Develop Bugs

32 gb sdhc card problem

So I decided to upgrade my cureent 8gb sd card for a 32gb one, I bought it from amazon (with all the ebay sd card fraud rumors I decided not to take any chances) and I had install it on my phone copied my 8gbs data unto the card and suddenly after disconnected after copying data for the second time, the phone does not want to read it. It only tells me sd card ready unmount on the notification bar I try to mount on the settings it but it doesn't work, I also tried formatting it but it won't do it either on the phone. Anyone please help I really have no idea why this happen, well I think because maybe because I didn't format the sd card prior installation?
T-Mobile G2 1.42 GHZ

I will gladly appreciate anyone that can help me fix this issue i don't know what to do, I spent 50 dollars on the sd card and now it can't be formatted
T-Mobile G2 1.42 GHZ

androidfeen809 said:
I will gladly appreciate anyone that can help me fix this issue i don't know what to do, I spent 50 dollars on the sd card and now it can't be formatted
T-Mobile G2 1.42 GHZ
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Possibly a defect return it. Or u probably bought it off an individual seller from amazon. Are u talking about sd or microsd because i think micros go more than 50
Sent from my Arc using XDA premium App

i got mine from amazon for 54 USD. works fine. so, i'd day, yeah, return it if at all possible. its defective.

I only have 4 gigabyte SD card , no money to buy 32 gigabyte

Yup yu guys were right I contacted the seller and he gave me a full refund because he admitted he had receive a batch of defective micro sd cards smh, all I say to this is, do not buy things like memories on amazon or ebay, newegg is by far much more reliable. I went on the reviews on amazon for the defective product and saw users review it as bad for the same problem I was facing.
And Trust me I tried everything to get the card to work I tried the switch on the adapter and other alternatives like formatting programs ect, it has been a pain. To all of this I'm just glad I got my refund.
T-Mobile G2 1.42 GHZ

mtmerrick said:
i got mine from amazon for 54 USD. works fine. so, i'd day, yeah, return it if at all possible. its defective.
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Yea it was too cheap to be true, I order one from newegg for 67 dollars with free 2 day shipping from shoprunner, it was more expensive but base on the product review which none were below 4 stars, the product seems legit and not counterfiet like my previous order from amazon, I also notice that the 32 gb sign on the card I purchased @ newegg was located on a different location than the counterfiet one.
T-Mobile G2 1.42 GHZ

As an experienced Sd user, I would like to point out that often the reader used with the pc to format/write data to the card is at fault. With the SDHC format, you need to have the appropiate SDHC reader, otherwise corruption will occur.

njkl said:
As an experienced Sd user, I would like to point out that often the reader used with the pc to format/write data to the card is at fault. With the SDHC format, you need to have the appropiate SDHC reader, otherwise corruption will occur.
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Well I tried with the sdformat 3.0 program for sdhc cards and it didn't work even when the switch was away from the lock side I even put tape so it doesn't slide and it didn't work it would tell me the card is disk write protected and the windows 7 formatter would tell me windows was unable to complete format.
And what reader do you recomend for micro sd card formatting? I have one coming tomorrow and don't want this to happen again or maybe it won't because this one hopefully won't be counterfiet
T-Mobile G2 1.42 GHZ

The new one works perfect I transfer all of my files from the 8gb micro sd card
T-Mobile G2 1.42 GHZ

prizzprizz said:
I only have 4 gigabyte SD card , no money to buy 32 gigabyte
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Ya that really is gonna help the ops problem

SuperDeform said:
Ya that really is gonna help the ops problem
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To be honest I really don't care if yu write irrelevant stuff in my threads, some people get really mad sometimes, I wouldn't risk it tho lmaooo
T-Mobile G2 1.42 GHZ

[Q] Question about SD card problem

I'm looking for some thoughts on a problem I encountered. Due to a problem with the camera, I got a refurbished phone under warranty. When I got it, I took the 8GB micro SD (not the original HTC, but a faster card from Transcend) from my old phone where it had worked flawlessly and installed it in my refurbished phone. Wouldn't mount. Put it back in the original phone; wouldn't mount. Computer wouldn't recognize it through multiple adapters/readers. Not erased or formatted, nothing would recognize it. I know crap happens sometimes. I had an old 2GB card that I installed and it worked with no problems.
I RMA'd the card back to Transcend (which is another story) who would not replace it due to a scuff mark on the edge of the card - physical damage!!!
Anyway, I ordered a new Adata card, 8GB class 10 and when it arrived, I transferred files to it on my computer (so it was working) and put it in the phone. Wouldn't mount. Put it back in the computer and no files could be seen. Ran scandisk, files reappeared. Installed back in the phone, wouldn't mount. Now it's fried, too. Computer won't recognize it anymore. Installed 2GB card back in phone and it mounts and works fine.
I've got a replacement phone coming again from TMobile - it's got to be the phone doing this. But I'm out 2 SD cards. I'll try a RMA on the Adata card to see if I can get a replacement, but I may buy another card in the meantime.
Does anybody have any thoughts on this problem? Why would the phone play nicely with the 2GB card but neither of the 8GB cards? I don't think I can do anything different, but at $15 a shot, I'm starting to hesitate buying a new card to put in the replacement phone when it gets here.
Thanks.

As a clarification, the original Transcend card was a class 6 card. The Adata was a class 10 and I read that some phones won't work with some class 10 cards...

denzelnuke said:
As a clarification, the original Transcend card was a class 6 card. The Adata was a class 10 and I read that some phones won't work with some class 10 cards...
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as always, the best class to use with phones are class 4. their cheap and they work good

well, i was hesitant bout the whole "which classes will the g2 work with" situation.
i bought a pny 16gb class 10 and it works. so i dunno if its more of a this specific phone situation over an entire group of phones.

Bad SD card???

Something is fishy with our SD cards (both my wife and I), since they've somehow seemed to "go bad" about 2 weeks apart. We both have the S3 16GB and I bought two 32 GB SanDisk cards for our phones. Everything seemed fine until about 2 weeks ago when her card went out, then last night my card seems to have gone bad too. All the phone says is it's "safe to remove the card", can't access the card in any way. I currently can't find my adapter to test the micro card in my laptop, but I should at some point. Is anyone else experiencing anything like this with their SD cards?

I had a problem with my 64gb Sandisk card that went bad duing a rom flash. I have EASEUS Partition (can be downloaded free) installed on my PC and the partition on the SD card was missing. I reformated the partition using FAT32 and it has been fine now for over two weeks.
Just a note I now remove my SD card when I flash ROMs. I know it should be safe but it takes a few hours to rebuild 58gb.

This phone fried my 16gb card

What class sdhc is it?
Sent from my SPH-L710

My 64gb SanDisk errored too within the first week. Formatted and working since. Mine stopped working when I changed a battery (yes, the phone was off).
Sent from my SPH-L710 using xda premium

where did you buy the card? also what class is it?

I'm having the same problem with my 32gb sandisk class 4. it was working fine on my LTEVO but the moment I put it on in my GS3 the card went dead.

32GB Class 10 PNY formatted to FAT32 has been flawless for me...and I've used the same sd card in two previous devices (E4GT & Evo LTE)
Sent from my SPH-L710

fujirio said:
where did you buy the card? also what class is it?
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Class 4 SanDisk and I bought them on Amazon. Wasn't a bulk type card without proper packaging either, it arrived in the mail packaged like what you would see in B&M's. In any case, I'm going to need to locate my adapter so I can attempt to format them.

douknownam said:
Class 4 SanDisk and I bought them on Amazon. Wasn't a bulk type card without proper packaging either, it arrived in the mail packaged like what you would see in B&M's. In any case, I'm going to need to locate my adapter so I can attempt to format them.
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If it is screwed like mine then the adapter will do nothing... my card is completely fried

mauricehall said:
If it is screwed like mine then the adapter will do nothing... my card is completely fried
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I find it hard to believe that there is actually a "bad batch" of SD cards from SanDisk... I have a friend that also has an S3 (Verizon) that said his 32 GB card (not sure of the class) went bad as well. It would make more sense that the S3 is somehow making them bad or not recognizing them anymore. However, most of my assumptions may just be wishful thinking.

I had some problems that I think were more CM9/exFAT support related with a 64gb UHS-1 card. I used this to format it and it's been fine since

SanDisk 64GB: After formatting to exFat capacity is 896KB!

I wanted to add files larger than 4GB on my card so I formatted the card to exFat through my PC. Then it reads 896KB... So i format it again using my phone and now i see 59.4GB but its of the "generic hierarchical" file system, and I still can't add files larger than 4GB. Is there anything special I need to do to achieve my goal?

JoJo2211 said:
I wanted to add files larger than 4GB on my card so I formatted the card to exFat through my PC. Then it reads 896KB... So i format it again using my phone and now i see 59.4GB but its of the "generic hierarchical" file system, and I still can't add files larger than 4GB. Is there anything special I need to do to achieve my goal?
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Try for formatting the tool SD Formatter. SDXH microsd cards are having specifications, which are not supported on windows format tool. I a similar problem with formatting, but it come out that my san disk sdxh microsd was defect, so I just got a new one from amazon.

smartxda said:
Try for formatting the tool SD Formatter. SDXH microsd cards are having specifications, which are not supported on windows format tool. I a similar problem with formatting, but it come out that my san disk sdxh microsd was defect, so I just got a new one from amazon.
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Didn't work. I suppose mine is also corrupted.

FRAUDE?
JoJo2211 said:
Didn't work. I suppose mine is also corrupted.
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No, your card is not corrupted, it most likely is a fraud.
These fake cards are made in China and sold as if they were 64 GB. The print on it says it is 64 GB, even if you put them in your computer, the computer states that they are that large. Once you start copying data onto them, the copying fails.
I bought one on eBay from a chinese seller. I´m glad I was refunded by PayPal.
There are many fraudulent sellers who selll these fake cards, so beware! These sellers often have a low feedback and disappear from eBay once people start claiming.
This one is a fake as well, I guess. It´s always the same pattern: they sell very cheap cards and these are all fake.:
http://www.ebay.com/itm/64GB-Micro-...717897?pt=PDA_Accessories&hash=item23269d9909

slk-A4 said:
No, your card is not corrupted, it most likely is a fraud.
These fake cards are made in China and sold as if they were 64 GB. The print on it says it is 64 GB, even if you put them in your computer, the computer states that they are that large. Once you start copying data onto them, the copying fails.
I bought one on eBay from a chinese seller. I´m glad I was refunded by PayPal.
There are many fraudulent sellers who selll these fake cards, so beware! These sellers often have a low feedback and disappear from eBay once people start claiming.
This one is a fake as well, I guess. It´s always the same pattern: they sell very cheap cards and these are all fake.:
http://www.ebay.com/itm/64GB-Micro-...717897?pt=PDA_Accessories&hash=item23269d9909
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How can that be a fake? He doesn't say anywhere that he's selling a SANDISK 64GB card.

Because the card is probo a 4gb card formatted to look like a 64gb card. I've been stung in the past by these thieves and now won't use ebay for any memory. Amazon is the best for memory now with their excellent return policy if there are any problems. My first 64gb SanDisk card was defective and they exchanged it with zero trouble.
The best thing to do with memory cards is to test them as soon as you get them. Fill the card to the brim and check the files play. This way you can prove the card isn't a fake.
Sent from my GT-N7100 using Tapatalk 2

Sandisk Extreme cards? Can't get mine to recognize.

32GB UHS-1. I can't get mine to work, whether formatted fat32 or ntfs via PC. Tablet 8.4 simply doesn't recognize it.
My older sandisk 32GB class 4 disk works just fine.
Anyone else have issues with the UHS rated cards?

redneckmatt said:
32GB UHS-1. I can't get mine to work, whether formatted fat32 or ntfs via PC. Tablet 8.4 simply doesn't recognize it.
My older sandisk 32GB class 4 disk works just fine.
Anyone else have issues with the UHS rated cards?
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According to SanDisk it should be supported fine
http://pct1.sandisk.com/ProductList.aspx?DeviceID=21309
I would check if it's a counterfeit / fake card usually these are sold on eBay, Aliexpress or even some marketplace sellers on Amazon/wherever, some even leak into the retail sites, they look identical packagewise and design wise (sometimes it might have blury paint job, or typos on the packaging) ...
To check if it's fake there is various software for the pc (like H2TESTW or chkflsh ) that will write all the blocks on the card and tell you if it's fake..
btw I have a Sandisk UHS-1 64GB card and it works fine. so chances are you got either a counterfeit or a dud.
Though you could just have a card that went bad, I have had several SanDisk micro sdcards fail (one just went poof, nothing-dead, the other went to read only mode), my card had a lifetime warranty and SanDisk has been great with sending replacements. (you will need a camera to take a close up, (so you can read the serial number on the back of the card)-if you choose to RMA and it's legit)

My Sandisk UHS-1 MicroSD that works fine on my Tab Pro 8.4.
NTFS, while a Windows favorite, can be problematic with Android devices. exFAT is pretty much standard nowadays (especially now that larger capacity cards are common - not supported by FAT32), although the old reliable FAT32 should work fine for 32GB.
Try formatting exFAT on your PC, or formatting on the tablet.
Otherwise you may have a counterfeit (tons of them on eBay as mentioned in the previous response) or simply a defective card.

Android never even had it listed as a device, so even kicking a format via CLI wasn't an option.
Everything tests ok on the PC, but something clearly isn't right. Back it goes.

Found the SDSDQX-032G-A46A for $20 at BestBuy, as well as the SDSDQX-064G-A46A for $40.
I print them both out from the website and drive to the store - where we pull up the website and the pricing has changed back to $80 & $150.. They wouldn't honor the printouts. What a great company. Google cache still has the original price, but the site changed in the time it took me to drive to the store.

redneckmatt said:
Found the SDSDQX-032G-A46A for $20 at BestBuy, as well as the SDSDQX-064G-A46A for $40.
I print them both out from the website and drive to the store - where we pull up the website and the pricing has changed back to $80 & $150.. They wouldn't honor the printouts. What a great company. Google cache still has the original price, but the site changed in the time it took me to drive to the store.
Click to expand...
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try the formatter located here
https://www.sdcard.org/downloads/formatter_4/
are you running an official firmware on the tab pro?
But you are right, even with a bad filesystem it should prompt you to format it - strange, if you have root access you can check dmesg or logcat in terminal to see what's happening when you insert the card.

I did try that formatting utility.
dmesg shows nothing applicable, and logcat does absolutely nothing when that SD is inserted. When putting in my old SD card I get the typical flurry of activity of detecting, mounting, etc.

I bought a Samsung Pro+ 32GB card and that didn't work either. Clean flashed the final CM12 snapshot, still doesn't like either card. Old card (Sandisk class 4) continues to work fine.
Absolutely nothing in logcat for either of the U3 cards. It is as if nothing is being inserted into the tablet at all.
I'm ssh'd into the tablet. No new devices show @ /dev/block with the new cards. Old one has the expected mmcblk1 and mmcblk1p1.

I have Samsung Evo+ 64GB(for model not sure, but Samsung) and it has 95MB/s reading and 90MB/s writing speed and my 8.4 WiFi detected it. But it doesn't fully use those limits(what i want to say is that my SD card has very fast writing speed but when I uploaded 100MB file to the card, it took about 5 seconds to do that) and I don't know is that SD card broken or tablet is bad.,

redneckmatt said:
32GB UHS-1. I can't get mine to work, whether formatted fat32 or ntfs via PC. Tablet 8.4 simply doesn't recognize it.
My older sandisk 32GB class 4 disk works just fine.
Anyone else have issues with the UHS rated cards?
Click to expand...
Click to collapse
I had this happen to me, unfortunately the only way you can fix this, is to give it back to Sandisk (RMA), for replacement. Since your current Card is as they say, pining for the fjords. The good news is that SanDisk support their Cards for up to 10 Years. Which meant more (to me.), when I had spent over 60€'s for it. Today however, you can replace this Card for nearly a Tenner. If anything I can only praise SanDisk's RMA Dept. for being both courteous, and prompt. I think I had to wait a day (or so), to get the confirmation oder. And, likely Six weeks or so for the Return. It was like two years ago now. Thankfully this New Card hasn't died on me in that time. That first Card, though dies on me like six months, after I bought it. The Representative I spoke with, mentioned that a bad batch of Cards had managed to get though, at the time, and that it wouldn't be an issue to just send the dead card back for a new Retail Package. MicroSD + FullSD Adapter.
otyg said:
According to SanDisk it should be supported fine
http://pct1.sandisk.com/ProductList.aspx?DeviceID=21309
I would check if it's a counterfeit / fake card usually these are sold on eBay, Aliexpress or even some marketplace sellers on Amazon/wherever, some even leak into the retail sites, they look identical packagewise and design wise (sometimes it might have blury paint job, or typos on the packaging) ...
To check if it's fake there is various software for the pc (like H2TESTW or chkflsh ) that will write all the blocks on the card and tell you if it's fake..
btw I have a Sandisk UHS-1 64GB card and it works fine. so chances are you got either a counterfeit or a dud.
Though you could just have a card that went bad, I have had several SanDisk micro sdcards fail (one just went poof, nothing-dead, the other went to read only mode), my card had a lifetime warranty and SanDisk has been great with sending replacements. (you will need a camera to take a close up, (so you can read the serial number on the back of the card)-if you choose to RMA and it's legit)
Click to expand...
Click to collapse
First of I doubt, those Tools would be of very much help, if the Card is in fact now dead. When my card died that was it Windows, Linux Phone, or Phablet the Card was non-existant! However the Card should have a Serial Number printed on the Back. (So break out the magnifying glass!), perhaps the tracking was what took the most time before I finally got confirmation.
Just outta interest has anyone tried to shove a 128GB into the Tab-Pro 8.4 to see if it goes?