Develop Bugs

SD Card Removed Unexpectedly when Connected to PC?

I've looked around a bit, and correct me if I'm wrong, but it doesn't seem like anyone else has my problem.
Long story short, I've got a 8GB Class 4 Sandisk SD card, and it worked well for the first few weeks. However, as of recently, anytime I connect to my PC in any way and try to transfer files over using USB or Bluetooth, it fails due to the unexpected removal of my SD Card. This is without me physically removing it of course.
I've tried formatting using default settings, and I don't know what else to try... can anyone shed some light here?

Have you tried another SD?
If you have and problem is still there, I would try a factory reset.
If after all this effort your problem is still not resolved, then i would say a call to HTC is your best solution as it could be hardware related.
Oh couple more things:
Try a different USB cable.
Try a different port or pc.

Okay, I tried it with the stock microSD 2gb, and I didn't get this problem ... basically it just means I've got a bad 8gb?

shiverxiii said:
Okay, I tried it with the stock microSD 2gb, and I didn't get this problem ... basically it just means I've got a bad 8gb?
Click to expand...
Click to collapse
Yup, it happens sometimes.
Sent from my HTC_A510c using Tapatalk

Be aware there has been countless reports of fake sandisk SD cards being sold everywhere including eBay and Amazon's market place.
So before purchasing a new card Google how to spot a fake sandisk and it should give you an idea of what to look for or not.

I had also faced this situation ...i changed with class 2...nw it working like charm...
Sent from my HTC Wildfire S using XDA App

I purchased mine from London Drugs, not sure if you know it, but it is a trustworthy place so I doubt my card is fake.
One more thing for clarification, do you think that setting the phone so that it auto installs to SD could have some effect? I set mine up like that due to the lack of internal storage. Thanks for the responses!

i didnt have this issues before hope u can fix it

shiverxiii said:
I purchased mine from London Drugs, not sure if you know it, but it is a trustworthy place so I doubt my card is fake.
One more thing for clarification, do you think that setting the phone so that it auto installs to SD could have some effect? I set mine up like that due to the lack of internal storage. Thanks for the responses!
Click to expand...
Click to collapse
Auto install to SD should have no effect mate.
Also the fake card situation - well they have been sold by legitimate sellers believing them to be genuine, not trying to deceive customers.
Apparently the market has been flooded with them.
I read about it a couple of months back.
Not saying yours is fake, was just saying your average user wouldn't notice at all.

External SD card disappeared...

So I woke up this morning, phone says SD card unplugged, please insert new...knowing that I obviously did not remove my external sd card I then proceed to check
Settings, Storage --> (nothing shows up)
Boot into recovery --> can't mount external SD card
plug it into PC --> nothing shows up
So now the question is, do I have a bad/dead micro SD card or else?
I am on CM10 which is updated nightly, that might have something to do with the SD card, I dont know.

Edit-- missed where you said you already tried directly from computer.
Might just be a dead card.

Unless it is just not being assigned a drive letter on the pc, the card is toast. If you are using windows you can got to the disk management snap in from the administrative tools and see if it is listed at all, if it doesn't show there it is fubar. Easiest way to get there is right click computer, manage, disk management. For linux or mac im sure there is a similar tool but i couldn't tell how to get there or use it.

Which recovery do you have? Same thing happened to me on 6.0.1.4 Touch. Computer still saw the card, so i pulled everything off the card, reformatted with the computer, then changed recovery. Phone saw it after that and no more problems since.

dntesinfrno said:
Unless it is just not being assigned a drive letter on the pc, the card is toast. If you are using windows you can got to the disk management snap in from the administrative tools and see if it is listed at all, if it doesn't show there it is fubar. Easiest way to get there is right click computer, manage, disk management. For linux or mac im sure there is a similar tool but i couldn't tell how to get there or use it.
Click to expand...
Click to collapse
Yup, nothing shows up under disk management =/
Jeez, i thought these sd cards are suppose to be reliable. Mine is only 2 months old...

Whanksta said:
Yup, nothing shows up under disk management =/
Jeez, i thought these sd cards are suppose to be reliable. Mine is only 2 months old...
Click to expand...
Click to collapse
Thats just the nature of flash memory, eventually it does go bad and unlike mechanical drives which often give plenty of warning of impending failure flash rarely does. Granted 2 months is obviously not acceptable it could be just a freak thing or maybe just an inferior brand. It is also highly susceptible to static discharge, especially in a SD card type format where the pins are exposed. Although possible, i doubt a static shock happened inside the phone but it could have possibly been damaged and just took a while to completely fail.

I used this to format my 64gig chip
http://www.ridgecrop.demon.co.uk/guiformat.htm
Phone: SAMSUNG-SGH-I747
ICS 4.04
KT747-Kernel-TW-ICS-10-09-2012
l747UCLH9
Ariel 2.10
cm 6.0.1.4 touch

No way I had the same issue two days ago.. My card is only 1 month old. Im ob stock 4.0 n nothing show up in the pc as well.. What should I do?
Sent from my SGH-I747M using xda app-developers app

hectorgardella said:
No way I had the same issue two days ago.. My card is only 1 month old. Im ob stock 4.0 n nothing show up in the pc as well.. What should I do?
Sent from my SGH-I747M using xda app-developers app
Click to expand...
Click to collapse
I purchased SanDisk 32gb from Amazon
http://www.amazon.com/SanDisk-Mobil...1350968148&sr=8-1&keywords=micro+sd+card+32gb
apparently, if you choose amazon frustration free box you might get a ****ty micro sd card cuz it's actually not made by sandisk

hectorgardella said:
No way I had the same issue two days ago.. My card is only 1 month old. Im ob stock 4.0 n nothing show up in the pc as well.. What should I do?
Sent from my SGH-I747M using xda app-developers app
Click to expand...
Click to collapse
Get a new card...i would also check on any warranty offered by the manufacturer, that goes for OP too. Depending on the brand there may be a 1 year or even lifetime warranty, some of the lesser brands might not have a warranty at all. Although i haven't followed my own advice in this category as the last 2 16 GB micro SD's i've purchased have been fairly cheap class 10's, you more often than not get what you pay for. I would also recommend going for the class 10 cards, not only do they have the fastest transfer speeds (and maybe because of this) they seem to be more reliable then their slower cousins.

dntesinfrno said:
Get a new card...i would also check on any warranty offered by the manufacturer, that goes for OP too. Depending on the brand there may be a 1 year or even lifetime warranty, some of the lesser brands might not have a warranty at all. Although i haven't followed my own advice in this category as the last 2 16 GB micro SD's i've purchased have been fairly cheap class 10's, you more often than not get what you pay for. I would also recommend going for the class 10 cards, not only do they have the fastest transfer speeds (and maybe because of this) they seem to be more reliable then their slower cousins.
Click to expand...
Click to collapse
I got mine from ncxi.. Kingstone class 10 64giga****s.. I think I still have warranty.. Never had this problem before with Sd cards
. I got 4 so far from this store

hectorgardella said:
I got mine from ncxi.. Kingstone class 10 64giga****s.. I think I still have warranty.. Never had this problem before with Sd cards
. I got 4 so far from this store
Click to expand...
Click to collapse
I got mine from SanDisk loL, i would think that's reputable enough.

hectorgardella said:
I got mine from ncxi.. Kingstone class 10 64giga****s.. I think I still have warranty.. Never had this problem before with Sd cards
. I got 4 so far from this store
Click to expand...
Click to collapse
Although i've never had one of their SD's, Kingston is one of the top tier memory companies and carry lifetime warranties on most (if not all) of their products. At the very least i would expect a year.
Whanksta said:
I got mine from SanDisk loL, i would think that's reputable enough.
Click to expand...
Click to collapse
In my experience SanDisk is considered a cheapo brand but they have been around long enough to have overcome that reputation. I would imagine they also have a warranty program although i can't speak from personal experience, definitely worth checking into.

Im quite sure that my kingstone sd card is genuine..
Any possibilities that my S3 killed it?
...
Sorry for my bad english n grammar lol

dntesinfrno said:
Although i've never had one of their SD's, Kingston is one of the top tier memory companies and carry lifetime warranties on most (if not all) of their products. At the very least i would expect a year.
In my experience SanDisk is considered a cheapo brand but they have been around long enough to have overcome that reputation. I would imagine they also have a warranty program although i can't speak from personal experience, definitely worth checking into.
Click to expand...
Click to collapse
I don't think SanDisk is a cheapo brand since they have been making great cards for a long time. They have a great warranty program. They will replace anything within a year for sure. I had one that you couldn't read the serial number on so they still replaced it.
SanDisk has a problem by being the most well known microsd, they are faked by chinese companies all the time and those fakes look just like the real ones. Therefore, you buy a fake, paying real prices, that looks real, and you blame SanDisk. I think that was what happened in my experience with a dead card, and they still replaced it.

Wait a Minute same thing happened to me just right NOW!
I saw my phone screen showed that MicroSD was removed and them I reinserted it on the phone and nothing nothing
Put it on the PC it shows Drive letter but cannot format
OMG this is CM10 Damaging microSD Cards? My sd card was 32gb San disk class 10 full of data
someone can help?

maxrdlf95 said:
Wait a Minute same thing happened to me just right NOW!
I saw my phone screen showed that MicroSD was removed and them I reinserted it on the phone and nothing nothing
Put it on the PC it shows Drive letter but cannot format
OMG this is CM10 Damaging microSD Cards? My sd card was 32gb San disk class 10 full of data
someone can help?
Click to expand...
Click to collapse
Im on stock room ics

maxrdlf95 said:
Wait a Minute same thing happened to me just right NOW!
I saw my phone screen showed that MicroSD was removed and them I reinserted it on the phone and nothing nothing
Put it on the PC it shows Drive letter but cannot format
OMG this is CM10 Damaging microSD Cards? My sd card was 32gb San disk class 10 full of data
someone can help?
Click to expand...
Click to collapse
Use device manager to format.

thacounty said:
Use device manager to format.
Click to expand...
Click to collapse
I cannot format it on anything I cant on Mac I cant on PC and phone doesnt detect it ..
Now I loose the data I'm bad for that but how Can i loose the card also fail!

maxrdlf95 said:
I cannot format it on anything I cant on Mac I cant on PC and phone doesnt detect it ..
Now I loose the data I'm bad for that but how Can i loose the card also fail!
Click to expand...
Click to collapse
You can't just format it from "My Computer". You will have to go into device manager and find it, then format it that way. Otherwise it will not work.

[Q] Anyone have problems with 64GB SanDisk SDXC card?

I have a Bell Note 2 and I recently bought the 64GB SanDisk Ultra microSDXC UHS-I card. Since using it, I noticed that (when installed) the Device Status of the phone changes to Modified and I can't check/download Android updates from Samsung. Also, the Samsung Video Hub app won't let me use external storage to save movies (which I could do using my old 32GB PNY card). The card seems to read/write okay though.
I contacted Samsung by email, the reply was laughable (solution was for a different issue on a different phone). I also contacted SanDisk and they suggested reformatting to FAT32 using a utility from www.sdcard.org. I haven't tried this yet but I know that FAT32 will reduce file sizes to 4GB. I don't know if it will have an effect on the read/write speeds of the card.
Just wondering if anyone else using this card was experiencing the same issues. If you haven't checked, maybe you might want to.

I miss the build quality, sleekness, and how quick the battery would charge/how slow it would drain.

outkast22 said:
I miss the build quality, sleekness, and how quick the battery would charge/how slow it would drain.
Click to expand...
Click to collapse
Sorry, you lost me there....

I've been looking at that same card. I'm definitely interested to see how this resolves for you.
-----
I would love to help you, but help yourself first: ask a better question
http://www.catb.org/~esr/faqs/smart-questions.html

I just bought one.I formatted to fat32 using a third party formatter from the web called eause formatter.Everything is working good now on mine.

NaughtyBot said:
Sorry, you lost me there....
Click to expand...
Click to collapse
He posted that twice already in the "What iPhone users miss" thread...

No problems here. It even worked in my ancient Desire Z, TF101, and HTC Raider
Sent from my SGH-I317M using xda premium

Somehow I had my 64gb sndisk hot corrupt. I had to reformat.
Sent from my SAMSUNG-SGH-I317 using xda premium

Well, I tried to do what the SanDisk guy told me but the formatting utility that he mentioned doesn't have the option to change file formats. Started out as exFat, still exFat. Some of you have mentioned using other formatting/partitioning utilities - the folks at www.sdcard.org say the following:
"The SD Formatter was created specifically for memory cards using the SD/SDHC/SDXC standards. It is strongly recommended to use the SD Formatter instead of formatting utilities provided with operating systems that format various types of storage media. Using generic formatting utilities may result in less than optimal performance for your memory cards.
The SD/SDHC/SDXC memory cards have a "Protected Area" on the card for the SD standard's security function. The SD Formatter does not format the "Protected Area". Please use appropriate application software or SD-compatible device that provides SD security function to format the "Protected Area" in the memory card."
So there you go.

I am using the card with the t-Mobile version and it working fine.
Sent from my SGH-T889 using Tapatalk 2

Works without any problems in mine.

The weird thing is that it starts out okay and only shows up after I've reloaded all my apps. Even then, I can still read and write to the card. I just can't get updates because it says that my phone is modified. I can't see how an app would cause it. There are no side-loaded apps. And it doesn't happen with my 32GB card.

Just a quick update for anyone who might be wondering....
After making this thread, I went to my local BestBuy and bought another SanDisk microSDXC that was exactly the same as the one I had. I put the same files on the card and the phone did exactly the same thing. I did discover however that the problem shows up when I reboot the phone with the card installed but doesn't show up (at least not right away) when I unmount/hotswap/remount the card with the phone left on.
Then I took the card to the BellAliant store where I bought the phone and had them try the card in a brand new phone. Same problem on the new phone.
Nothing funky on the card, just my songs (transferred using DoubleTwist AirSync) and my photos (transferred via PC). This card hasn't been reformatted and my phone hasn't been rooted.
So I don't know what's going on, if its only a problem with Galaxy Note 2's that are being sold in this area. I can't believe that no one else is having this issue.
Anyway, I put in a support ticket with Samsung (again), not expecting anything new. The Samsung tech that I spoke with did say that only TWO (I think) 64GB microSDXC cards were tested and approved for the Note 2 and that the SanDisk was one of them. Also, the girl at the BellAliant store said that they were told that the phone only worked with a TOTAL of 64GB (internal + external) but I KNOW she was wrong about that. Just some of the things you hear when trying to troubleshoot something that no one seems to have an answer for....

iMHO you really should format it fat32 and retest.
-- other suggestions for tools --
Might search for mini partition tool or gparted live cd. I've used the gparted live cd to partition my 64gb sandisk previously for dual booting my og atrix.
-- I'm sure there are better suggestions on tools, but I strongly suggest converting it to fat32 before further testing / actions.

The Note II ONLY supports FAT32
When I got my new 64GB SanDisk card I powered off the phone. Pulled the back cover and replaced my 32Gb with the new 64GB micro SD card right out of the packaging and then replaced the cover and powered it up. Phone recognized it and accepted file transfers to it without issue. No problems to date and I have been using it for 3 weeks without issue.

ExFAT works fine with my note 2 on perseus. Doesn't play well with note2core though
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

If the Note II only supports fat32, then someone needs to tell my note because it's working fine with my card on exfat. stock kernel and all.

I too have bell note 2 with 64gb sandisk and everything is fine. I jusy put the card in the phone and formated with phone. Its exfat btw.
I suggest u to format the card with phone so it can format with the appropriate fike system.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

warfanax said:
I too have bell note 2 with 64gb sandisk and everything is fine. I jusy put the card in the phone and formated with phone. Its exfat btw.
I suggest u to format the card with phone so it can format with the appropriate fike system.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2
Click to expand...
Click to collapse
See, that's the strange thing. The card DOES "work" - it formats fine and I can transfer files to and from it. The ONLY problem is that, when I put my files on it, the status of my phone changes to "modified". Then, when I go to updates, it won't even try to connect to the servers, just tells me that my phone is modified and that updates are not available. As I mentioned above, I've duplicated the problem with two identical cards and in two different phones (one of which was in-store, brand new).
I realize that I can just take the card out of the phone when I know an Android update is available to download, I just don't always know when updates are available. In either case, doesn't seem like it should act that way. And I didn't want to force-format the card to FAT32 with a 3rd party format utility because that would destroy the "protected partition" on the card and void the warranty (those 64GB cards are expensive).
I understand that I might just have to live with this, it's just odd that no one else is experiencing it. Think I'm going to let this thread die. Folks on XDA tend to not like re-reading the same thing over and over. Thanks to all who replied.

NaughtyBot said:
See, that's the strange thing. The card DOES "work" - it formats fine and I can transfer files to and from it. The ONLY problem is that, when I put my files on it, the status of my phone changes to "modified". Then, when I go to updates, it won't even try to connect to the servers, just tells me that my phone is modified and that updates are not available. As I mentioned above, I've duplicated the problem with two identical cards and in two different phones (one of which was in-store, brand new).
I realize that I can just take the card out of the phone when I know an Android update is available to download, I just don't always know when updates are available. In either case, doesn't seem like it should act that way. And I didn't want to force-format the card to FAT32 with a 3rd party format utility because that would destroy the "protected partition" on the card and void the warranty (those 64GB cards are expensive).
I understand that I might just have to live with this, it's just odd that no one else is experiencing it. Think I'm going to let this thread die. Folks on XDA tend to not like re-reading the same thing over and over. Thanks to all who replied.
Click to expand...
Click to collapse
Why do you think formating an sd card with fat32 would void the warranty? Never heard such thing before. You can format any file system you want.

[Q] my 64gb card = 2tb?

So I have a 64gb sandisc u1 card, in partition magic it shows the usable space as a partition in between a small set of unpartitioned space and a large set.
All space = 2tb
Thoughts?
Explinations?
Exploits?
Sent from my SGH-T889

sounds like you might have picked up a fake card chinese formatted.. i'd backup anything you have on it, delete all partitions and redo it. see what it comes up with then..

No, its from best buy. I dont buy transflash off ebay. Its 59gb in compasity currently. I didnt do any mods. Im asking about possable mods, or as I have infered, that theirs nothing. It shows 59gb in windows. Only partition magic shows 2tb full withh all the rest of the area being unpartitioned and unformated space
Sent from my SGH-T889

What are you using to see this 2TB? A PC? Format the card in your phone. As to hacks/mods that would cause these mods.
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.

madman604 said:
What are you using to see this 2TB? A PC? Format the card in your phone. As to hacks/mods that would cause these mods.
Sent from a phone that's 2 Note-worthy, via XDA Premium HD app.
Click to expand...
Click to collapse
His post above yours says what he's using. Partition magic. Either way, I'm guessing the issue is the software if Windows shows the true value. If you want a safe piece of mind, back up the data, and exchange it best buy. If the new one reads the same issue, then it's the software. Cause no way 2TB would fit a microsd.
Sent from my SGH-T889

I dont belive its the software because other trans flash didnt have this issue.
Yes pc
I dont need help formatic the card its working just fine at stock settings currently.
Sent from my SGH-T889

Have you tried using the software to read other 64GB cards? Either way, if everything is working fine, and you download other software and everything but Partition magic reads it at 64GB, then just keep it.

Thats not realy what I was asking tho
Sent from my SGH-T889

prepaidguy9081 said:
Thats not realy what I was asking tho
Sent from my SGH-T889
Click to expand...
Click to collapse
It's not a 2TB card. As people have answered you, either the hardware is borked, or the software is confused with that card (make, model, when it was made, etc). Just because other cards have worked fine doesn't mean the software isn't confused. Just because you bought it from BestBuy doesn't mean the card is good.
People asked about eBay because many of us have been burned buying a card that is formatted wrong so it looks like it has a higher capacity than it really has. Either the software you are using (that exact edition, set up, installation) is giving you possible options to make computers think it is higher capacity (which will not do you any good), or that card could be flawed which is confusing the software into being unsure of it's total capacity.
The only exploit you could do is try using the 2TB formatting and showing people your super cool 2TB card (which would destroy files that were placed in non existent sectors). I don't recommend doing that, as it wastes the card.
I haven't really said anything that anyone else hasn't been talking about, but these seem to answer anything you may have been asking (since technically you never formed a full question). So I think your question was answered, you may have just not asked what you meant to.

Correct, but I do not belive the card is flawed. I agree with the rest though. And if my question dosent seem fully developed I appologise
Sent from my SGH-T889

Question about this sd card..

will this http://www.amazon.com/dp/B00IVPU7AO/?&ascsub&tag=gizmodoamzn-20&ascsubtag=[referrer|www.google.com[type|link[postId|1662669135[asin|B00IVPU7AO[authorId|5727177402741770316[type|mod-title be okay with our phones?
currently have the sandisk ultra 64gb and i have tons of "unexpected removal" problems with it..

masri1987 said:
will this http://www.amazon.com/dp/B00IVPU7AO/?&ascsub&tag=gizmodoamzn-20&ascsubtag=[referrer|www.google.com[type|link[postId|1662669135[asin|B00IVPU7AO[authorId|5727177402741770316[type|mod-title be okay with our phones?
currently have the sandisk ultra 64gb and i have tons of "unexpected removal" problems with it..
Click to expand...
Click to collapse
I've been using the same card for a couple of weeks now with nothing negative to report about it. My came saves their by default and I have several movies that I have watched off of it as well without any problems. I've seen others here on XDA who have had problems with it though...
http://forum.xda-developers.com/note-4-verizon/help/samsung-evo-microsd-64gb-card-problem-t2950988

masri1987 said:
will this http://www.amazon.com/dp/B00IVPU7AO/?&ascsub&tag=gizmodoamzn-20&ascsubtag=[referrer|www.google.com[type|link[postId|1662669135[asin|B00IVPU7AO[authorId|5727177402741770316[type|mod-title be okay with our phones?
currently have the sandisk ultra 64gb and i have tons of "unexpected removal" problems with it..
Click to expand...
Click to collapse
If the card is seated securely and you are getting those errors sounds like a defective card.
Have you tried a low level format?
Have you tried other phones, devices?
If so do you get errors on those also?
Have you run any test on the card itself. Are you sure you are not mistaking issues with the new SD card permissions (or lack there of) for errors?
Those are some of the steps I suggest to figure out if the card is bad right out of the box, yes this happens a lot more than you think it does, or that card don't play nice with device this still happens even though it should not, or the card is on its way out. If nothing seems to be working try and get a replacement that should fix your issues and if it don't, don't buy that kind of card anymore

xxxtncxxx said:
If the card is seated securely and you are getting those errors sounds like a defective card.
Have you tried a low level format?
Have you tried other phones, devices?
If so do you get errors on those also?
Have you run any test on the card itself. Are you sure you are not mistaking issues with the new SD card permissions (or lack there of) for errors?
Those are some of the steps I suggest to figure out if the card is bad right out of the box, yes this happens a lot more than you think it does, or that card don't play nice with device this still happens even though it should not, or the card is on its way out. If nothing seems to be working try and get a replacement that should fix your issues and if it don't, don't buy that kind of card anymore
Click to expand...
Click to collapse
formatted it many times, S4\S5\Note3\Note 4 and G3 all give me the same errors with the same card
And keep in mind i have gotten this ultra replaced before from sandisk to the same issue.. just gonna give up on sandisk altogether to be honest.. .i just don't know much about Samsung's cards.

these are my options in regards to getting another card..
http://www.amazon.com/dp/B00IVPU7AO/?&ascsub&tag=gizmodoamzn-20&ascsubtag=[referrer|www.google.com[type|link[postId|1662669135[asin|B00IVPU7AO[authorId|5727177402741770316[type|mod-title
(if the evo one is bad ill go with this)
http://www.amazon.com/gp/product/B0...rd_t=36701&pf_rd_p=1970559082&pf_rd_i=desktop
http://www.amazon.com/gp/product/B0...rd_t=36701&pf_rd_p=1970559082&pf_rd_i=desktop

anyone?? i must make a decision...

bump

masri1987 said:
formatted it many times, S4\S5\Note3\Note 4 and G3 all give me the same errors with the same card
And keep in mind i have gotten this ultra replaced before from sandisk to the same issue.. just gonna give up on sandisk altogether to be honest.. .i just don't know much about Samsung's cards.
Click to expand...
Click to collapse
I have never had a issue with SanDisk but is the luck or unlucky of the draw[emoji1]
Formatting many times is no good for SD cards should really only format when you HAVE TO. There is really no need to format reformat... Usually after some time of using the card you can get back some lost performance by performing a low level format. But again really should only do that when you NEED to.
I have the Pro version (the Grey and more expensive one) Samsung card you have listed, I love it as far as performance and what not but I use it quite often for various devices not only in the N4, but for many people an expensive high capacity high performance card will be pretty much a waste (at least until root comes our way). Many people can survive on the devices memory alone, if I had to I totalaly could without any issues. Most things are streamed/synced/cloud and whatnot so there is no need to have a large amount of things stored on a SD specially when you take into consideration the new android sdcard permissions. Only system apps can even write to the card, no normal apps can.
This may change down the road hopefully, Google will be persuaded into changing that policy, or at least once we have root we can make our own rules.
Unfortunately Android has the stigma of being the "Least Secure Mobile OS" and I think Google is going to move in the direction trying to rectify this. That is going to be unfortunate for us I believe, because technically the statement that Android is the least secure of the mobile os's at this time is true. If the user knows nothing about computers, software, Linux and whatnot then yes this is true. But for many of the same reasons Android is considered vulnerable are the reasons the advanced user loves Android. Unfortunately I think many of these things are going to change and the advanced users will be stuck with solutions to problems we never had in the first place because the vast majority of people need there hand held in everything they do. LOL sorry about the rant but above that is my 2 cents of your card question.

Same issue and now extreme battery drain by IndexService
mademan420 said:
I've been using the same card for a couple of weeks now with nothing negative to report about it. My came saves their by default and I have several movies that I have watched off of it as well without any problems. I've seen others here on XDA who have had problems with it though...
http://forum.xda-developers.com/note-4-verizon/help/samsung-evo-microsd-64gb-card-problem-t2950988
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I had the same problem with my Note4. I suspect this to be the cause of my recent problems with IndexService.
The last days I noticed an extreme batterydrainage. (50% in 4 hrs only cheching mail and reeding some ebook and newspaper) 44% usage by IndexService and 17% by screen.
At first i thought it was my Next UI . Deleted it . No changes.
Then I found out about similar issues on S5 and note 3 to be caused by corrupt pdf files. I deleted all documents, pictures, ... everything! Nothing changed.
i took out the SDcard. The same or even worse. Keeps the phone checking for SDcard when none installed?
So I reconnected the SDcard and formatted it again. STILL NO CHANGES.
Suggestions anyone?

xxxtncxxx said:
I have never had a issue with SanDisk but is the luck or unlucky of the draw[emoji1]
Formatting many times is no good for SD cards should really only format when you HAVE TO. There is really no need to format reformat... Usually after some time of using the card you can get back some lost performance by performing a low level format. But again really should only do that when you NEED to.
I have the Pro version (the Grey and more expensive one) Samsung card you have listed, I love it as far as performance and what not but I use it quite often for various devices not only in the N4, but for many people an expensive high capacity high performance card will be pretty much a waste (at least until root comes our way). Many people can survive on the devices memory alone, if I had to I totalaly could without any issues. Most things are streamed/synced/cloud and whatnot so there is no need to have a large amount of things stored on a SD specially when you take into consideration the new android sdcard permissions. Only system apps can even write to the card, no normal apps can.
This may change down the road hopefully, Google will be persuaded into changing that policy, or at least once we have root we can make our own rules.
Unfortunately Android has the stigma of being the "Least Secure Mobile OS" and I think Google is going to move in the direction trying to rectify this. That is going to be unfortunate for us I believe, because technically the statement that Android is the least secure of the mobile os's at this time is true. If the user knows nothing about computers, software, Linux and whatnot then yes this is true. But for many of the same reasons Android is considered vulnerable are the reasons the advanced user loves Android. Unfortunately I think many of these things are going to change and the advanced users will be stuck with solutions to problems we never had in the first place because the vast majority of people need there hand held in everything they do. LOL sorry about the rant but above that is my 2 cents of your card question.
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no and i agree with you regarding your rant.. it's just sad there is no recognition for the hardcore base user group.
So i think i'm gonna bite the bullet and buy the pro... I've done some more research and it seems that specifically the Ultra 64gb sandisk card manufactured a year or later ago has a technical 'fault' according to sandisk. i don't care for another sandisk so i'm gonna just buy the pro...

although i feel exhaustd with sandisk.. there is a 64gb extreme sandisk microsd ...
how is the quality of the extreme cards compared to the samsung pro?

bumpity bump

I had issues with my 64g SanDisk ultra when I got my note 4. Worked fine in my note 2 until I moved it to my note 4. Then I started to get the SD card unexpectedly removed, constantly remounting. Formatted it in the phone in the computer nothing worked. Couldn't even copy back the stuff that was on it. Purchased a PNY 4k compatible micro sd and it works great. I will never get another SanDisk.