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Old May 19th, 2013, 12:04 PM   #1 (permalink)
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Default S4 9505 keeps unmounting the SD card

Its been fine up till now which is only a week lol but I starting using the video and filming today and since then it keeps coming up every now and then that the card is unmounting and then preparing the card??

I just took it out and blew in to the slot to make sure its clean and 5 mins later it did it again. Dodgy phone??

Card was fine in the S3. Should I use the 'format card' option??

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Old May 19th, 2013, 03:15 PM   #2 (permalink)
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got my sandisk 32gb ultra and when i play music my s4 unmounts my card too, so i put in a spare 2gb kingston card and the problem disappears.(runs spot on).
Reading up on the net, it seems some sandisk 32gb cards had a faulty batch so i have ordered a sammy 32gb card.
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Old May 19th, 2013, 04:07 PM   #3 (permalink)
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Originally Posted by shaunuk View Post
got my sandisk 32gb ultra and when i play music my s4 unmounts my card too, so i put in a spare 2gb kingston card and the problem disappears.(runs spot on).
Reading up on the net, it seems some sandisk 32gb cards had a faulty batch so i have ordered a sammy 32gb card.
It is the same card I have. Will get another.
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Old May 19th, 2013, 04:29 PM   #4 (permalink)
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Sandisk sure do have allot of faulty batches out there, I think the safest bet is to avoid them and try some other brands.
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Old May 19th, 2013, 04:45 PM   #5 (permalink)
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What is a good reliable one to get in 32gb??

I always thought San Disk were ok???
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Old May 19th, 2013, 06:46 PM   #6 (permalink)
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I got a 64gb scandisk and it keeps telling me it's damaged every other week.
Unmounting and remounting it solves the problem.
I also bought scandisk because I expected quality.
I contacted them and they told me to format it and if the issue persists I will get a replacement. We'll see.....
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Old May 19th, 2013, 11:14 PM   #7 (permalink)
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Quote:
Originally Posted by jamin_00 View Post
What is a good reliable one to get in 32gb??

I always thought San Disk were ok???
I thought there were supposed to be a good make too, I have ordered an original Samsung one now, will test it out when it comes but from what I've read there's should be no issues with it.
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Old May 20th, 2013, 01:08 PM   #8 (permalink)
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I had the same problem with a 32 gig Sandisk card. It would randomly unmount and then mount again. I returned it to Amazon and got a Samsung 32 gig card and it is working flawlessly so far.
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Old May 20th, 2013, 03:20 PM   #9 (permalink)
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Originally Posted by drebit View Post
got a Samsung 32 gig card and it is working flawlessly so far.

Thats what i wanna hear !

I thought there was a problem with my phone to start with, till i tested another card.
Just need my sammy 32 gig to come now.
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Old June 12th, 2013, 07:03 AM   #10 (permalink)
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Default and the 64gb

I've the sandisk 64gb card and its started doing the same thing since I copied 20gb of media files onto it. Also the phone heats up at the back right where the micro sd card is.
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Old June 12th, 2013, 09:09 AM   #11 (permalink)
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I have had two bad SanDisk cards, one 32GB and one 64GB. The latter I bought for my S4 and almost immediately had the unmounting issue. Sent it back and bought a Samsung. It's been about two weeks now and I've had absolutely no problems. I will never buy a SanDisk card again.
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Old June 12th, 2013, 02:16 PM   #12 (permalink)
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If you have a sandisk card go bad, call them. They know about the issue and I have read reports about people getting replacements with no hassles...
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Old September 25th, 2013, 11:19 AM   #13 (permalink)
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Originally Posted by jamin_00 View Post
Its been fine up till now which is only a week lol but I starting using the video and filming today and since then it keeps coming up every now and then that the card is unmounting and then preparing the card??

I just took it out and blew in to the slot to make sure its clean and 5 mins later it did it again. Dodgy phone??

Card was fine in the S3. Should I use the 'format card' option??

Found a solution for it. i got the same problem with my 64gb sandisk micro sd card, what i did to fix the issue is as follows.

1) format your 64gb micro sd card with a card reader to NTFS (fat32 does not work) using MiniTool Partition Wizard Home Edition 7.8(its a bit tricky process and you should have a windows pc with card reader slot)

2) then just insert the micro sd card into your S4, immediately you should get a message saying that its a blank card and your S4 needs to format it.

3) proceed with format on your S4 and then there you go everything should work fine.

after i followed the above method I never saw the unmount issue again on my S4, its working like a charm.

let me know if you have any questions.
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Old September 27th, 2013, 06:51 AM   #14 (permalink)
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Ugg, I have the Sandisk Ultra 64GB and I'm experiencing the random SD card problems. This is frustrating cause it causes errors to the apps set on the SD. Can I return this SD after 3 months? Or is the re-formatting a guarantee fix?
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Old September 27th, 2013, 09:14 AM   #15 (permalink)
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Quote:
Originally Posted by CyberWinter View Post
Ugg, I have the Sandisk Ultra 64GB and I'm experiencing the random SD card problems. This is frustrating cause it causes errors to the apps set on the SD. Can I return this SD after 3 months? Or is the re-formatting a guarantee fix?
Reformatting did nothing for me.

Whether you can return it will depend on where you bought it. Costco, yes. Others. ?????
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Old October 2nd, 2013, 09:55 AM   #16 (permalink)
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I want to take back what i said, formatting did not worked well and after a couple of days everything went south again.

spoke with SANDISK they said its a problem with the memory card, so they are replacing with a new one. They sent me RMA with free UPS shipping label.

As far as i know all sandisk microsd cards have 5 Years Replacement Warranty. i got mine back in January 2013 and they are replacing mine.

Interestingly I am using a OLD 64gb Micrsd card which i used in my Galaxy Note I is working good.

And my battery usage is much much better now. when i was using my BAD sd card, Media server was using about 80% of my S4 Phone battery so i had to frequently charge my phone (two to three times daily).

but now after started using my Old Micro SD Card Media Server Battery usage is only 2% and now i am getting about 22 to 24 hours on full charge.

hope this helps, replace your Micro SD Cards and life will be good
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Old November 3rd, 2013, 02:07 AM   #17 (permalink)
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Quote:
Originally Posted by kurivellam View Post
I want to take back what i said, formatting did not worked well and after a couple of days everything went south again.

spoke with SANDISK they said its a problem with the memory card, so they are replacing with a new one. They sent me RMA with free UPS shipping label.

As far as i know all sandisk microsd cards have 5 Years Replacement Warranty. i got mine back in January 2013 and they are replacing mine.

Interestingly I am using a OLD 64gb Micrsd card which i used in my Galaxy Note I is working good.

And my battery usage is much much better now. when i was using my BAD sd card, Media server was using about 80% of my S4 Phone battery so i had to frequently charge my phone (two to three times daily).

but now after started using my Old Micro SD Card Media Server Battery usage is only 2% and now i am getting about 22 to 24 hours on full charge.

hope this helps, replace your Micro SD Cards and life will be good
Ok. I'll get mine replaced again. Its a pita lol
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Old December 30th, 2013, 04:26 AM   #18 (permalink)
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Got it replaced and it was fine for a while. Now keeps doimg again every so often. Im gonna geab the sasumg one amd chuck this In an adapter and use it jn the video camera as its fine when I have tried it in that before.
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Old December 31st, 2013, 12:01 AM   #19 (permalink)
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Quote:
Originally Posted by zoxxo;[URL="tel:5899939"
5899939[/URL]]If you have a sandisk card go bad, call them. They know about the issue and I have read reports about people getting replacements with no hassles...
Ya, I started having problems with my, SanDisk 32GB SD card, a week ago unmounting in my S4. Per help from others in this forum, I contacted SanDisk about my problem and they sent me a free shipping label to send my card to them and they will send me a new card. (I hope the problem is fixed). Mine went bad when I was recording videos and taking pictures for Christmas.
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Old December 31st, 2013, 01:44 AM   #20 (permalink)
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Quote:
Originally Posted by dogdaysunrise View Post
I got a 64gb scandisk and it keeps telling me it's damaged every other week.
Unmounting and remounting it solves the problem.
I also bought scandisk because I expected quality.
I contacted them and they told me to format it and if the issue persists I will get a replacement. We'll see.....
mb it doesnt support?

i've been noticing scan disk card problems lately. Not only here but other forums too.
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