Develop Bugs

[Q] Class 10 MicroSD Issues

Hello, I bought some day ago a Team 16GB class 10 Micro SD card, but my Defy freeze, expecially when I browse it with quickpic.
I see some thread about class 10 cards and someone found that a partial fix is format with 32k or 64k as file allocation unit size, and maybe another fix is set higher voltage with setsvel.
I've tried the format fix, but I gain only speed, now I'll try the second to gain the needed stability.
I read also that it's an Android kernel related issue, so we still need an official fix.
Someone know some other method?
D_L
Edit: Also the voltage tweak have failed... It's frustrating...

There maybe something related to the manufacturer. For example in my country the cheepest MicroSDHC Cards are made by Adata and Serioux (there maybe other chinesse brands but these are present at known big IT stores).
So people bought them, especially Adata ( which should be better than Serioux).
Class 6/10... and they ended up not working.
So my advice is to try with a Knigston/Kingmax/Transcend/ Sandisk( not that cheap) same 16gb and same class, see if you see a difference.
And i think Class 6 is enough... if let's say Class 10 from the manufacturers above it too expensive.
Maybe it helps.

Transcend?? um.. i don't think so, it's just the same.
perviously i had Transced 8 GB class 6,
using my old galaxy android, it's so fine and speed is good.
but after went to Defy, it was horrible.
often to cause hangs!
have to unmount / remount, which often not succeed, and have to pull out battery.
and it's especially happen when taking picture with camera or downloading + listening to mp3.
many good moments missed, can't take picture, because have to pull out the battery,
and that's embarassing, in front of my friend.
they think i have a smartphone but often hangs,
and now i know it is just because highclass sdcard.
i am using class 2 sdcard now, never get hangs.
end of problem.

I had the same problem.
I bought a 16GB class 10 SDHC ab. a month ago and when I'd been using my Defy always been freezed when I opened the Gallery or any else card related application.
I deleted the partition on the card and created a new one without LBA mode and the problem had been solved temporary. After a week it was start to make freezes again.
Actually I'm using a 16GB class 2 one (I bought it for 15 pounds as used). There's no problems any more, and it works as the same speed as the class 10 one (by the SD Tools).

I gave up and went back to a class 6 8GB Samsung, i did start a thread on the official Motorola forum if you want to go let them know about the problems, it might get them to issue a fix if more people start to complain about it. https://supportforums.motorola.com/thread/53050?tstart=30

i tot only me..
same here..
wanna sell my DNA 16GB class 10.
phone hang quite easily after change to this

So i want to buy a 8 gb card class 4 or 6 tomorrow... and it must work would CM7 . What to get ? I understand that using Sd booster or CM7 default i should get the same speed acordingly to what i set ?
Sent from my MB525 using XDA Premium App

Deonix said:
So i want to buy a 8 gb card class 4 or 6 tomorrow... and it must work would CM7 . What to get ? I understand that using Sd booster or CM7 default i should get the same speed acordingly to what i set ?
Sent from my MB525 using XDA Premium App
Click to expand...
Click to collapse
Hi Deonix.
My SD is a SanDisk 8GB class 4 and working well.
A couple days a go i try to use my other SD 16GB (class 10) and had issues, so i back to the 8GB class 4.
Some users have 16 and 32GB class 2 and 4 and they have no problems.

Thanks... i will choose a class 4 probably Kingmax. Anyone with working Class 6 8gb? what manufacturer?
Question: i will have on my 8 gb card a bunch of apps-30-40... some games including Asphalt 6 < for example>, MotoNav, and music. Out of this i think i will still have 2-3 Gb free . I don't need to transfer data from Card to PC frequently (fast i mean) maybe when it happens i will use the phone as a mass storage.
The question is: Do i need a class 6? I only need to work properly while in the phone and have a decent speed as a Mass storage from time to time.

definetely is not cm7 problem,
i thought it was.. and many people thought it too.
maybe it's froyo kernel seems little bit buggy with hiclass sdcard.
and cm7 using froyo kernel though.
using class 2 sdcard is perfect.
the speed is just the same though.
have been checked with some bencharking tools.

Both me and the missus are using class 6 samsung cards this one to be precise http://www.amazon.co.uk/Samsung-Micro-Speed-memory-Class/dp/B002WGIV10/ref=pd_rhf_shvl_44 and it works greatSD tools shows a write speed of around 10MB/s and a read speed of around 21MB/s

actually, i'll buy SD Card Team 16 Gig class 10..
any problem with froyo for class 10 ?
need more advice from u guys

Garincha13 said:
actually, i'll buy SD Card Team 16 Gig class 10..
any problem with froyo for class 10 ?
need more advice from u guys
Click to expand...
Click to collapse
many people confirm there's a problem with that,
even with 6 class sdcard.
i don't know what's going on but it's happening and annoying,
it happens on froyo, and CM7 too (FYI, CM7 Quarx uses froyo kernel).

Garincha13 said:
actually, i'll buy SD Card Team 16 Gig class 10..
any problem with froyo for class 10 ?
need more advice from u guys
Click to expand...
Click to collapse
Thats what we are all saying, class 10 cards seem nothing but a problem regardless of size. This is why i went back to the class 6 samsung and posted a link to it cos i know it works.

Just bought a 8 gb Kingston class 4. Will report speed and any other issues as soon as i install CM7 with it.
Hope it works well. It's an Android Kernel issue from Froyo on the Class 6/10 crashes as i can understand.. nobody's fault ( here on XDA i mean). Still some work.
Also i remain strong on my position.
Choose your manufacturer wisely even if it costs 10-20$/i dunno how much more.

I use kingmax 16gb class10 allways hang,
so bad,
use class 4 or 2 batter
Sent from my MB525 using XDA Premium App

i nearly bought a 16GB Lexmark class 6 card today but i dare not in case it didnt work, this is a crap situation.

Same here - Froyo 2.2.2 and Transend 16GB Class10 - freezes at random basis and random applications. No issues with 8GB Class 4.

I have similar problem, how do I know the class of the card? It is I believe a Kingston, I've had it for ages.
Also if it is relevant to someone, I have a Defy from CEE distribution, with Froyo.

Fabo.sk said:
I have similar problem, how do I know the class of the card? It is I believe a Kingston, I've had it for ages.
Also if it is relevant to someone, I have a Defy from CEE distribution, with Froyo.
Click to expand...
Click to collapse
You can check if the class is printed on the card. Usually it is a number inside a letter "C" (like a full circle).
You can see the images here:
http://en.wikipedia.org/wiki/Sd_card#Speed_Class_Rating

microsd samsung 32 gb class 10 lag and problems

hi, i'm using the latest firmware 4.0.2.A.0.58 firmware and I have a problem.
When I insert my 32gb microsd the phone become laggy and it seems freezed.
I tried the card on the pc, did a surface test, and it is perfect.
When I unmount the card the phone works properly.
If i use another 16gb microsd the phone still working properly.
So..what's the matter?does anyone noticed the same issue?
thank you!

No, mine works fine
Check my sig for more info on my sd and setup
Sent from my LT15i using XDA Premium App

It takes a time for phone to read out and sync media player if you got lot of music, videos, picture games etc.
Sent from my LT15i using XDA Premium

loryb84 said:
hi, i'm using the latest firmware 4.0.2.A.0.58 firmware and I have a problem.
When I insert my 32gb microsd the phone become laggy and it seems freezed.
I tried the card on the pc, did a surface test, and it is perfect.
When I unmount the card the phone works properly.
If i use another 16gb microsd the phone still working properly.
So..what's the matter?does anyone noticed the same issue?
thank you!
Click to expand...
Click to collapse
may be your memory card carry viruses so try to format it and then format your cell phone also(reset configuration with erase memory card)....may be this could solve your problem...

I see that you guys all use a class 10 card. Is there really a big difference compared to lower class cards?
My phone worked smooth enough with the stock 8GB class 2 card, and my current Transcend class 4 16GB doesn't harm the phone's performance.

class 4 is enough, on phone you will not see any DIFRENCE.
When you connect your phone to PC over USB and conect it to mass storage, you will see then POWER OF CLASS 10. faster uploading to PC, and faster dowloading from PC.
On phone class 10 and class 4 are the SAME.

Well, I noticed a difference and prefer the class 10 all the way.
Sent from my iPad 2 using Tapatalk

Hi hi Ok I have a problem and hoping someone can help...
I purchaced a kingston 32GB class 10 memory card and plagued with issues since having it.
My setup is...
Arc LT15
.42 Firmware
Advanced stock kernel
32GB class 10 memory card
Now the problem is images and videos and apps.
Apps...
They keep ramdom uninstalling if they are stored on the memory card
Videos/pictures
Any I have taken since installing the card become corrupted. Even screenshots.
IE I took a screenshot and it displayed on the phone, I went to gallary and viewed it fine.
Came to home screen and back to gallery still fine.
Left some time went to gallary and corrupt.
Cannot be viewed even by PC
This also happened to videos.
I had this problem so installed a totally fresh se rom updated via SEUS (I think)
Cleared dalvik cache and user cache etc manually installed the apps from the card etc etc used no backups apart from contacts backup
Everything was totally clean.
Even my language from swiftkey keyboard app keeps deleting randomly :/
Still getting the issue :/ Is there anything i'm missing?
Thanks,
Jinx13

Hey guys... read cearfully!
The class 10 approx parameters are... Read- 22 mb/s write 10 mb/s
The class 4 are Read 10 mb/s Write 4 mb/s...
So why your phones working bad with class 10?
Because those are linear read-write speeds...and you are using it only while USB connection by moovie transfer or watching... What is the rest card usage?
It is random read-write or seqental read-write used by yor apk's or fo example thumbs of stock gallery.
These speeds are for class 10 - 0.08 mb/s
class 4 - 0.8 mb/s
See the difference now? So class 10 is good for DSLR cameras or mediaplayers etc. Class 4 perfect for phone. Mine 32gb class 4 just flying!!!!!

So your saying 32GB class 10 is not supported fully by the ARC?
Jinx13

I don't get you.
SD speedtest apps give me ~10MB/s write and 20+MB/s read, so it's supported.
Also it feels faster than a class 4 (class 4 vs class 10 was tested in my X10, but Arc is even faster)
Sent from my LT15i using XDA Premium App

It is linear speeds...like you are reading or writing moovie or some one solid big file...
But the system uses random read of small files... And there class 10 looses. On class 4 compared to class 10 in gallery 1000+ photo thumbnails appears in seconds.
Try crystall disc mark software to test your card on PC and you will see. Test config is 5 tests at 100mb...pay attention at 4K and 4Kq32 speeds. At class 10 they are 0.04-0.08...

Ah
Anyways, I'm happy with my 32GB class 10
Sent from my LT15i using XDA Premium App

Ofcourse you are! I just wanted to make it clear for those who says that it is lagy or like that...

But it isn't laggy with the class 10 when you have a good sd card.
The cheap Kingston 16GB class 10 from eBay lagged often in Astro, but no problems with my Patriot 32GB class 10 sd card
Sent from my iPad 2 using Tapatalk

So can anyone explain why I might have problems?
From my previous post I just rebooted my phone and lost my SD apps AGAIN!!

Yep! Patriot is one of that card of class 10 that gives you a great performance in any type of R/W. There is a post here, on XDA...there said that patriot is the best card, so my answer is not for you man)))))
About sd apps loss you shold check your app wich provides managment of apps to sd card - links2sd or what it is... the promlem is not in the card.

Or check the sd if it corrupts files.
Sent from my iPad 2 using Tapatalk

ishishkin said:
Yep! Patriot is one of that card of class 10 that gives you a great performance in any type of R/W. There is a post here, on XDA...there said that patriot is the best card, so my answer is not for you man)))))
About sd apps loss you shold check your app wich provides managment of apps to sd card - links2sd or what it is... the promlem is not in the card.
Click to expand...
Click to collapse
It is not that program as that program just points to the settings page to move the file.
I have decided to put my 8GB class 2 back in and that is working without problems.
Flo95 said:
Or check the sd if it corrupts files.
Sent from my iPad 2 using Tapatalk
Click to expand...
Click to collapse
Yes it corrupts the images and videos from gallary
After testing with my old card since yesterday I will try send my card back.
Thanks for replies,
Jinx13

I bought a Kingston 16GB class 10 - Full of problems (returned)
Then a Kingston 32GB class 4 - better results but not that speedy
Now I found for 46euros here in Greece a Samsung 32GB class 10 so I said I have to try this.. and voila! The card is perfect, no lags! The phone is super speedy now!
So I guess it have to do with the cards not the brand.. if you re lucky you will end up with a good card.

Will A 16GB OR 32GB MEMORY Card MAKE a SAMSUNG GALAXY ACE Slow

i wana to have a new MicroSD Card for my Samsung galaxy ace i have 2 options:
Transcend Memory Card MicroSDHC 8GB class 10
​or
16GB class 4 almost same price online,and
my Galaxy ace is 278 MB RAM and 800MHz processor will i get smooth experience if i use 16GB card....so what to do plz reply ASAP.

nope they wont

I don't think that is how storage works, It should be fine.

If you were one of my Soldiers you would be doing pushups right now. The only downfall of a bigger SD card is the little bit it'll take to scan it upon bootup and upon unmounting it from your computer.

It should not slow down the device all the time, but during boot when scanning the card, but otherwise you should not notice a lag.
Sent from my R800x using xda premium

zeeky120 said:
It should not slow down the device all the time, but during boot when scanning the card, but otherwise you should not notice a lag.
Sent from my R800x using xda premium
Click to expand...
Click to collapse
it's really more post boot, than during boot. after the phone starts, then there's be a delay when it has to scan the device.

Thats good I will buy 32gb...

32GB support your phone or not. Then buy a class-6 or class-10 memory.

its not if u buy min class 4 or 6.....

stevenkhan168 said:
32GB support your phone or not. Then buy a class-6 or class-10 memory.
Click to expand...
Click to collapse
my phone does support up to 32GB...but i don't have such need..

Thank you all for u'r reply i have got my self a 8GB class 10 @650 and i am good access speed
read spedd18MBPS
write speed:10Mbps

8 GB Best.

i know there are different classes of memory cards but i dont think its that much of a difference memory cards arnt like ram where the effect the speed of your phone a noticeable amount

I also want to try 32gb to my device

Then again the more stuff you have on it, the more time it would take to index and find things bit its not really like a hard drive so it won't have fragmentation

uhs-1
what do you guys think of UHS-1 cards I found one for a nice price 16gb
Baud rate:
Reading:up to 20 MB/sec
Random read (4 KB)up to 500 IOPS
Random entry (4 KB)to 50 IOPS

I personally use a 16GB class 10 card, was made by Lexar...
It was only £15.50 and came with a USB and SD card adapter, can't complain...
Real speeds are about 11.5mb/s write, and 16mb/s read
Hope this helped you decide...

no make it slow

SGT_Watkins said:
If you were one of my Soldiers you would be doing pushups right now. The only downfall of a bigger SD card is the little bit it'll take to scan it upon bootup and upon unmounting it from your computer.
Click to expand...
Click to collapse
Wow!!! I just thought it was my phone. LOL
Sent from my LG-P999 using xda premium

samsung galaxy ace
Hi im looking at getting mircro sd card for my samsung galaxy ace, i have a 8gb class 4 in at the moment but im looking at getting this:
32GB MICRO SDHC MEMORY CARD WITH SD ADAPTER TF HC MICROSD
****** 5 Year Warranty. Class 6******************
Would this also work? any help would be great

[Q] galaxy note 2 N7100 compatible memory card?

hello folks,
I recently bought the samsung galaxy note 2. i want to buy a 32 gb memory card for it. so can you pls. suggest me which type of memory cards are compatible with my note 2.

arunsannigeri said:
hello folks,
I recently bought the samsung galaxy note 2. i want to buy a 32 gb memory card for it. so can you pls. suggest me which type of memory cards are compatible with my note 2.
Click to expand...
Click to collapse
This really should go in the Q&A forum, but ... Samsung makes microSD cards. If those aren't "compatible" I wouldn't know what else could be.
Actually just about any class 10 memory card will do.

Yeah pretty much any Microsd will work on the note2. Choose Samsung, SanDisk, Kingston, Adata etc
Sent from my GT-N7100 using xda premium

I recently bought a 64 gb class 10 san disk micro sd card...it says ...they are the fastest...but hey...i am over happy with it...just installed the ex2sdinternal memory script ...it simply swaps your memory...e.g...my internal memory is now 64 gb...and my sd memory is 16 gb ....nice?
Now i can install any big gameloft and ea games without worring about directory bind and there freezes and force closes...
I really advice you to buy a 64 gb...it is cheap..i bought it with a adapter for 55€..it should be 70-75 $ max.
Sent from my GT-N7100 using xda premium

Is class 10 really important ?
Speed class corresponds to the burst write speed, which is important for devices like high end cameras. Since I have a class 4 and have no problem filming in HD, I suppose it isn't a necessity for the Note2.
Maybe more important are the read speed and IOPS (for small files) but I don't know where to find these data.

aloush5592 said:
..just installed the ex2sdinternal memory script ...it simply swaps your memory...e.g...my internal memory is now 64 gb...and my sd memory is 16 gb ....
Click to expand...
Click to collapse
Will you provide me a link for apk download... I can't find it on play store..
Thanks

Suitable MicroSD card for App2SD?

Hey guys,
I've been trying to search through forums trying to understand if it's necessary to get a class 10 micro SD card for running apps from SD. But I can't get a definite answer and would like to know from someone who has tried and tested a class 4 and a class 10 with apps2sd and if there was much of a difference. I'm planning to head out tomorrow and purchase a card so any input is highly appreciated. I don't really care much about transferring speed for media such as songs and videos to and fro a PC but more for gaming. I'm leaning more towards a SanDisk 32GB class 4 as its readily available at the local stores and very affordable.
Sent from my GT-N7100 using xda app-developers app

bushako said:
Hey guys,
I've been trying to search through forums trying to understand if it's necessary to get a class 10 micro SD card for running apps from SD. But I can't get a definite answer and would like to know from someone who has tried and tested a class 4 and a class 10 with apps2sd and if there was much of a difference. I'm planning to head out tomorrow and purchase a card so any input is highly appreciated. I don't really care much about transferring speed for media such as songs and videos to and fro a PC but more for gaming. I'm leaning more towards a SanDisk 32GB class 4 as its readily available at the local stores and very affordable.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
Well the class of the card not only help in trsnsfering file fast but it even helps in rendering of games and app like loading time , it helps the phone to process faster the job as while clicking pictures it helps to reduce the lag thing as u can click instant shot simultaneously.
So a class 10 is preferred since san disk have issue running with note2 so samsung sd is recommneded though I myself Is using sandisk class10 but not with app2sd so I had faced no prob yet

I have 32GB SanDisk Class 4 .. I never had any issue.. I use FileMount to put my huge apps in the SD card, never had issues with them even though they are high graphics games..
The reading speed is about 300-500 mb/s I think.. Which enough to make anything run very smoothly ..
Sent from my GT-N7100

I also run a class 4 32gb card. It's too small though.
When I bought this for my EVO I was advised not to buy a class 10. Something about the read speed being slower I think? ?
Sent from my GT-N7105 using xda app-developers app