GB!
ROM runs sloothly and I have enough space for now so will stick with it.
Click to expand...
Click to collapse
Thanks to let us know, but can you tell me what rom are you using with it? are you still using Seb rom? CM7r2 or Stock hboot? Thanks

Seb rom still, version 5.1AIO and cm7 r2 hboot
Sent from my HTC Desire using XDA App

We recommend a Class 6 Transcend for any kind of data swapping like data2sd, or data2ext, on the basis of maximum positive feedback. A class 10 is more often overkill and most brands are incompatible with the Desire, while a Class 2 might be underpowered (in terms of speed).
Personally tested cards with data2sd:
Class 2 Kingston-Ok
Class 6 Transcend 4GB-Great
Class 6 SanDisk 16GB-Lags
Class 6 Samsung 16GB-Great
Class 4 3CPro 16GB-Great
Class 10 Transcend 16 GB-lags
The polls section of supernova.droidzone.in has some polls regarding speed of card with my roms.

..and you can't get a more useful response than that!