Develop Bugs

Micro SD card sometimes disappearing

I am using T-mobile Touch Pro 2.
I am quite satisfied with this device except for one problem.
Sometimes (once a day or every other day?) when I turn the device on, the micro sd card is not detectable. The card is in the slot, but the device just cannot find it. (It shows like there is no sd card!)
When I reboot the device or take the micro sd card off and insert again, the device recognize it which makes me very annoyed.
Anyone who has the same problem and the solution?
Many thanks in advance.
FYI, I am using Transcend 8GB micro sd card (class 6.)

The only time I have something like this issue is when I connect the phone to the PC as an external drive, which is by design. Unplugging the phone sets it right again.

Change your MicroSD to SanDisk and you wont have any problems. I have a class 2 16GB and I dont have any problems. If you're worry about the performance, it's pretty fast. using the phone as removable drive it writes at just under 4mb/s, using a usb adapter and the write speed sustains at 8-10mb/s which out performs minimum class 6 standard. All the test was done on a 16gb class 2 with 10gb of badly fragmented files already on the card and writing another 5.5GB into the card. I havent tested read speed but it's faster than write speed.

beckkim said:
I am using T-mobile Touch Pro 2.
I am quite satisfied with this device except for one problem.
Sometimes (once a day or every other day?) when I turn the device on, the micro sd card is not detectable. The card is in the slot, but the device just cannot find it. (It shows like there is no sd card!)
When I reboot the device or take the micro sd card off and insert again, the device recognize it which makes me very annoyed.
Anyone who has the same problem and the solution?
Many thanks in advance.
FYI, I am using Transcend 8GB micro sd card (class 6.)
Click to expand...
Click to collapse
I had the same problem when i first got my sprint pro 2. All you have to do to fix is... using any card reader, copy all the files on your micro sd card to a new folder on your computer. then format the card to fat32. once formatted copy all of your files back onto the card. pop it back in and you should be good to go.. after doing this to mine, my 16g card hasn't disappeared once.

lnando84 said:
I had the same problem when i first got my sprint pro 2. All you have to do to fix is... using any card reader, copy all the files on your micro sd card to a new folder on your computer. then format the card to fat32. once formatted copy all of your files back onto the card. pop it back in and you should be good to go.. after doing this to mine, my 16g card hasn't disappeared once.
Click to expand...
Click to collapse
Thanks a lot!
I will do what you said right away. Hope it will solve the problem

[Q] Installing a new SD card

I have just ordered a 16GB SD card to replace the 8GB one I have.
Do I need to format the new card in the phone before transferring the old data?

You have to format it somewhere to be sure you have correct cluster size.
Try card after that with free SD tools (http://veluscek.amebis.si/index.asp?selektiran=sdtools). There is free market link.
Regards, Ales

I am also purchasing a 16Gb SD card . I was going to format it using the phone. You can unmount the sd card and then format it. Is this not a good idea?
I was also going to copy the contents of my current card to my pc, and then copy it back to my new SD card. I am assuming this is the correct way of doing things.

I just changed to a 16GB Class 2 about 2 weeks ago. I just copied everything from the 8GB to my computer. Put the 16 in, and copied everything from the computer to the 16. Everything is working fine. No formating. I did check the phone before copying to it (16), and the format option was not selectable. It was grayed out, so I just copied.

would upgrading the stock 8gig sd card to a class 6 make any difference?

equlizer said:
would upgrading the stock 8gig sd card to a class 6 make any difference?
Click to expand...
Click to collapse
You'd probably only really notice a big difference when copying files from the PC to the phone. Don't think you'd see much of an improvement when opening anything on the phone.

equlizer said:
would upgrading the stock 8gig sd card to a class 6 make any difference?
Click to expand...
Click to collapse
If I'm not mistaken, mine is already upgraded (so-called) to class 10 from my previous phone. I however do not notice any difference in performance.
I think suddy86 is right. Even if there is, I guess it would be hardly noticed.

I have purchased a class 6 card. It was only a couple of quid more than a class 4. Its a Kingston SD Card, so should be good. Didnt fancy buying an unbranded cheaper card.

Another question that I am curious about. Can a nandroid backup made on a 8GB sd card, be restored on a 16GB card?

i believe you can just copy the contents of the 8gig to the 16gig (unless its a gold card)

SD card problems

I am having problems with my SD card. I used to have a mytouch, and I bought a Sandisk 4GB back then. When I got the S2 back in Decemeber 2011, all i did was format the micro card to work. The S2 shows that its there under Storage, but i have always have difficulties actually using it. You will see that it has some used into it. I can only reach it through USB connection and transfer file that way. However, whenever I use any programs which can be install under SD card, it will not do so.
As you will noticed below i have a problem call App 2 SD Pro, which it will only show both memories with my phone, Storage and USB, which is the same phone memory. By no means, its finding the Micro SD card. Can anyone tell me why is this? This phone is not rooted and i have only 2.3.6.
Thank you in advance.

If you look through your list of folders under /sdcard, your micro sd is the 'external_sd" folder.

Yes that is true. Is under External SD card. My question is, why are some programs, mostly all, having difficulties to find it? and can i have all for example game files, be saved onto my "external SD Card"?

What is the speed of your sd card?
class 2, 4, 6, 8 or 10?
www.rkepowerfitness.com
Sent from my SGH-T989 using XDA

How would i know that? all i can see on the card is, Sandisk 2 in circle, 4GB SDHC micro. Where else can i check? which class is best?

You have a class 2. It has been my experience that when you move an app to sd card, on this phone it uses the internal "USB" storage.

So what can i do to do the opposite? Meaning, using the actual SD card instead of the internal.

dragonfire665 said:
So what can i do to do the opposite? Meaning, using the actual SD card instead of the internal.
Click to expand...
Click to collapse
I'm having the same issue too.... I know what you mean.... I try to back up my phone but it won't... Help please

[Q] Problems with SanDisk MicroSDHC 64GB card

Hi this is my first time posting a question on here so I'm hoping I'm doing this correctly
I recently received a SanDisk Ultra 64GB MicroSDHC card to use in my AT&T Note II phone. When I inserted the external SD card into my phone, everything mounted correctly and functioned right. However, when I tried to transfer my pictures and music into to the external SD card from my internal SD card using the stock app My Files, it would say that everything moved to my external SD card, but when I checked it, nothing was in the external SD card and the files that i had moved from my internal SD card were gone. So I backed up all my files from the internal SD card to my laptop to make sure I don't lose files again.
Afterwards I tried all of these methods to get files to properly into the external SD card:
I tried connected the external SD card directly to my laptop using an adapter and moved the files there
I tried moving files to the external SD card while it was in my phone
I also tried using KIES and KIES Air to move files into my external SD card
The first two methods didn't even have files show in the external SD card. The third method, using KIES and KIES air had files in the external SD card but they were corrupted where I can open my picture and it's a icon of a man of some kind and my music files just wouldn't play.
So I just factor reset my phone hoping that this would fix this problem and I haven't tried moving files yet. I'm hoping that perhaps it was an app that was conflicting with the external SD card.
I know that my external SD card is not fake because it came in a legitimate package and I also ran a software (that I can't remember the name of) that puts in data in the external SD card until it fills up and reads the data to see how much actually went in.
Could anybody tell me what the problem is and how I can fix it? I can't go back to the store and exchange it because it was a gift and there's no receipt. Thank you so much for your help.

gnabffej said:
Hi this is my first time posting a question on here so I'm hoping I'm doing this correctly
I recently received a SanDisk Ultra 64GB MicroSDHC card to use in my AT&T Note II phone. When I inserted the external SD card into my phone, everything mounted correctly and functioned right. However, when I tried to transfer my pictures and music into to the external SD card from my internal SD card using the stock app My Files, it would say that everything moved to my external SD card, but when I checked it, nothing was in the external SD card and the files that i had moved from my internal SD card were gone. So I backed up all my files from the internal SD card to my laptop to make sure I don't lose files again.
Afterwards I tried all of these methods to get files to properly into the external SD card:
I tried connected the external SD card directly to my laptop using an adapter and moved the files there
I tried moving files to the external SD card while it was in my phone
I also tried using KIES and KIES Air to move files into my external SD card
The first two methods didn't even have files show in the external SD card. The third method, using KIES and KIES air had files in the external SD card but they were corrupted where I can open my picture and it's a icon of a man of some kind and my music files just wouldn't play.
So I just factor reset my phone hoping that this would fix this problem and I haven't tried moving files yet. I'm hoping that perhaps it was an app that was conflicting with the external SD card.
I know that my external SD card is not fake because it came in a legitimate package and I also ran a software (that I can't remember the name of) that puts in data in the external SD card until it fills up and reads the data to see how much actually went in.
Could anybody tell me what the problem is and how I can fix it? I can't go back to the store and exchange it because it was a gift and there's no receipt. Thank you so much for your help.
Click to expand...
Click to collapse
try formatting to fat32 type and chk as it must be ntfs now

shhbz said:
try formatting to fat32 type and chk as it must be ntfs now
Click to expand...
Click to collapse
right I forgot to mention that I reformatted it on my phone as well as using the default Windows 7 format function as well as SD card formatter

gnabffej said:
right I forgot to mention that I reformatted it on my phone as well as using the default Windows 7 format function as well as SD card formatter
Click to expand...
Click to collapse
well seee if it works on other phone if not then sent it back to sandisk service center they dont need any proof of purchase just the sd card packet pic will do as proof as it comes with lifetime warranty , just sent them a mail and report if its faulty and they will ask u to send the sd card back to sandisk center and they will send u a new sd card :good:
if they ask for a sd card no just chk your sd card back it written over there and not on the package as the org number they need is available in sd card back

gnabffej said:
Hi this is my first time posting a question on here so I'm hoping I'm doing this correctly
I recently received a SanDisk Ultra 64GB MicroSDHC card to use in my AT&T Note II phone. When I inserted the external SD card into my phone, everything mounted correctly and functioned right. However, when I tried to transfer my pictures and music into to the external SD card from my internal SD card using the stock app My Files, it would say that everything moved to my external SD card, but when I checked it, nothing was in the external SD card and the files that i had moved from my internal SD card were gone. So I backed up all my files from the internal SD card to my laptop to make sure I don't lose files again.
Afterwards I tried all of these methods to get files to properly into the external SD card:
I tried connected the external SD card directly to my laptop using an adapter and moved the files there
I tried moving files to the external SD card while it was in my phone
I also tried using KIES and KIES Air to move files into my external SD card
The first two methods didn't even have files show in the external SD card. The third method, using KIES and KIES air had files in the external SD card but they were corrupted where I can open my picture and it's a icon of a man of some kind and my music files just wouldn't play.
So I just factor reset my phone hoping that this would fix this problem and I haven't tried moving files yet. I'm hoping that perhaps it was an app that was conflicting with the external SD card.
I know that my external SD card is not fake because it came in a legitimate package and I also ran a software (that I can't remember the name of) that puts in data in the external SD card until it fills up and reads the data to see how much actually went in.
Could anybody tell me what the problem is and how I can fix it? I can't go back to the store and exchange it because it was a gift and there's no receipt. Thank you so much for your help.
Click to expand...
Click to collapse
welcome to the screwedup 64 club just throw it in the bin. i had the same 64gig card n been trying for last 10months to format with every partition wizard to no avail.finally smashed to smitherings with a hammer. could not exchange it cos i threw away the box n receipt n they wont replace it but a friend got his changed 3 times before he got a working one.lesson learnt just stick with 32gig sd no such problem

shhbz said:
well seee if it works on other phone if not then sent it back to sandisk service center they dont need any proof of purchase just the sd card packet pic will do as proof as it comes with lifetime warranty , just sent them a mail and report if its faulty and they will ask u to send the sd card back to sandisk center and they will send u a new sd card :good:
if they ask for a sd card no just chk your sd card back it written over there and not on the package as the org number they need is available in sd card back
Click to expand...
Click to collapse
Yeah my I threw my package away about a week ago which I completely regret now

gnabffej said:
Yeah my I threw my package away about a week ago which I completely regret now
Click to expand...
Click to collapse
u still dont need to regret just mail sandisk and iform them abt the issue they will ask you to send the damaged chip and they refund it , for me they did not ask for any proff

Internal memory formatted SD card issues

I've an Samsung evo+ 256GB SD card formatted as internal storage in my HTC 10 for almost 2 years now.
2 months ago I decided to upgrade to a Samsung evo+ 256GB v2, with slightly better speeds. I simply cloned the old SD to the new one.
Everything was always fine, worked great till yesterday.
I had some weird stutters while playing music and then I noticed the UI was also getting stutterish.
Went to bed, charged my phone as I usually do. When I woke up and checked my mail the phone just froze and rebooted.
After reboot the phone told me the SD card was missing
I decided to shut down the phone and examine the SD card but the phone just got stuck shutting down, I had to force reboot and shutdown again.
I tested the SD by a full byte by byte read in Western Digital diagnostic tool for harddrives to see if my SD was broken, but it was fine, no errors.
I popped the SD back in my phone, started and the SD mounted fine, no issues so far.
Could the file system be corrupt? If it is, how do I fix it?
I could try and move the data to an external drive and reformat the SD, I've a USB 3 OTG cable. But I'm not sure how to do that either.
Will Android move the data for me automatically when removing the SD card as internal storage?

Stutters continued today unfortunately, especially when doing a SD benchmark.
I decided to use clonezilla and do a clone of the card to another one to see if that improves anything.
On the old SD I had 72MB/s read and 20MB/s write according to A1 SD bench
Internal storage 225MB/s read and 41MB/s write
On the cloned SD I have 74MB/s read and 19MB/s write
The difference is that the cloned SD is a Samsung evo+ 256GB v1 and the old one a Samsung evo+ 256GB v2
I don't get it though, doing a benchmark on a PC shows 90MB/s read and 80MB/s write.

I advice you to check media files. I had lived same problem. I found solution by chance . I attached sd card to my notebook to backup dcim and music folder. While copying the files, suddenly copy process stopped on a not special file. I removed the sd, re attached and deleted that file before continue to copy. When copying finished, i attached the sd card to phone... Whola... Without formatting or doing nothing extra the card started to work as expected