app2sd self destruct - Droid Eris Android Development

My Eris has been running very smoothly for several weeks with ELB 2.7 with JIT enabled and most of my apps relocated to the SD card. But a few days ago, I started experiencing crashes when waking up the phone or answering a call, and then last night I started getting FCs anytime I tried to launch an app located on the SD card.
The FAT partition works fine, and the EXT partition appears intact when I mount it, but nothing located there will launch.
I've resolved the issue (sort of) by reinstalling the apps I need on my phone, and switching off App2SD, but now I'm wondering what the next step should be. Does this indicate that my SD is dying, or should I try repartitioning the card -- either to eliminate the EXT partition entirely or to recreate it?

just try reformatting the card...if you start experiencing it again...then your card is most likely dying... sorry...

Even if you got your Eris on the first day it came out, your card shouldn't be close to "dying" yet. Maybe it was defective to begin with. I'd bet willing to be its not the card. I know a2sd is harder on it, but I just doubt it killed it already.
Copy your apps to PC, reformat SD Card, Copy apps back, and see what happens.
Please report back, I'd be interested to see what happened.

Apps2SD isn't recommended by a lot of the devs for a reason. It causes unnecessary wear on the SD card. SD cards have a limited life span of around 100k cycles. When you access a program on the SD card it doesn't just make 1 cycle (read/write), it makes many during the usage of the program. 100k for picture taking and other standard use is quite a bit, but when an app is accessing the SD card constantly while running 100k is reached very quickly.
I'm going to take a guess and say your card is dying for reasons stated above. Try reformatting as recommended, if that doesn't work, replace the card.

The only time this would be a concern is if you moved dalvik-cache to the SD card (as that is constantly updated). When you put an application on the SD card, the data related to the card is stored in /data/data, which is not moved to the SD card (this is why internal storage continues to decrease after you move apps and dalvik-cache to the SD card).
Also, it's 100,000 cycles per block of memory. Most SD cards have wear-leveling technology that helps with this issue, so it will take a while before the card becomes bad (if it is a good quality card).
I would say he has a failing card. It happens once in a while.
Unheard said:
Apps2SD isn't recommended by a lot of the devs for a reason. It causes unnecessary wear on the SD card. SD cards have a limited life span of around 100k cycles. When you access a program on the SD card it doesn't just make 1 cycle (read/write), it makes many during the usage of the program. 100k for picture taking and other standard use is quite a bit, but when an app is accessing the SD card constantly while running 100k is reached very quickly.
I'm going to take a guess and say your card is dying for reasons stated above. Try reformatting as recommended, if that doesn't work, replace the card.
Click to expand...
Click to collapse

yeah u gotta be very careful with app2sd

I followed the advice of several people and repartitioned reformatted my sd card. I decided to go without app2sd for awhile so I just did a single fat partition. So far so good...everything is working again.
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Related

My camera is working randomly...i get random restarts too :)

Well the same day i got my nexus, after taking few pictures, my camera basicly died, started to give errors or restarts the phone, then it was unable to get on at all.
I did factory reset number of times, nothing happened. I thought it's something hardware and forgot about my camera for a while, just to find today that it works again. I took lots of pictures without any problems, shot some video too.
Later in the day when i decided to try it again, it was giving the same error again as day 1 ("The camera application is not responding" and you can force kill it, then if go to the camera again, it says that it couldnt connect to the camera).
So seems like it's something software related since its randomly working, but if factory reset isn't helping, then what it might be that can be fixed softwarely?
I'm rooted now. Still the stock rom.
p.s.
the phone also restarts when i mount the SD card and start copying lots of files and randomly restarts at other occasions too, without any obvious reasons, even when just sitting.
Other than that the phone is great
hopefully its all software that can be fixed though!
Sounds to me like there's something buggy on ya SD card. Id reformat the SD card if ya haven't already and run it empty for a bit to see if the problem persists... I think the most forgotten fix for things if they haven't figured it out is SD card, a lot of issues can come from the SD card, not saying ievery issue is the SD card, but ya be surprised how a card can wack phone out.
Sounds to me like its when your phones accessing the SD card...
yeah makes sense but
i've formatted it many times, and the camera doesnt work even without it (doesnt even start)
btw it's not the original card, but my old one from my HTC HD
the camera is supposed to work and without a SD card inserted right?
Fking1 said:
yeah makes sense but
i've formatted it many times, and the camera doesnt work even without it (doesnt even start)
btw it's not the original card, but my old one from my HTC HD
the camera is supposed to work and without a SD card inserted right?
Click to expand...
Click to collapse
I meant keep card in it, just empty without files, formatted and see what happens
i've tried that, doesnt help
Hi,
try formatting SD card with Panasonic SD Formatting Tool,it writes back the partition table and could help. For me worked, I had an issue with gallery, surely related to SD card, and now works well.
Bye
what settings to use to format it?
what fat, cluster size?
i've formated it bunch of times with the windows vista tool, fat32 and the default cluster size (i think) but it didnt help.
And if i recall correctly it was crashing the camera and with SD card out of the phone
yeah just tried again
even with the card out, none of the camera using applications starts, including the camera, barcode scanner and 3d compass
the later 2 dont even take pictures, so they dont need the sd card at all and still they dont work
what else it might be? im getting some other applications crashes from time to time, seems that my phone isnt very stable. And it's stock...huh
I suggest sending it back for repair/replacement. Could very possibly be the result of bad blocks in ram.
You mentioned it isn't the original SD card the phone came with. Why don't you try the original card then, and see if it is the actual card, or the phone that is the problem.
Clarkster said:
You mentioned it isn't the original SD card the phone came with. Why don't you try the original card then, and see if it is the actual card, or the phone that is the problem.
Click to expand...
Click to collapse
i would have done that long time ago if i had it, this is the only card i have handy at the moment
but it makes the same problem with the card pulled out, so it isn't the card for sure
do u tihnk that there is any chance reflashing the rom would fix it?
any records of factory roms being buggy for just particular devices?
Okay...first off you said it's an older card, you could have bad sectors on your card, some of the older cards only have a read/write cycle of a couple thousand before fail. Second you can't run the camera app without the sd card. Third formatting the card so many times helps you count down those read/write cycles on your card. I'd be pretty confident in saying that your problems would go away after getting a new card. Hope this helped
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llxxjinxxll said:
Okay...first off you said it's an older card, you could have bad sectors on your card, some of the older cards only have a read/write cycle of a couple thousand before fail. Second you can't run the camera app without the sd card. Third formatting the card so many times helps you count down those read/write cycles on your card. I'd be pretty confident in saying that your problems would go away after getting a new card. Hope this helped
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Click to expand...
Click to collapse
would be great if its just that
But what do u get you when you try to start the camera app with SD card out
Does it hangs and crashes and you need to force kill it or?
yup....just tried it, i popped my card out rebooted and started camera app, and i got a force close with no option to wait
that's great man! It means that it could actually be from the stupid card!
thank you so much!
uninstall market updates
Devastatin said:
uninstall market updates
Click to expand...
Click to collapse
m? hows that supposed to help?
Well i tried with 2 different cards, it still gives the very same problem
it isnt the card
im with froyo now, and that doesnt fix it either
do you think if the cyanogen rom may change something about this?

damaged sd card???

has this ever happened to anyone? not sure if its coincidence or not, but i installed the new unstableapps overclock app and it was running at 1.3 fine, was playing a game, it froze, rebooted, then the message pops up in my notification bar that my sd card was damaged and i had to format it. not a huge deal but i lost some pics of my kids on their first field trip in preschool so that sucks. my pc wouldn't even recognize it... just wondering if anyone had any input on this?
I've been stressing my phone while OC'd playing games as well. It occasionally freezes on me, but I've never had a data corruption. I don't have any apps on my SD card, though. Was the game on your card?
Just noticed your post as I just created a thread about my SD Card doing the exact same thing today. I was just taking pictures of my kids when the Camera app Crashed. Restarted my phone and Got the same error about SD card needing to be formated. Running Stock 2.2. I'm not going to format the card until I know for sure the data is gone as I too have pictures on it I need.
yeah i think the game was installed on the card. i think i had the overclock too high. its stable at 1.2 but any higher i get force closes playing that game... maybe i'll try to move it and see what happens...
My SD Card crapped out withing the first week. I hadn't had time to root the phone or overclock it. Verizon replaced it. I think some of the SD cards are defective. This post will remind me to copy the contents of my SD card to my computer in case something like this happens again. I have most of my apps running from the SD card.
If a file is open on your SD card when an app or the phone crashes it will leave the file corrupt on the card. This will throw errors when you're trying to use the card in the phone. You should try making a backup on your PC of the SD card, then poke around on the SD card for the potentially corrupt file. If you can manage to delete it you should be fine.

New SD Card

Has anyone laid out the procedure for what to do with a new SD card and WP7 install? I've noticed many posts about it but no one saying exactly "this is what to do". I think this might be why there are so many posts about SD card failures. So if I have a new SD card and an HD2 and I want WP7, what do I do? Thanks ahead of time... Mod if there is an answer to this, I couldn't find it.
thuddome said:
Has anyone laid out the procedure for what to do with a new SD card and WP7 install? I've noticed many posts about it but no one saying exactly "this is what to do". I think this might be why there are so many posts about SD card failures. So if I have a new SD card and an HD2 and I want WP7, what do I do? Thanks ahead of time... Mod if there is an answer to this, I couldn't find it.
Click to expand...
Click to collapse
If you're just planning to run WP7 (so no fancy dualbooting with Android), there's not much to do, besides backing up anything on the card that you would like to keep. Your phone will create the necessary partitions and take care of the formatting on first boot, if I'm not mistaken.
Not really sure what you mean by "SD card failures". I don't recall reading any posts about that, unless you're referring to the random problems people are having with WP7 and some brands/types of SD cards (not really the result of any card failure).
aye what he said, if you have issues such as lag, wifi not working, random reboots etc then its an SD issue, that means you are out of luck with that current card, . Dont believe anyone when they tell you to buy a spacific card, there is no consistancy in the building of these things so where as you might have issues, someone else with the same card may be fine.i personally have had a wee bit of luck by filling my card with more music
the story is, i had no issues at all with my SD card, but one day after dumping some more music on i started getting reboot issues, took the music off and all was well, then i tried slapping more music on, about 200MB more, and that was it, all is ok again.
its a pure guess, well perhaps an educated guess, but i believe that for whatever reason WP7 had issues accessing a portion of my card, by filling it up some more it prevented WP7 from using it, and thus all is ok again, to be clear, the music played fine however!
dazza9075 said:
aye what he said, if you have issues such as lag, wifi not working, random reboots etc then its an SD issue, that means you are out of luck with that current card, . Dont believe anyone when they tell you to buy a spacific card, there is no consistancy in the building of these things so where as you might have issues, someone else with the same card may be fine.i personally have had a wee bit of luck by filling my card with more music
the story is, i had no issues at all with my SD card, but one day after dumping some more music on i started getting reboot issues, took the music off and all was well, then i tried slapping more music on, about 200MB more, and that was it, all is ok again.
its a pure guess, well perhaps an educated guess, but i believe that for whatever reason WP7 had issues accessing a portion of my card, by filling it up some more it prevented WP7 from using it, and thus all is ok again, to be clear, the music played fine however!
Click to expand...
Click to collapse
That's interesting because I have had the same experience. I have been playing around with multiple size cards and brands. I have yet to get one work right. I have also discovered how you format them makes a difference; for example I have a Patriot class 4 16GB card that using EASEUS to format (low level) it worked but had lag at certain times, for example when going through setup on a fresh install of WP7. It was at a dead crawl with the same config with Android. I then formatted it with Minitool and it was unusable (dead dead crawl) with either WP7 and Android. I also tested a Kingston class 4 32GB w/ wp7 and it was about the same as the Patriot w/ EASEUS formatting. No card I have found outperforms (in the phone) the Sandisk Class 2 16GB card that came with the phone. My suspicion is that the cards that came with the phones have had something done to the sectors by the phone manufacturers. I need to hear from someone who really knows the I/O and Cardbus architecture of phones. My point is there should be a way to get all cards working with any phone, might not be to specs of the card but between tweaking formatting and other hacks they all should work.
thuddome said:
That's interesting because I have had the same experience. I have been playing around with multiple size cards and brands. I have yet to get one work right. I have also discovered how you format them makes a difference; for example I have a Patriot class 4 16GB card that using EASEUS to format (low level) it worked but had lag at certain times, for example when going through setup on a fresh install of WP7. It was at a dead crawl with the same config with Android. I then formatted it with Minitool and it was unusable (dead dead crawl) with either WP7 and Android. I also tested a Kingston class 4 32GB w/ wp7 and it was about the same as the Patriot w/ EASEUS formatting. No card I have found outperforms (in the phone) the Sandisk Class 2 16GB card that came with the phone. My suspicion is that the cards that came with the phones have had something done to the sectors by the phone manufacturers. I need to hear from someone who really knows the I/O and Cardbus architecture of phones. My point is there should be a way to get all cards working with any phone, might not be to specs of the card but between tweaking formatting and other hacks they all should work.
Click to expand...
Click to collapse
My phone came with a Sandisk 2GB card and WP7 has offered me a SD Card Failed message regardless of what technique I have used to Format it...
thuddome said:
That's interesting because I have had the same experience. I have been playing around with multiple size cards and brands. I have yet to get one work right. I have also discovered how you format them makes a difference; for example I have a Patriot class 4 16GB card that using EASEUS to format (low level) it worked but had lag at certain times, for example when going through setup on a fresh install of WP7. It was at a dead crawl with the same config with Android. I then formatted it with Minitool and it was unusable (dead dead crawl) with either WP7 and Android. I also tested a Kingston class 4 32GB w/ wp7 and it was about the same as the Patriot w/ EASEUS formatting. No card I have found outperforms (in the phone) the Sandisk Class 2 16GB card that came with the phone. My suspicion is that the cards that came with the phones have had something done to the sectors by the phone manufacturers. I need to hear from someone who really knows the I/O and Cardbus architecture of phones. My point is there should be a way to get all cards working with any phone, might not be to specs of the card but between tweaking formatting and other hacks they all should work.
Click to expand...
Click to collapse
Lower class sd-cards have way better random reads/write speeds. This means they are better for storing file-caches, system files, and other rather small/scatered files. A higher class card will have awesome read/write speeds, but they do sacrifice the random speeds (they will preemptively load huge chunks of the file they are writing/reading to/from. So, they will have an overhead when accessing a file, that will be attenuated only if the operations made with that file are long. If u wanna write/read a large chunk of small non-sequential file/s, a class 2 is awesome. Which means that these cards are adequate form OS being run from them. Of course, when syncing with zune, you WILL notice a very decreased speed (since the files are being passed sequencially), but the system per se will operate silky smooth.
Hope this helped. Kudos mate
ei05035 said:
Lower class sd-cards have way better random reads/write speeds. This means they are better for storing file-caches, system files, and other rather small/scatered files. A higher class card will have awesome read/write speeds, but they do sacrifice the random speeds (they will preemptively load huge chunks of the file they are writing/reading to/from. So, they will have an overhead when accessing a file, that will be attenuated only if the operations made with that file are long. If u wanna write/read a large chunk of small non-sequential file/s, a class 2 is awesome. Which means that these cards are adequate form OS being run from them. Of course, when syncing with zune, you WILL notice a very decreased speed (since the files are being passed sequencially), but the system per se will operate silky smooth.
Hope this helped. Kudos mate
Click to expand...
Click to collapse
just about to write all of that myself but you beet me too it!
to add to that, no two cards are alike, make and model makes no difference hence my issue with the "working SD card" thread on here, there is no way to know other than trying it
My wee issue is possibly related to some dodgy parts within the card, it reports perfect but if internal components are not consistant it may explain my rather odd situation
dazza9075 said:
just about to write all of that myself but you beet me too it!
to add to that, no two cards are alike, make and model makes no difference hence my issue with the "working SD card" thread on here, there is no way to know other than trying it
My wee issue is possibly related to some dodgy parts within the card, it reports perfect but if internal components are not consistant it may explain my rather odd situation
Click to expand...
Click to collapse
In your situation i'd risk say it might have occured some corruption when transfering those musics. At least, considering that all is well now. It is unlikely that a sector of your card is/was permanently damaged, as repeting the operation worked, aye? Also, since I don't know what the file system is used by WP7, I do not know what maintenance the file system requires (such as defragmentation and whatnot)
perhaps, but it is repeatable, if i remove 400MB of music from my device its fine, if then copy 200 on to the card it reboots randomly, if i then copy the additional 200 back to the card it works fine
Potentially your correct, it may be some sign of wear on the card, but either way the music plays fine, which possibly suggests the random access speeds issue again, if it is sub-par sectors on the card that may explain it

Micro SD card continually formats

Hi, was just wondering if anyone else has had any issues with their mojo continually formatting itself/loosing all data.
Mine is literally doing it none stop. I use a USB drive for my music and video files which I've not had many issues with.
But my micro SD is literally formatting it self every few hours it seems. Which is an absolute ball ache as I want to use the SD card for my apk data files. It seems to occurs when I stop using the mojo and come back to it a few hours later the SD card is completely empty again.
Transfered close to 40 GB android apps on to it yesterday in one last attempt to use the micro SD and all my apps where on the SD card and worked fine. I went to bed, just woke up this morning and yet again my mojo now shows the SD card as being completely empty.
I don't think theirs an issue with the SD as I have used the card for about 6 months no problems in my phone and tablets.
Edit: By the looks of it its every time my mojo freezes or crashes is when the SD card gets formatted, making it totally useless for android gaming in my books if the SD card ain't accessible
Ash180287 said:
Hi, was just wondering if anyone else has had any issues with their mojo continually formatting itself/loosing all data.
Mine is literally doing it none stop. I use a USB drive for my music and video files which I've not had many issues with.
But my micro SD is literally formatting it self every few hours it seems. Which is an absolute ball ache as I want to use the SD card for my apk data files. It seems to occurs when I stop using the mojo and come back to it a few hours later the SD card is completely empty again.
Transfered close to 40 GB android apps on to it yesterday in one last attempt to use the micro SD and all my apps where on the SD card and worked fine. I went to bed, just woke up this morning and yet again my mojo now shows the SD card as being completely empty.
I don't think theirs an issue with the SD as I have used the card for about 6 months no problems in my phone and tablets.
Edit: By the looks of it its every time my mojo freezes or crashes is when the SD card gets formatted, making it totally useless for android gaming in my books if the SD card ain't accessible
Click to expand...
Click to collapse
I've seen the same issue, i stopped using mircosd cards. SAnDisk 64gb card

Help Please! MAJOR SD card issues!

New to XDA, not new to Android.
Phone: Moto X Play
Rom: Stock Marshmallow 6.1
Issue: SD Card disappears randomly (formatted as internal storage!!!)
Bootloader never unlocked, never rooted.
I have a sandisk 32gb micro sd card that works when I first start the phone. The problem is that it will randomly, completely, disappear.
Now I'm not, IMO, a complete noob. I am fairly (99%) sure it is indeed the sd card at fault. Ok, not an issue, I can always replace it with a new one.
The issue is, of course, that EVERYTHING is on my SD card, most importantly, my photos.
Even without accessing a file manager (phone idle, browsing web, playing games) the sd card will eventually fail leaving it inaccessible until the phone is restarted. When attempting to access my photos, which is what I need most, it fails MUCH quicker.
Having not used the "Google Photos" app before (just Gallery), I am not at all sure if my photos were ever backed up online, If they were, I'm not sure where to look.
Trying to access them via usb, wifi file transfer, bt tranfer, and even from file managers on the phone itself, result in an almost immediate failure of the sd card. 5 seconds or so tops.
The card is formatted as "Internal Storage" and I have not been able to find a way to get a computer or anything else to read it, and I would imagine for security reasons, there is no way.
Here's the question: Is there any way to get photos off the sd card, that wont take me three million years in 5 second intervals, while having to restart the phone every bleeping time the sd card fails to get it to recognize the sd card again?
Suggestions please!
Thanks in advance,
Canabian
Canabian420 said:
New to XDA, not new to Android.
Phone: Moto X Play
Rom: Stock Marshmallow 6.1
Issue: SD Card disappears randomly (formatted as internal storage!!!)
Bootloader never unlocked, never rooted.
I have a sandisk 32gb micro sd card that works when I first start the phone. The problem is that it will randomly, completely, disappear.
Now I'm not, IMO, a complete noob. I am fairly (99%) sure it is indeed the sd card at fault. Ok, not an issue, I can always replace it with a new one.
The issue is, of course, that EVERYTHING is on my SD card, most importantly, my photos.
Even without accessing a file manager (phone idle, browsing web, playing games) the sd card will eventually fail leaving it inaccessible until the phone is restarted. When attempting to access my photos, which is what I need most, it fails MUCH quicker.
Having not used the "Google Photos" app before (just Gallery), I am not at all sure if my photos were ever backed up online, If they were, I'm not sure where to look.
Trying to access them via usb, wifi file transfer, bt tranfer, and even from file managers on the phone itself, result in an almost immediate failure of the sd card. 5 seconds or so tops.
The card is formatted as "Internal Storage" and I have not been able to find a way to get a computer or anything else to read it, and I would imagine for security reasons, there is no way.
Here's the question: Is there any way to get photos off the sd card, that wont take me three million years in 5 second intervals, while having to restart the phone every bleeping time the sd card fails to get it to recognize the sd card again?
Suggestions please!
Thanks in advance,
Canabian
Click to expand...
Click to collapse
Format the card using computer (Not quick format )
Quick format didn't worked for me.
And don't make card as internal, use it as portable
with the sd card in the phone, go to settings - apps, show system apps. then select External Storage, force stop it or clear it cache. do the same to Media Storage. reboot the phone, once everything loaded wait for 5-10 minutes especially if you have lots of files in a large sd card. once that done, connect the phone to your pc (use mtp if i'm not mistaken) and hopefully you can now access the internal (sd card) contents.
jerryn70 said:
Format the card using computer (Not quick format )
Quick format didn't worked for me.
And don't make card as internal, use it as portable
Click to expand...
Click to collapse
This will HOPEFULLY resolve the issue AFTER I get my photos off the card!
What I need help with is getting roughly 10 gigs of data off a card that works intermittently for roughly 5 seconds at a time....
-Canabian
pijes said:
with the sd card in the phone, go to settings - apps, show system apps. then select External Storage, force stop it or clear it cache. do the same to Media Storage. reboot the phone, once everything loaded wait for 5-10 minutes especially if you have lots of files in a large sd card. once that done, connect the phone to your pc (use mtp if i'm not mistaken) and hopefully you can now access the internal (sd card) contents.
Click to expand...
Click to collapse
I will try this and report back.
One question... If the card is formatted as internal storage, clearing data for external storage and media storage will not cause the phone to "forget" the sd card will it?
Thanks,
Canabian.
I think I have come up with a solution to my own problem. If this works satisfactorily, I will let others know as this may help many other people facing this issue.
I am on a linux pc. I am going to try to use RSYNC to copy the files over. This SHOULD copy files over, deleting them from the source folder as it goes. Once the sd card fails, which it WILL, once I reboot the phone and start rsync once again, it should "resume" where it left off.
Here is the command for anyone else that may need it:
rsync -v --progress --remove-source-files --recursive --append-verify /path/to/source/files /path/to/destination/folder
Hopefully this works the way I hope it will. Will post back with my results when I can.
Thanks again,
Canabian.
I had the same problem, and the solution (that maybe someone posted somewhere in the internet) is using a faster SD card. Since I switched to a sandisk extreme pro, the problem disappeared. Be careful, though, when using Samsung SD cards: my moto x play doesn't like them much (I had to replace them twice before buying the sandisk; in some way the partition tables of the Samsung SD cards were damaged, plus they became read-only, resulting in two unusable cards).
jauffre said:
I had the same problem, and the solution (that maybe someone posted somewhere in the internet) is using a faster SD card. Since I switched to a sandisk extreme pro, the problem disappeared. Be careful, though, when using Samsung SD cards: my moto x play doesn't like them much (I had to replace them twice before buying the sandisk; in some way the partition tables of the Samsung SD cards were damaged, plus they became read-only, resulting in two unusable cards).
Click to expand...
Click to collapse
which samsung model did you use? I just replaced my normal class 10 strontium card yesterday with a brand new samsung evo plus u1 card and formatted it as internal storage. so far the phone feels a bit snappy with this card.
dude search a little in this section and i hope u find the fix.i just let u know that our device has very sensitive sd pins and many users had accidentally bented them and didn't know the problem!
i hope u are not one of them!so if you are lucky,next time u put the sd be veeeery careful!i personally didn't put it out from the time i bought it...
pijes said:
which samsung model did you use? I just replaced my normal class 10 strontium card yesterday with a brand new samsung evo plus u1 card and formatted it as internal storage. so far the phone feels a bit snappy with this card.
Click to expand...
Click to collapse
It was just a Samsung Evo class 10. The strange thing is that I tried also a Sandisk of the same class, which gave me only the "external memory missing" problem, while the Samsung ones became just unusable plastic. But maybe I should try better Samsung SD cards.

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