yashsingh1/xdaforums huggingface dataset:
[Galaxy S III Q&A, Help & Troubleshooting] Slimboball:
Well I certainly know my Sandisk Ultra 32GB MicroSD was genuine! It was bought from www.mymemory.co.uk, arrived in a sealed white Sandisk package. It is this card http://www.mymemory.co.uk/Micro-SDH...Android-Micro-SD-(SDHC)-Class-10-UHS-1-30MB_s

I mentioned in my previous posts that it seemed to have rectified its problem, well that's not exactly true, because I am now getting intermittent warnings and mount/unmout symbols in the notification area. So I'm sure it is going to die once and for all shortly.

Not as big a problem as I have fully backed it up whilst it still works. I'm just annoyed that I have to do this.
[Galaxy S III Q&A, Help & Troubleshooting] Orical:
I did a little searching and a lot of what's reported on the subject is summed up in two of the most common issues. The first is a bent pin inside the device that causes the SD card to fail, the other aside from a poorly made SD card is software based corruption meaning the card is partitioned improperly or the software used corrupts the state of the memory.

Either way if its the only card that you had this problem with then its probably just a bad card, with the amount of cards put out by any company your gonna run across this more frequently in a higher compression card due to faults in manufacturing, I also read they are aware of the high volume of problems and if you contact them they will replace it if under a 90 day purchase for free and some companies after that if you pay shipping.
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
You have the right to ignore evidence, make incorrect assumptions about things you have no personal experience with and ultimately remain ignorant. I prefer to go with ocam's razor. If my device was genuine (it was) and I wasn't doing anything fancy with it (I wasn't) and it broke (it did break), there is nothing there pointing to fake cards with dodgy things running on them. But as I said, you have every right to be wrong. :)

On the technical note, my card has been sent to the recovery company suggested by SanDisk. They said the controller chip is completely unresponsive and cannot recover it. The card is absolutely 100% genuine as it has been authorised by SanDisk for rma and if you paid attention at all, many people have gone through the rma route here, something that would be impossible with a fake card.
[Galaxy S III Q&A, Help & Troubleshooting] BrotherDave:
I have a stock never rooted S3 and have had this problem. Transcend 32GB card bought from ebuyer and have just yesterday fell out with it again. The phone started to display the little memory card symbol in the notification area suggesting a format, took the card out of the phone inserted into a card reader and into my pc and shows blank/empty/corrupt whatever but nothing on it and asking to be formatted. This is the THIRD time this has happened now since buying the card back in August so that's it getting ditched now, don't know whether it's the card or the phone but will carefully consider a replacement.

:eek:
[Galaxy S III Q&A, Help & Troubleshooting] jmpmjmpm:
You seem to have misunderstood. If you read my posts I never said that every card that fails is fake, just that the majority probably are. I am not questioning the fact that your card is genuine and you have experienced a bonafide failure. However, your card would have failed regardless of the device it was used in. You had a defective card, not a defective device. If your s3 killed your card why would Sandisk replace it under rma? If it makes you comfortable I will concede to being "wrong".

What I am saying simply is that I do not believe nor have seen any evidence that failure rates of cards are any higher in s3 than any other device. Also as an engineer working with "critical infrastructure" of a sophisticated electronic nature I have seen many times people's capacity to be down right stupid, even dishonest when reporting faults so most certainly won't be treating a few posts with no supporting evidence on a web forum as gospel!

You are entitled to be wrong in your assumption that your s3 killed your card yet you have no evidence whatsoever of this ;)

That is my last thought on this subject. I wish you well with your s3 and your replacement memory card

Sent from my ARHD S3
[Galaxy S III Q&A, Help & Troubleshooting] Ashley1987:
Ive had my32gb sandisk one for well over a year now, just over a month in the s3. I think a lot of posts in here are just coincidence that their card have died in this phone.
[Galaxy S III Q&A, Help & Troubleshooting] clickityclack:
I'm still using the same SanDisk card I used in my Blackberry beginning at least 2 or more years ago.....
[Galaxy S III Q&A, Help & Troubleshooting] rizzy123:
So finally which is the best card to buy if looking for a 64gb card and if possible the price too (in gbp)

Thanks
[Galaxy S III Q&A, Help & Troubleshooting] jmpmjmpm:
The only advice I can give is whatever card you buy do your best to make sure it's genuine. Don't be tempted by low price fakes (like so many here are then blame their device when it fails). Once you receive it check and test it until you are satisfied it's genuine brand and capacity (there is lots of info what to look for so search Google). If you do these things it is highly unlikely you will have any problems with your card in any device during its lifetime :D

Sent from my ARHD S3
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
The problem is mainly with SanDisk 32gb class 10 cards. Most people have the problem with this particular type. SanDisk acknowledged there is an issue and claim to have fixed it but there is probably still stock of dodgy cards out there.
[Galaxy S III Q&A, Help & Troubleshooting] adnan.makarevic:
i had a the same problem with two sandisk 32gb class 10 cards, the first one get some random unmounts and mounts, and some time later it was unaccessable.. i get replace for it, but didnt have the time to wait two weeks and buy a new one, but the same card as before.. with this one, i had the same problem again, a lot of random unmounts and mounts.. if you search over google, you will find a lot of entries regarding sandisk 32gb class 10 card, it looks like the card and the device are not compatible for unknow reason.. the sandisk card work without any problems on my pc with a card reader, but in the phone sgs 3 lte, it has problems.. now, i order two days a go a transcend 32gb class 10 card and for now the problems are gone.. i really think there are some problems in combination with sgs 3 lte and the sandisk.
[Galaxy S III Q&A, Help & Troubleshooting] arghness:
Do you have a link to where they acknowledge the issue and claim to have fixed it, please?
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
sorry I don't have the link. I saw it on an Amazon review. Searching for "SanDisk problem with s3" yields the review in the second result. I hope this helps.
[Galaxy S III Q&A, Help & Troubleshooting] rizzy123:
Just purchased SanDisk 64gb Class 10 card direct from Amazon for £39 + free super delivery. It's got over 150 5* reviews out of 200 and a lot of guys bought for the note 2 or S3 and theyvery happywith it so I'm hoping I won't have problems when it arrives
[Galaxy S III Q&A, Help & Troubleshooting] bocke85:
AW: Galaxy S3 - the sd card destroyer

I have the problem that my SanDisk 32 GB always I woke up my phone will be mount or unmount.

In a few days I would try an Samsung class 10 card. I hope this one is better.

Gesendet von meinem GT-I9300 mit Tapatalk 2
[Galaxy S III Q&A, Help & Troubleshooting] swan14:
My card still hasn't died but even after formatting it a fee times it still umounts constantly.

Would I still be able to claim warranty? It works in my PC fine so I don't whether I can....
[Galaxy S III Q&A, Help & Troubleshooting] Ravin_Dave:
Just became the latest victim to this problem. When I awoke this morning (I use my S3 as my alarm clock) I noticed the alarm tone was not the usual one. When I inspected my phone, it said that no SD card was present. I powered off and back on again and it told me that my SD card was blank and needed formatting. I turned off again, removed and reinserted the card, switched back on, and - no SD card present.

I have tried an older 8Gb Transcend to verify that the phone was not borked, and it works (for now). The SanDisk card has been placed into my USB reader and cannot be seen under either Win7 or Ubuntu.

I bought this card from Amazon UK in September last year. It is the SanDisk Ultra 32Gb U1 (red/grey) Up until this morning / last night I had used it without any problems since it was bought.

My I9300 is completely stock unbranded and has never been rooted or had a custom ROM or kernel. Currently running XXELLA

I'm going to contact SanDisk today for RMA.

Would be good if we folks here can find a common hardware / software combination (if any) that seems to kill our cards. :fingers-crossed:
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
I

Out of curiosity, what version of the 9300 do you have? 16 or 32gb?

Also, was your phone on the charger when this happened? And if so, was it the stock charger?
[Galaxy S III Q&A, Help & Troubleshooting] mustang2012:
Hi guys.... I bought the original samsung from Korea it's 32gb sd card ultra high speed and installed this sd card monitor and here weird thing happened....

Can anyone explain why??
[Galaxy S III Q&A, Help & Troubleshooting] Ravin_Dave:
Hi Allotrios, I have the 16Gb 9300 bought SIM free from Amazon UK. The phone was sat on my bedside cabinet, not connected to the charger at the time. I had been taking a lot of photos the night before, and before I went to bed decided to switch WI-FI on so that it would sync them up to my Dropbox. Lucky I did, as when I woke up, my SD card was fried !

Forgot to mention - I only ever use the stock charger that came with the phone when at home. In the car I use a genuine Samsung charger.
[Galaxy S III Q&A, Help & Troubleshooting] Valwit:
Got one of my S3s from warranty repair few days ago, had no time to play with it though. Paper states that the mainboard has been changed. Haven't thought of this, so I just marked the sim/sd board and this a new one too.

I'll let you know on how's going.

And as for my Sandisks: all genuine, from Sandisk themselfs, as I got them replaced :) It's not a cheapo/fake card issue here.
[Galaxy S III Q&A, Help & Troubleshooting] rizzy123:
So far card has been working fine. I mainly use it to store data from big games like N.O.V.A 3 and Asphalt etc.

It does the job OK but its a bit slow. Not sure if anyone else finds it slow. Games take a little longer to initially load up but are fine when you start playing.
[Galaxy S III Q&A, Help & Troubleshooting] fantasmanegro:
there you have the link

http://www.amazon.co.uk/gp/product/B007WTAJTO/
[Galaxy S III Q&A, Help & Troubleshooting] arghness:
Thanks for taking the time to find that, but a review from a random guy saying Sandisk admitted the issue isn't really great evidence. I was hoping for something a bit more official from Sandisk or Samsung. Ah well. My latest card has held out for a few days with no errors being reported, which is a record. I've got my fingers crossed that this one will be compatible!
[Galaxy S III Q&A, Help & Troubleshooting] hem0101:
No problem with me 16GB card ... Also we have here in india full guaranty if sd card got dead..
[Galaxy S III Q&A, Help & Troubleshooting] fantasmanegro:
just phone call...

http://xdaforums.com/showthread.php?p=36734298

:eek:
[Galaxy S III Q&A, Help & Troubleshooting] 2k13i:
same in Holland I got 16gb seems fine maybe only 4-8 gb ?
[Galaxy S III Q&A, Help & Troubleshooting] dimsum888:
mine was bricked too. sandisk 32 gb class 10
[Galaxy S III Q&A, Help & Troubleshooting] indresh88:
Mine is sayingsd card is damaged try reformatting it.....16gb samsung.....I have this problem on the second day of my usage on s3
[Galaxy S III Q&A, Help & Troubleshooting] gkagman:
I had an issue with my 32g sandisk but it was just a faulty sd . The shop replaced it and i ha no problems since then...
[Galaxy S III Q&A, Help & Troubleshooting] omek07:
I have sandisk 32gb 10 class and i have the issues with mount and unmount .

So I have to replace the SD card or i have to replace the sd/sim card module cable ????

I am confused some people said that they replace the SD sim card mobule cable and fix the problem.
[Galaxy S III Q&A, Help & Troubleshooting] Ravin_Dave:
Update. Had a chat with a SanDisk techie. The card is definitely fried, so he suggested I send back to them in the Czech Republic. Problem is I would have to pay postage at about half the cost of a new card !!!

Sent an e-mail to Amazon, not expecting much as I'm over 6 months since I bought the card. Got an e-mail back saying a replacement was sent out same day, and that I can just send the faulty one back when I get the new one. Best part, they pay for returns cost. :) Kudos to them !!
[Galaxy S III Q&A, Help & Troubleshooting] FileFixer:
From my point of view, SanDisk not work as espected with SGS3.

I tested 5 cards in 5 mobile phones. 3 was SGS3, 1 is X10 mini pro, 1 is Htc Desire and few PC computers. In my mobile phone SD/SIM module was changed.

Now I have Transcend 32GB class4 and work great.

SanDisk work on all devices except SGS3 and work on all PC too. All other SD cards except SanDisk Mobile Ultra class 10 (grey/red) work on all mobile phones and PC.

My conclusion is that SanDisk has not great compatibility with SGS3.
[Galaxy S III Q&A, Help & Troubleshooting] SynapticRelay:
Now I am joining the list, my 32gb Class 6 (although china brand, cdrking) died tonight. Unmounted itself and won't detect even in my 2nd GS3 so im sure it died completely. :(

This gave me the reason to buy a good sd card now lol
[Galaxy S III Q&A, Help & Troubleshooting] KruseLudsMobile:
No problems with mine at all...

Sent from my 32GB Verizon Galaxy S III (SCH-1535) - stock (unrooted) JellyBean ROM with SanDisk 64GB Class 10 MICROSDXC - using XDA Premium
[Galaxy S III Q&A, Help & Troubleshooting] Slimboball:
It's only the 32gb SanDisk cards that seem to be affected.

Sent from a Galaxy S3 LTE, far far away........
[Galaxy S III Q&A, Help & Troubleshooting] Slimboball:
Most people in this thread DID buy original legit SanDisk cards, myself included, that's the point on this thread, to make people aware.

Sent from a Galaxy S3 LTE, far far away........
[Galaxy S III Q&A, Help & Troubleshooting] Zikolina:
I know i did not say that you bought a fake sandisk. But it can also be the phone that causes the problem...
[Galaxy S III Q&A, Help & Troubleshooting] FileFixer:
Better then you say is that is better when people dont buy SanDisk 32GB Class 10 (red/grey) cards, fake or original like me.;)
[Galaxy S III Q&A, Help & Troubleshooting] Slimboball:
I agree, my original red/grey card has had it so I have ordered a new PNY Class 10 32GB has I have heard good reviews about them. :)

Sent from a Galaxy S3 LTE, far far away........
[Galaxy S III Q&A, Help & Troubleshooting] devarajreddy4ever:
use standard companies sd cards.....
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
Define "standard companies" please?
[Galaxy S III Q&A, Help & Troubleshooting] devarajreddy4ever:
use scrontium...
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
Do you mean strontium? They are considered worse than SanDisk.
[Galaxy S III Q&A, Help & Troubleshooting] Ravin_Dave:
Well, had my replacement card for 2 days now and so far, so good !!

We'll see how this one gets on with my phone :fingers-crossed:
[Galaxy S III Q&A, Help & Troubleshooting] KruseLudsMobile:
Same here...

Sent from my 32GB Verizon Galaxy S III (SCH-1535) - stock (unrooted) JellyBean ROM with SanDisk 64GB Class 10 MICROSDXC - using XDA Premium
[Galaxy S III Q&A, Help & Troubleshooting] KruseLudsMobile:
Again I say, no issue. And I am using about HALF of the space on my card with photos and music. It also mounts correctly on my sd card reader I installed on the front of my pc. Just always turn off the phone before removing it or inserting it, and also if connected to the pc go into windows explorer and right click on the drive to select 'eject', and only then remove the card when it says it is ok to eject the card. Don't root and use other ROMS. The other ROMS do not have the correct drivers for dealing with exFat.

...'nuff said.

Sent from my 32GB Verizon Galaxy S III (SCH-1535) - stock (unrooted) JellyBean ROM with SanDisk 64GB MICROSDXC - USH-1 using XDA Premium
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
Most of the reported problems are from 32gb SanDisk class 10 regardless the Rom etc. Not the 64gb you have (though some few cases there as well) But thanks for the feedback.
[Galaxy S III Q&A, Help & Troubleshooting] KruseLudsMobile:
Thanks for the clarification

Sent from my 32GB Verizon Galaxy S III (SCH-1535) - stock (unrooted) JellyBean ROM with SanDisk 64GB MICROSDXC - USH-1 using XDA Premium
[Galaxy S III Q&A, Help & Troubleshooting] slaphead20:
My observation.....further to what has previously been mentioned.

Always unmount your card before removing, whether it be from the phone/pc/card reader.......personally I wouldn't be surprised if this was the root of the problem........along with the obvious fake cards ;)
[Galaxy S III Q&A, Help & Troubleshooting] FileFixer:
In my case this is not a problrm. I was unmount every time before remove sd card from mobile.
[Galaxy S III Q&A, Help & Troubleshooting] querotequila:
Ok, so it's a card problem, but why just when I use the stock or Siyah kernel? with Perseus I have no problem!

Send from my I9300 [<0>]
[Galaxy S III Q&A, Help & Troubleshooting] nacam:
I was having issues (blank or damaged Sd card too often) with my 32gb class 10 Sandisk. Right now it works perfectly.

I run the chkdsk (unit letter) /r and I found no errors but something was wrong with the MBR so I Installed testdisk in windows, and this is what I've done:

Intel partition table type

[MBR Code] write Testdisk MBR code to first sector.

And that's all.

Do this at your own risk, it worked for me.

Enviado desde mi GT-I9300 usando Tapatalk 2
[Galaxy S III Q&A, Help & Troubleshooting] allotrios:
The problem is intermittent. It doesn't matter what kernel or Rom or mounting or unmounting. It doesn't happen to all cards but rather a large percentage of SanDisk 32gb class 10 cards. They are quite popular as they are quite cheap. I have got a 32gb class 6 Samsung at the moment and have no problem. Having said that, up until the SanDisk I had died, it didn't have any problems either. And that was for 4 months or so.
[Galaxy S III Q&A, Help & Troubleshooting] koolshubh:
Thankss for the info....
[Galaxy S III Q&A, Help & Troubleshooting] said_abush3leh:
Can you explain more mate

:confused::confused:
[Galaxy S III Q&A, Help & Troubleshooting] nacam:
Sure.

Just install Testdisk in your computer http://www.cgsecurity.org/wiki/TestDisk_Download

Open the program with your sd card plugged in your computer (adapter required).

The steps are:

*Select No log

*Select [Intel] as partition table

*Select [MBR Code] to write first sector

That´s it. :p

Try it and post if it solved your problem
[Galaxy S III Q&A, Help & Troubleshooting] KruseLudsMobile:
Still no problem - why mess with something that's not broken!

Sent from my 32GB Verizon Galaxy S III (SCH-1535) - stock (unrooted) JellyBean ROM with SanDisk 64GB MICROSDXC - USH-1 using XDA Premium
[Galaxy S III Q&A, Help & Troubleshooting] Slimboball:
You won't have a problem as you have a 64gb disk, if you read the posts, it had been mentioned time after time that this is in relation too 32gb SanDisk cards only.

Sent from a Galaxy S3 LTE, far far away........
[Galaxy S III Q&A, Help & Troubleshooting] Guti1977:
Didn't work. I have downloaded the testdisk 6.14 utility. I have a SanDisk MicroSDHC Class 4 32GB.

I have tried formatting the card as FAT, FAT32, NTFS and EXFat on my PC. Also tried formatting within my Galaxy S3 with no luck.

Card will remove unexpectedly however it only happens when the phone goes to sleep, as soon as screen is on this won't happen.

The issue by the way is killing my battery because of the process of removing and mounting the SD card.

I will try a 4GB Kingston that I have at home tonight.

I have noticed that people are having the issue with SanDisk's more than any other brand.

Not a happy camper here :(

Edit: This card has been working since January with no problems. This behavior started the same day I flashed AOKP ROM. Returned back to stock hoping that the issue would go away but it wouldn't.
[Galaxy S III Q&A, Help & Troubleshooting] Slimboball:
It will be the SanDisk that is the problem, I've replaced mine with a PNY 32GB class 10 and had no problems at all.

You can download SD Card Monitor free from the Play Store & just see how many times your card mounts & unmounts, it's ridiculous!

Sent from a Galaxy S3 LTE, far far away........
[Galaxy S III Q&A, Help & Troubleshooting] Guti1977:
Yes, I did that as well, that is how I've determine that it will only happen when the phone goes to sleep. When sleep the SD card did this around 3 or 4 times on a 5 minute period. Incredible.

I hope that this is an SD card problem and not my phone. :fingers-crossed:
[Galaxy S III Q&A, Help & Troubleshooting] Slimboball:
I would lay money on it being a card problem and not your phone mate.

Sent from a Galaxy S3 LTE, far far away........
[Galaxy S III Q&A, Help & Troubleshooting] Aria807:
My SanDisk 32GB UH-i crapped out too after 5 months. Ordered a Transcend Class 10 32GB. Hopefully this one won't crap out :X
[Galaxy S III Q&A, Help & Troubleshooting] shadyr25:
I also have 32gb sandisk class 10 u-1 less than a year old, the weird thing is when used in my tab or s2, the issue isn't there. It works as it should. Once mounted on the s3... the problem is persistent. I've also mounted another 32gb card unbranded on the s3 which I've had for over a year now, maybe two, but no problems there.

My s3 doesn't like my 32gb sandisk :(

It all started when I upgraded to one of the 4.1.2 updates for the s3, otherwise it was perfectly fine.

I will be trying the MBR thing right after I finish full format (overwrite) which is at 45% of overwriting as I type... don't know how much more longer the format will take. Fingers crossed.

Edit: full format (overwrite) and MBR successfully done. Will report back later. So far the difference I'm seeing is in it data tranfer rate, before I would get 9-10MB/s or lower and now its speed has increased to a constant 12MB/s.

Edit: well it's been over 6 hours now and am really happy to say... no problems as of yet! :D but it's still too early to tell or get happy, will report back in a day or two. Stay tuned!

Edit: ...... very sad to say that I've just experienced the sd card unexpectedly removed again :( :(

Guess the sd card has to go :(
[Galaxy S III Q&A, Help & Troubleshooting] BarnOwl:
Well, besides what everybody else writes on this thread, I tried your solution yesterday and so far it works.

I had random mounts/unmounts with my 32 Gb Sandisk (The red/grey one) and none after the fix. I also had a complete wipeout a month ago (The whole content of the card was gone).

So far, so good and I surely do hope it will continue like this!

Thanks! :good: (keep my fingers crossed!)
[Galaxy S III Q&A, Help & Troubleshooting] kenyw:
My phone stopped being able to access its SD card today. It is a Lexar 32GB Class 10. Rebooting and power cycling did not make the SD card visible again. The card is still in the phone. I have also noticed the phone being warmer and the battery draining more quickly than usual and BBS is showing a lot of time being given to an "mmc1_detect" Kernel Wakelock.

Yesterday, the phone had intermittently and briefly shown the 'Preparing SD card...' notification, which was probably a warning sign of some kind.

Going to try the solutions posted here after finishing work. Hope the symptom descriptions will be helpful to others, though.