Develop Bugs

SanDisk Mobile Ultra microSDHC 16 GB

I have this microSDHC, and a serious problem, happens to the third time that when i restart my device, is result damaged and I do not see it from computer and from the device, the only way to use it is formatting can any body help me please?
Ps:actualy i,m using Valkyrie_v4.7 FireStorm,it can be caused from the rom?

happened to me exactly as you described.... I didn't know what to do... think i formatted the thing 2 times, but i couldn't get it to work.
so a lay off of it and used my 2GB Nokia microSD for a while... then i decided to check that sucker again, and surprisingly i saw that it worked... i think it got some bad sector (!!!!!) or lost a little amount of storage... but it is working perfectly now.
Mokhlesim!

My Sandisk 16 gb card stoped working too one day. I couldn't read it anymore neither on my HTC TP2 nor my desktops. It was replaced by the shop according to my waranty. The new one works fIne.

I had the same issue, then it couldn't be read or even formatted on any computer at home or work, I even had my Hospital's IT department check it out. But then I found this software and it found and reformatted my 16gb so that it was not trashed, and i haven't had a problem with the card in over a year. I hope this helps.
http://panasonic.jp/support/global/cs/sd/download/sd_formatter.html

bwnotredame06 said:
I had the same issue, then it couldn't be read or even formatted on any computer at home or work, I even had my Hospital's IT department check it out. But then I found this software and it found and reformatted my 16gb so that it was not trashed, and i haven't had a problem with the card in over a year. I hope this helps.
http://panasonic.jp/support/global/cs/sd/download/sd_formatter.html
Click to expand...
Click to collapse
thank for your replay my friend i,v just tried this tool,but it happened strange fact,when finished formatting said the sc card is not compatible ???
otakle said:
My Sandisk 16 gb card stoped working too one day. I couldn't read it anymore neither on my HTC TP2 nor my desktops. It was replaced by the shop according to my waranty. The new one works fIne.
Click to expand...
Click to collapse
thank,so i will wait for a while and if it repeate this anoing issue,will change it.
poka5532 said:
happened to me exactly as you described.... I didn't know what to do... think i formatted the thing 2 times, but i couldn't get it to work.
so a lay off of it and used my 2GB Nokia microSD for a while... then i decided to check that sucker again, and surprisingly i saw that it worked... i think it got some bad sector (!!!!!) or lost a little amount of storage... but it is working perfectly now.
Mokhlesim!
Click to expand...
Click to collapse
aghaiin

babak said:
thank for your replay my friend i,v just tried this tool,but it happened strange fact,when finished formatting said the sc card is not compatible ???
thank,so i will wait for a while and if it repeate this anoing issue,will change it.
aghaiin
Click to expand...
Click to collapse
try going to the site again and go through and make sure you downloaded the right one, I think there are different formatters for different cards. It should work though.

bwnotredame06 said:
try going to the site again and go through and make sure you downloaded the right one, I think there are different formatters for different cards. It should work though.
Click to expand...
Click to collapse
Thank again my friend,i,v send a mail to sandisk site and they gived me this link for HP USB Disk Storage Format Tool - v2.1.8 and it seems work nice now,i can be sure if me sd card is ok only after some week
Ps:this the link for that tool: http://files.extremeoverclocking.com/file.php?f=197

[Q] SD Card Issues

I've had my EVO since launch day and I'm now on my second SD card that's having issues. The first was a transcend, 8gb class 6, and it refused to be recognized after about 2-3 months. I then switched to a A-Data, 8gb class 6, that I'm currently using and the last week or so it mounts as read only. That's about 3 months per card which seemed pretty terrible. I was wondering if others have had similar issues. If it might be the the fact that the card is below the battery and overheating. Or if I just happen to buy crap cards. I'm wondering this because I want a 32gb card I don't want to spend a bunch on a new card and have it die after 3 months again.

ausch30 said:
I've had my EVO since launch day and I'm now on my second SD card that's having issues. The first was a transcend, 8gb class 6, and it refused to be recognized after about 2-3 months. I then switched to a A-Data, 8gb class 6, that I'm currently using and the last week or so it mounts as read only. That's about 3 months per card which seemed pretty terrible. I was wondering if others have had similar issues. If it might be the the fact that the card is below the battery and overheating. Or if I just happen to buy crap cards. I'm wondering this because I want a 32gb card I don't want to spend a bunch on a new card and have it die after 3 months again.
Click to expand...
Click to collapse
Been there, done that. It happens when you disconnect the usb cord before switching back to charge only. You need to see it say in the taskbar "preparing sd card" before you disconnect. Good news is it's an easy fix. Plug your usb cord in and connect to computer. Set it to Disk Drive in your Notification panel. On your computer, open the Computer panel, then right click on the drive that is now your phone and click Properties, then Tools and then Check for errors. Allow it to correct errors if found and when it has finished, be sure to go into your phone's notification panel and change your usb connection to Charge Only and wait to see the words "Preparing SD card" in your task bar before disconnecting the cord from your phone. Hope that helps.

w84mike said:
Set it to Disk Drive in your Notification panel. On your computer, open the Computer panel, then right click on the drive that is now your phone and click Properties, then Tools and then Check for errors. Allow it to correct errors if found and when it has finished, be sure to go into your phone's notification panel and change your usb connection to Charge Only and wait to see the words "Preparing SD card" in your task bar before disconnecting the cord from your phone. Hope that helps.
Click to expand...
Click to collapse
I tried this already, when switching to USB storage, it's not being identified by my computer. I don't have a card reader in my computer but I'm going to a friends tomorrow that does so I'll try it in there and see if I can check for errors.

76 views and only 1 response, I can only assume that I just bought **** cards because it doesn't seem like other people are having issues. Next time I guess I'll bite the bullet and go with SanDisk, hopefully those will last longer.

Are you using a2sd? I was having the same issue and after removing a2sd everything started working perfectly.
Sent from my PC36100 using XDA App

No, not using a2sd.
Sent from my PC36100 using XDA App

I've also been having issues with the SD card in a different area.
I always listen to music on my phone, and 50% of the time it says "failed to read file" when it tries to play. I try to unmount and remount to fix it , but then it always says "blank sd card" when it remounts. The other half the time the music plays fine, but this problem is so annoying because a reboot will only fix it, and even then that has not worked before.
This happens on all ROMs I've tried (CM6, Myn, and baked snack) with all music players using the stock card from sprint.

on my third card ,2 sandisk, now on pnc ,i think. anyway I think its over heating . one time it was charging from oklahoma to dallas , unplugged went to music ,nothing there, fried.
the other was running gps for almost 3 hours ,battery died ,phone was hotter than hell , powerd back up and you guessed it fried.
tried in pc and it never recognized. Learned lesson backed up evo almost once a week on pc. will see how #3 gets fried.
Still love my evo,thank goodness best buy always replaces for free

cbrewington75 said:
on my third card ,2 sandisk, now on pnc ,i think. anyway I think its over heating . one time it was charging from oklahoma to dallas , unplugged went to music ,nothing there, fried.
the other was running gps for almost 3 hours ,battery died ,phone was hotter than hell , powerd back up and you guessed it fried.
tried in pc and it never recognized. Learned lesson backed up evo almost once a week on pc. will see how #3 gets fried.
Still love my evo,thank goodness best buy always replaces for free
Click to expand...
Click to collapse
Interesting, I thought it might have to do with an overheating issue. I still have the 8gb class 2 SanDisk that came with the phone, I've never used it. I'm going to give that a shot and see how long it lasts. It could be that I had lower quality cards. Regardless of the brand, most memory chips inside SD cards come from the same place, usually Samsung. Therefore, brand shouldn't matter all that much. We'll see, I'll throw the 8gb that came with it in and see how long that one lasts.
I did find it interesting that you said Best Buy replaces it for free. I bought mine at Radio Shack but I have the insurance through Sprint. I wonder if Sprint would replace dead cards.

Is my phone killing my memory card(s)?

Ok so i had a 32gb card and it started failing on my phone, it would work sometimes or ask me to format it, sometimes it would work fine so i assumed it was about to die soon so i was able to back everything up,.
Bought a new 64gb sandisk card, the one suggested from the accessories list...well i've been using it for about a week now and it just died on me today.
doesn't even get detected...
i never formatted, it, read that this phone could support it right away...well now nothing works and i've lost everything....again!!!
this is really frustrating...i've lost some major saved games and it's depressing
could it be the phone...or was it just a bad card
i've used the original charger and battery at all times...
any clues?

krazyq said:
Ok so i had a 32gb card and it started failing on my phone, it would work sometimes or ask me to format it, sometimes it would work fine so i assumed it was about to die soon so i was able to back everything up,.
Bought a new 64gb sandisk card, the one suggested from the accessories list...well i've been using it for about a week now and it just died on me today.
doesn't even get detected...
i never formatted, it, read that this phone could support it right away...well now nothing works and i've lost everything....again!!!
this is really frustrating...i've lost some major saved games and it's depressing
could it be the phone...or was it just a bad card
i've used the original charger and battery at all times...
any clues?
Click to expand...
Click to collapse
Look for File Restore Plus software. it will retrieve all of your lost files in your micro SD card. this happened to me a few times but this software saved my butt!

I may be wrong here but I seem to remember some people having issues withe the 64gb cards. Search around and youll probably find something.
Also check www.sdcard.org for more info on the sdxc cards and a sd formating tool that may help.
Sent from my SGH-T999 using xda app-developers app

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.

Sd Card pop up message

Constantly getting sd card pop up saying click here to transfer files,
despite swiping it away,closing it down, it keeps reappearing every 20 minutes or so!
It seems a problem on some Samsung phones inc Note 10 Plus 5g, but despite trying
most things people have suggested on the net, i cant stop this buggy pop up !
Have even factory reset phone again, and sd card, both in phone, and on laptop
Any one got any solution for it, or have i got a faulty phone?
Card i'm using is a brand new, Integral 256GB Micro SD Card 4K Video Premium High Speed Memory Card SDXC Up to 100MB s Read Speed and 50MB s Write speed V30 UHS-I U3 Class 10
Thanks in advance for any help
Jools

jools2001 said:
Constantly getting sd card pop up saying click here to transfer files,
despite swiping it away,closing it down, it keeps reappearing every 20 minutes or so!
Card i'm using is a brand new, Integral 256GB Micro SD Card 4K Video Premium High Speed Memory Card SDXC Up to 100MB s Read Speed and 50MB s Write speed V30 UHS-I U3 Class 10
Click to expand...
Click to collapse
Never heard of the brand of SD Card you're using.
My guess, since it's brand new, it's defective at best.
I'd return it for a refund & get a better known brand such as SanDisk or Samsung.

My guess is that you have a faulty SD card. I would return it if I were you or get a new one. Cheap SD cards malfunction often. I've been a victim myself. That's why I only buy reputable names from sources that will accept returns if damaged. I've lost precious memories due to this issue.
Sent from my Pixel 3 XL

Thanks for replies, i actually reset phone and card again this morning
thought i fixed the fault, but after 2 hours it came back!
So back to Amazon ,and back to Samsung sd card! lol
Just put the card back into my old Note 8, just to see if it happens on that phone,
as Note 10 is a refurbished like new, and need to see if it the phone or card thats actually faulty,
otherwise retailer is gunna blame the card, and not their phone,and Amazon are going to blame the phone more than likely ! lol

jools2001 said:
Thanks for replies, i actually reset phone and card again this morning
thought i fixed the fault, but after 2 hours it came back!
So back to Amazon ,and back to Samsung sd card! lol
Just put the card back into my old Note 8, just to see if it happens on that phone,
as Note 10 is a refurbished like new, and need to see if it the phone or card thats actually faulty,
otherwise retailer is gunna blame the card, and not their phone,and Amazon are going to blame the phone more than likely ! lol
Click to expand...
Click to collapse
Amazon has a no questions asked return policy. Send it back before your return window closes.
Sent from my Pixel 3 XL

jools2001 said:
Thanks for replies, i actually reset phone and card again this morning
thought i fixed the fault, but after 2 hours it came back!
So back to Amazon ,and back to Samsung sd card! lol
Just put the card back into my old Note 8, just to see if it happens on that phone,
as Note 10 is a refurbished like new, and need to see if it the phone or card thats actually faulty,
otherwise retailer is gunna blame the card, and not their phone,and Amazon are going to blame the phone more than likely ! lol
Click to expand...
Click to collapse
A hard reset (OS reload) of the phone effectively addresses viruses, trojans and old OS loads but little else.
Many times the same settings issue remains to be toggled or triggered again.
Find and address the core issue directly.
•Clean card contacts with a tissue and 97% isopropyl alcohol.
•Do a low level format on card if this doesn't resolve the issue, replace the card.
This card works perfectly out of the box:
https://forum.xda-developers.com/galaxy-note-10+/accessories/memory-upgrade-time-t4155549

KOLIOSIS said:
Never heard of the brand of SD Card you're using.
My guess, since it's brand new, it's defective at best.
I'd return it for a refund & get a better known brand such as SanDisk or Samsung.
Click to expand...
Click to collapse
Integral are a good quality lower cost SD card supplier in UK
Not sure how to help the OP out but I have the same card and no issues.

Well i formated old Note 8 memory card
128GB Micro SD SDXC Samsung EVO Plus UHS-I U3 Card
Been in phone now for nearly a day, and no errors or notifications have popped up on my Note 10 Plus!
Obviously the phone didnt like something with this certain Integral card, as it worked back in my old Note 8 without any problem?
One of lifes mysteries, but now gone back to Amazon for my £28 refund, and hopefully no more hassle.
Thanks to everyone who replied
Jools

Low Level Format
jools2001 said:
Thanks for replies, i actually reset phone and card again this morning
thought i fixed the fault, but after 2 hours it came back!
So back to Amazon ,and back to Samsung sd card! lol
Just put the card back into my old Note 8, just to see if it happens on that phone,
as Note 10 is a refurbished like new, and need to see if it the phone or card thats actually faulty,
otherwise retailer is gunna blame the card, and not their phone,and Amazon are going to blame the phone more than likely ! lol
Click to expand...
Click to collapse
jools2001 said:
Well i formated old Note 8 memory card
128GB Micro SD SDXC Samsung EVO Plus UHS-I U3 Card
Been in phone now for nearly a day, and no errors or notifications have popped up on my Note 10 Plus!
Obviously the phone didnt like something with this card, as it worked back in my old Note 8 without any problem?
One of lifes mysteries, but now gone back to Amazon for my £28 refund, and hopefully no more hassle.
Thanks to everyone who replied
Jools
Click to expand...
Click to collapse
Do a low level format on the computer using a apk like Lexar's designed to do a low level format. Simply wiping the card isn't enough sometimes and without a low level format it will remain corrupted.
Sharing a card between two devices can cause card corruption, try to avoid doing so. Usually you can swap between two Androids but be very wary of swapping with other devices like cams etc. Do a full format in the new device to ensure compatibility and stability. Not doing this can result in corrupted card even if it may seem to be functional at first.
You can lose all the data on the card like this and even if you can recover it, it will be in bits and pieces... more or less a useless heap of disjointed data.

blackhawk said:
Do a low level format on the computer using a apk like Lexar's designed to do a low level format. Simply wiping the card isn't enough sometimes and without a low level format it will remain corrupted.
Sharing a card between two devices can cause card corruption, try to avoid doing so. Usually you can swap between two Androids but be very wary of swapping with other devices like cams etc. Do a full format in the new device to ensure compatibility and stability. Not doing this can result in corrupted card even if it may seem to be functional at first.
You can lose all the data on the card like this and even if you can recover it, it will be in bits and pieces... more or less a useless heap of disjointed data.
Click to expand...
Click to collapse
I did all the low level format, on both cards, but it still didnt stop the card playing up in my Note 10, and actually corrupting 2 pics,
so i wasnt going to risk that, just needed to make sure it wasnt the phone at fault, as it was only a few days old, but guess it was the card!
lets hope it goes ok from now on! lol

jools2001 said:
I did all the low level format, on both cards, but it still didnt stop the card playing up in my Note 10, and actually corrupting 2 pics,
so i wasnt going to risk that, just needed to make sure it wasnt the phone at fault, as it was only a few days old, but guess it was the card!
lets hope it goes ok from now on! lol
Click to expand...
Click to collapse
Sorry to hear that.
I've never blown out a ram stick or SD card.
Remember they can be destroyed by one ESD event; their data ports have limited ESD protection. It can happen instantly or fail weeks even years latter, multiple smaller ESD insults can cause accumulative damage over time as well.
•Never touch the contacts.
•Keep static charges low by keeping RH at 50% or higher in the room.
Lol no wool sweaters.
•Touch yourself to an earth ground to discharge any static buildup or use an ESD strap/mat to keep everything near the same potential.
A little extra care can avoid a lot of cursing latter on...

blackhawk said:
Sorry to hear that.
I've never blown out a ram stick or SD card.
Remember they can be destroyed by one ESD event; their data ports have limited ESD protection. It can happen instantly or fail weeks even years latter, multiple smaller ESD insults can cause accumulative damage over time as well.
•Never touch the contacts.
•Keep static charges low by keeping RH at 50% or higher in the room.
Lol no wool sweaters.
•Touch yourself to an earth ground to discharge any static buildup or use an ESD strap/mat to keep everything near the same potential.
A little extra care can avoid a lot of cursing latter on...
Click to expand...
Click to collapse
Only ever had one sd ever fail a Toshiba one!
And a pirate one sent from Amazon Warehouse as like new!!!!
Mend pc's in spare time,. so know all about static, perhaps this card was stored next to wooly jumpers in Amazon warehouse! lol
Trust me to get a faulty one!

jools2001 said:
I did all the low level format, on both cards, but it still didnt stop the card playing up in my Note 10, and actually corrupting 2 pics,
so i wasnt going to risk that, just needed to make sure it wasnt the phone at fault, as it was only a few days old, but guess it was the card!
lets hope it goes ok from now on! lol
Click to expand...
Click to collapse
jools2001 said:
Only ever had one sd ever fail a Toshiba one!
And a pirate one sent from Amazon Warehouse as like new!!!!
Mend pc's in spare time,. so know all about static, perhaps this card was stored next to wooly jumpers in Amazon warehouse! lol
Trust me to get a faulty one!
Click to expand...
Click to collapse
If you play with a good ESD meter you'll be amazed how much of charge you can build up on almost any nonconductor. Once the RH drops below 20% ESD becomes very problematic and widespread.
High G impacts ie dropping a chip onto concrete from 3 feet can also kill a chip.
ESD is what kills most of these cards and ram sticks though. If you can see, feel or hear static it's already enough to damage semiconductors. Punch a microscopic hole through an insulation layer only a couple microns thick (doesn't take much voltage to do that) and it's a done deal.
Their service life is tens of thousands of cycles so it's doubtful one will wear out prematurely if used with care. High cycle usage though can wear them out.
My oldest flash cards are 16 yo and still functional.

I've had multiple SanDisk cards fail and a PNY. I've had really good reliability with the Samsung EVO Plus and Select cards.
You can pick up a 512GB Samsung EVO Select from Amazon for under $80.
Sent from my SM-N976V using Tapatalk

Same here, sandisk cards I have used failed miserably, also kingston ones, I ended using ADATA cards, not a single one has failed, ad for speed, I really find them adequate, at least for normal std uses

gernerttl said:
I've had multiple SanDisk cards fail and a PNY. I've had really good reliability with the Samsung EVO Plus and Select cards.
You can pick up a 512GB Samsung EVO Select from Amazon for under $80.
Sent from my SM-N976V using Tapatalk
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Click to collapse
When you say "fail" what do you mean?
A low level format couldn't recover it?
Showed multiple bad sectors?
These cards can be corrupted fairly easily but can be completely salvaged with a low level format.
Without it they will be inaccessible and seem to be "dead". Even new cards can do this.

blackhawk said:
When you say "fail" what do you mean?
A low level format couldn't recover it?
Showed multiple bad sectors?
These cards can be corrupted fairly easily but can be completely salvaged with a low level format.
Without it they will be inaccessible and seem to be "dead". Even new cards can do this.
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Click to collapse
I mean as completely dead and unusable. It would not recognize the partition. Sandisk had released a bad batch of 128GBs a while back. They were unreadable on multiple devices.

gernerttl said:
I've had multiple SanDisk cards fail and a PNY. I've had really good reliability with the Samsung EVO Plus and Select cards.
You can pick up a 512GB Samsung EVO Select from Amazon for under $80.
Sent from my SM-N976V using Tapatalk
Click to expand...
Click to collapse
gernerttl said:
I mean as completely dead and unusable. It would not recognize the partition. Sandisk had released a bad batch of 128GBs a while back. They were unreadable on multiple devices.
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Click to collapse
May have been dead but a corrupted card will behave like this. A 3rd party PC low level formatting app can access these corrupted cards and repair their file structure.
Normal formatting tools like Windows one will do nothing if it even can register their presence at all.

blackhawk said:
May have been dead but a corrupted card will behave like this. A 3rd party PC low level formatting app can access these corrupted cards and repair their file structure.
Normal formatting tools like Windows one will do nothing if it even can register their presence at all.
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Click to collapse
When I mean dead, I mean DEAD. I was unable to do ANYTHING. The partition was not even readable. I used different tools like Recuva and EASUS and got nothing. I've been using SD cards for YEARS. I know how to fix them.

gernerttl said:
When I mean dead, I mean DEAD. I was unable to do ANYTHING. The partition was not even readable. I used different tools like Recuva and EASUS and got nothing. I've been using SD cards for YEARS. I know how to fix them.
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Click to collapse
If the computer software can't read what's there you won't see any partition. Androids wuv to do that.
That doesn't mean it's dead... as long as you have a low level formatting tool that it shows up when connected it probably is salvageable. Make sure any needed Window drivers are loaded...
If you've had multiple failures it's time to reexamine what you're doing.
I have close to 2 dozen flash cards with some dating back 16 years and no unrecoverable failures. Data was lost but not the bloody card!