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SD card class to get?

I've been reading that the higher class SDHC cards like class 6, 10 aren't great for random write access, small blocks, but since we run our OS/apps on the phone's internal memory and we don't do the A2SD+ stuff, should it be ok to use class 10 cards?
Or does android still do a lot of significant random access on SD cards for the sensation?

Class 10!
I use a 32GB class 10 with nearly all my apps stored on there. I don't suffer and read / write lag. All I'd say is you get what you pay for, so don't buy a cheap one

I understand but do you know if the OS does the random r/w on sdcard? I'm not running any a2sd for my apps or anything so AFAIK I could run my phone without an SD card...

well since gingerbread came out app2sd is integrated into the OS, so you can transfer your apps to your SD card or they can be internally stored
just go to settings>applications>manage applications then tap into any app (thats not a system app) and you can move it to your SD card o to the phone

?????
I'm not asking about transferring apps to SD card?!
I'm asking if the random read/write access matters since our OS and apps are on the internal 4GB memory of the phone. Does the OS use the sdcard for any operations at all?

i read somewhere in the forums that class 4 will suffice. class 10 suits those HD camcorders as the write speed is high. if i'm not wrong, the read speed is the same for all (don't blame me if i'm wrong though)

I'm actually also wondering about this. Since the sensation can record 1080p, does that mean we need a fast writing card for our phone?

I have just bought a 32GB class 4 Sandisk micro SD (£28.99 Ebay) and i have no problems at all recording video at [email protected] Mbps. It may seem slightly jerky when you are actually filming on screen but when you play it back its smmmooottthhh!! Don't buy cheap memory cards. YOU WILL REGRET IT and waste your hard earned cash!! Just a personal experience warning.

adamlayzell69 said:
I have just bought a 32GB class 4 Sandisk micro SD (£28.99 Ebay) and i have no problems at all recording video at [email protected] Mbps. It may seem slightly jerky when you are actually filming on screen but when you play it back its smmmooottthhh!! Don't buy cheap memory cards. YOU WILL REGRET IT and waste your hard earned cash!! Just a personal experience warning.
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I agree. I have a 32gb class 4 sandisk and also a 32gb class 10 lexar and both record perfectly fine (smooth recording and playback). I'm using Amaze Cam v7 with 16mb bitrate. So if it can record and playback (via connecting to USB to computer and playing on PC) smoothly, then it is more than fast enough to run the apps and constant writing apps.

nonione said:
well since gingerbread came out app2sd is integrated into the OS, so you can transfer your apps to your SD card or they can be internally stored
just go to settings>applications>manage applications then tap into any app (thats not a system app) and you can move it to your SD card o to the phone
Click to expand...
Click to collapse
It was actually Froyo that bright A 2SD, mate!
Sent from my Sensation using xda premium

I ordered Lexar 32gb class 10 card from Amazon Tigerdirect seller for 48$... Will get it in couple of Weeks... I think class 10 is good fir sensation and is also future proof...
Spending once is better then spending twice later...

Does anyone have problems with the 8gb micro sd with 3gb or less free?

Does anyone have problems with the 8gb micro sd with 3gb or less free?

jp23 said:
Does anyone have problems with the 8gb micro sd with 3gb or less free?
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Like what problem?

Yes. What kind of problems. I have 2GB free and use to have less.

maybe he mean does we hava anything wrong with that case.

my problems are:
i have the original microsd 8gb class 2 when i put some videos, music or pictures and the capacity it's over 5gb, when i restart the phone the "preparing microsd" notification doesnt dissapear and i never take the phone control back except when i release the battery and put it back and change the microsd.
I've bought microsd 8gb class 4 and the same happens.
it's there any solution?
i'm using 4gb class 6 and no problems but i need more space.

Your problem is the SDCArd in general, I was nearly trowing away my XT720, bought an new SD card from ADATA and same problem. My last hope was an new Quality SDcard now with a "Samsung Micro-SDHC 16GB Class 10 - Plus-Serie MB-MPAGA" I have a new phone , no errors, no restarts, didient have to "battary reset" since i have that card.
The investment in a good SDCARD is (IMHO) the best you can do to your phone.

[Q] Micro SD No Faith

I have tried both a 64gb and a 32gb micro sd card and if I try to save or backup my documents on it sooner or later a few weeks down the road my Note Pro 12.2 reports that I have a corrupt card. I never take it out so that is not the cause. I do not have any apps installed on the card. I am not rooted.
All I am trying to do is keep my music, videos, pictures, and a copy of word and excel files on a micro sd card but I have no trust that my micro sd card is going to work.
I have formatted these cards using my Note Pro. I have formatted these cards using my Windows PC. But several weeks down the road I get the corrupt disk error... please reformat!
Is rooting the answer?
Any help is appreciated.

Sounds like a bad card to me. What brand is it?
Sent from my SM-P900 using Tapatalk

This usually happens with low-class or cheap-brand cards.
In general you're best off only using class 10 or above cards by Sandisk or Samsung. Anything else is highly unstable.

I have a San Disk Class 10 64gb but my other card is a PNY Class 6 32gb. I guess I'll look at getting a Samsung? I believe I had read somewhere about this device not liking 64gb cards? Or maybe I read something about it not allowing files to be saved to external storage. Something Samsung was doing.
Anyway thanks for the input. I would like to use a 32gb card as I really don't need 64gb so if my PNY isn't going to work I need to get something that will.

How does this card look?
http://www.amazon.com/Samsung-Elect...3974869&sr=1-2&keywords=samsung+micro+sd+card

If that samsung is as fast as it's rated that looks like a good card.
I'm using the Sandisk Extreme Plus 64gb but have only had it for a month and a half. So far no issues but I wonder if it too will be a time bomb.

muzzy996 said:
If that samsung is as fast as it's rated that looks like a good card.
I'm using the Sandisk Extreme Plus 64gb but have only had it for a month and a half. So far no issues but I wonder if it too will be a time bomb.
Click to expand...
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I ordered it since it was only $27 & I had a $25 gift card.

Mickeylittle said:
I have a San Disk Class 10 64gb but my other card is a PNY Class 6 32gb. I guess I'll look at getting a Samsung? I believe I had read somewhere about this device not liking 64gb cards? Or maybe I read something about it not allowing files to be saved to external storage. Something Samsung was doing.
Anyway thanks for the input. I would like to use a 32gb card as I really don't need 64gb so if my PNY isn't going to work I need to get something that will.
Click to expand...
Click to collapse
There's no issue with 64GB cards. There's no issue with 128GB either. Some of the older devices had issues with SDXC UHS-I cards, but that was over a year ago.
There is, however, an issue with Android KitKat no longer allowing non-stock apps to write to the SD card. That's Google's doing. It has nothing to do with corrupt cards.
Samsung and Sandisk cards are both excellent. Just make sure they're class 10 or higher.

muzzy996 said:
If that samsung is as fast as it's rated that looks like a good card.
I'm using the Sandisk Extreme Plus 64gb but have only had it for a month and a half. So far no issues but I wonder if it too will be a time bomb.
Click to expand...
Click to collapse
ShadowLea said:
There's no issue with 64GB cards. There's no issue with 128GB either. Some of the older devices had issues with SDXC UHS-I cards, but that was over a year ago.
There is, however, an issue with Android KitKat no longer allowing non-stock apps to write to the SD card. That's Google's doing. It has nothing to do with corrupt cards.
Samsung and Sandisk cards are both excellent. Just make sure they're class 10 or higher.
Click to expand...
Click to collapse
What is the best method to copy delete movies to/from my micro SD card? Should I unmount it and remove it or should I power off my tablet and remove it. Or will it be better just to copy them from a USB stick to the card while the card is still in the tablet? I'm hoping to keep 10-15 movies on my card and swap them off to put more on probably every 6 weeks and I want to know which way is the best way not to harm my card.

Mickeylittle said:
What is the best method to copy delete movies to/from my micro SD card? Should I unmount it and remove it or should I power off my tablet and remove it. Or will it be better just to copy them from a USB stick to the card while the card is still in the tablet? I'm hoping to keep 10-15 movies on my card and swap them off to put more on probably every 6 weeks and I want to know which way is the best way not to harm my card.
Click to expand...
Click to collapse
Unmount the SD card through Settings --> General --> Storage --> Unmount SD Card.
Or connect the tablet via USBcable to the PC and copy it onto the SDcard that way. (It loads as a network device in explorer)
I've got 11 films, two shows and a handful of concerts on my MicroSD and swap regularly, I usually use one of these two methods.

For me, I use a MacBook Pro which for some reason does not allow me USB 3.0 connectivity to the tablet (driver issue I'm sure but try as I might I have never gotten it to work). I therefore use a USB 2.0 cable and Kies to copy files to the tablet that way. I'm able to pick the external card as a destination and transfer at USB 2.0 speed.
Sent from my SM-P900 using Tapatalk

Thanks for all the help everyone. Hopefully with the new card coming Wednesday my problem will be solved.

I have and use a 64GB SanDisk Micro SD Card on my P900 and can open, copy, move files from and to the sdcard using samsung's stock file manager (My Files) without any problems.
Sent from my SAMSUNG-SM-N900A using XDA Free mobile app

64 gb Memory card

I'm planning to buy a 64GB memory card for HTC A9 and bind it as its internal memory. Could you guys suggest on this?
1. If anyone is using 64GB card, can you advise what are the specs I need to look it? I have read couple of reviews and seems "SAMAUNG -EVO + and SAMSUNG -EVO-" to be good. Any further suggestions?
2. Is it ok to bind the 64 memory as internal memory and does it work without any problems?

Phelin said:
I'm planning to buy a 64GB memory card for HTC A9 and bind it as its internal memory. Could you guys suggest on this?
1. If anyone is using 64GB card, can you advise what are the specs I need to look it? I have read couple of reviews and seems "SAMAUNG -EVO + and SAMSUNG -EVO-" to be good. Any further suggestions?
2. Is it ok to bind the 64 memory as internal memory and does it work without any problems?
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FYI, using a PNY U3 Pro Elite card without any issues. It's one of the fastest out there for the money. I did not bind it as internal memory though, and just use it as a secondary storage just in case (that way I can always remove it and still access thru a card reader on computer).

if you are looking to format as Internal Memory; UHS II, Speed Class 10
otherwise; UHS I, Speed Class 10

ARitualSacrifice said:
if you are looking to format as Internal Memory; UHS II, Speed Class 10
otherwise; UHS I, Speed Class 10
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Click to collapse
Thanks for the info !!

I had loads of problems with this (gone through 3 super fast SD cards... with each install the software would say it was not fast enough. Just ignore it ... the software lies). For almost a year it worked fine and then I ran out of memory space for apps, and I had to constantly delete apps to make room for updates. Finally I was forced to do a factory reset. Setting the SD memory card up after a factory reset means that you can create extended memory from scratch and allows you to put all the apps where the developer has given permission to run from the SD card onto the extended memory. After factory reset and going through and moving apps to extended memory everything has worked great.

I'm using "SanDisk Extreme PLUS 64 GB microSDXC" formated as internal Storage.
No Problems so far

Just ordered a 400gb micro SD.

Been using a 200gb that came free with the purchase of the V20. Gonna pass this off to my son. I'm running out of room and wanna carry more. This 400gb should give me enough room. ?
Anybody else using one in the v30/+?

All set up. 367gb free. I can pretty much use the internal 128gb for whatever phone wise (apps), and this for the downloads and music (I store mine locally). I do have a streaming account though, but prefer my collection on my SD card.

20degrees said:
All set up. 367gb free. I can pretty much use the internal 128gb for whatever phone wise (apps), and this for the downloads and music (I store mine locally). I do have a streaming account though, but prefer my collection on my SD card.
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I like my music on the phone also. Which card did you get?

bilbo60 said:
I like my music on the phone also. Which card did you get?
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Sandisk Ultra 400GB Micro SDXC UHS-I Card with Adapter.
Some reason it won't post the link. Search for that on Amazon.

20degrees said:
Sandisk Ultra 400GB Micro SDXC UHS-I Card with Adapter.
Some reason it won't post the link. Search for that on Amazon.
Click to expand...
Click to collapse
Thanks. Found them. Probably go with the 200 GB.

bilbo60 said:
Thanks. Found them. Probably go with the 200 GB.
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Click to collapse
The Samsung cards are really good too. They offer a 256gb.

20degrees said:
All set up. 367gb free. I can pretty much use the internal 128gb for whatever phone wise (apps), and this for the downloads and music (I store mine locally). I do have a streaming account though, but prefer my collection on my SD card.
Click to expand...
Click to collapse
Wow. 400GB.
Here's the link you couldn't post for some reason, if other people need it:
Sandisk Ultra 400GB Micro SDXC UHS-I Card with Adapter - SDSQUAR-400G-GN6MA
https://www.amazon.com/Sandisk-Ultr...21160&sr=8-2&keywords=400gb+microsd+card&th=1
Also, other size choices on that page.
My last three phones (gen3 Galaxy Nexus, LG Nexus 5, Moto XT1225) didn't have microSD cards, although the 2014 Moto XT1225 (unofficial smaller version of the Moto Nexus 6) did have 64GB internal storage. I ordered a 256GB card from that page -- which eventually will be in addition to my 128GB V30+ when it comes.
Now trying to decide what my wife's LG V30 will get. That 200GB is only $73 right now and looks very tempting for her phone.

ChazzMatt said:
Wow. 400GB.
Here's the link you couldn't post for some reason, if other people need it:
Sandisk Ultra 400GB Micro SDXC UHS-I Card with Adapter - SDSQUAR-400G-GN6MA
https://www.amazon.com/Sandisk-Ultr...21160&sr=8-2&keywords=400gb+microsd+card&th=1
Also, other size choices on that page.
My last three phones (gen3 Galaxy Nexus, LG Nexus 5, Moto XT1225) didn't have microSD cards, although the 2014 Moto XT1225 (unofficial smaller version of the Moto Nexus 6) did have 64GB internal storage. I ordered a 256GB card from that page -- which eventually will be in addition to my 128GB V30+ when it comes.
Now trying to decide what my wife's LG V30 will get. That 200GB is only $73 right now and looks very tempting for her phone.
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Click to collapse
$73 for a 200gb doesn't seem bad, it's actually a way better value compared to the 400gb. But I was going for size. My 200gb held up well for the time I used it though.

20degrees said:
All set up. 367gb free. I can pretty much use the internal 128gb for whatever phone wise (apps), and this for the downloads and music (I store mine locally). I do have a streaming account though, but prefer my collection on my SD card.
Click to expand...
Click to collapse
Could you please test what's the write speed of this card for constant transfer?
Sent from my GT-I9506 using Tapatalk

DonAndress said:
Could you please test what's the write speed of this card for constant transfer?
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Click to collapse
Using "A1 SD Bench" gives the results posted below. My PC doesn't have USB 3.0 yet as this spring is my lustrum update year for the motherboard, ram and CPU. So it's not really worth testing on there.
Edit: Results posted on the following post. I forgot to attach them and edit mode didn't give me the option of doing so.

Forgot results.

If anyone wants some stats on the card here is an post from the V20 forum and what I got of test:
Okay I got the Card of SanDisk Ultra micro SDXC UHS-I Card 400 GB "Well actually less then 400 GB because of companies continuously lies which seems to be of no end to it" and it is running much faster then my old samsung 128 evo or evo+. It's not running as fast as your 128 GB samsung pro+ but anyway il find the results. Iv made test with 3 programs on the V20.
First one is A1 SD Bench which you used:
Read 78.14 MB/s - Write 41,21MB/s
Read 78,19MB/s - Write 41,37MB/s
Read 79,45MB/s - Write 42,97MB/s
Read 78,50MB/s - Write 41,07MB/s
Then SD Card Test
Read 88 MB/s - Write 42 MB/s
Read 87 MB/s - Write 42 MB/s
Read 88 MB/s - Write 40 MB/s
Read 89 MB/s - Write 42 MB/s
and last without any advertising AndroBench:
Read 84.16 MB/s - Write 46,59 MB/s
Read 84.39 MB/s - Write 50,16 MB/s
Read 84.81 MB/s - Write 53,23 MB/s
Read 84.25 MB/s - Write 55,9 MB/s
As you can see the write is far from as good as the Card you had of 128 GB... But of cause this is 400 GB and still a good deal faster then my old ones I had. Put a lot of stuff on it already. I also found out my Laptop is getting old as it corrupts the image of the UHD video when playing.... My Mobile seems to actually have more juice in that department then my laptop as it runs fine on the mobile. I tested which quality I wanted to run on my mobile for best video results and used the Pagan New Year in the Winter for it. I did a look at it yesterday and It seems FHD and 60 frames a second gave the best results on the V20.

Jesus is God Almighty said:
"Well actually less then 400 GB because of companies continuously lies which seems to be of no end to it"
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Click to collapse
Flash memory has a finite number of writes to each page before they 'wear out' to some headroom is required to spread out the read/write cycles and manage the storage. This headroom is the difference between the actual size of the card and the amount you get to use. It's called wear levelling. An explanation can be found on Wikipedia.

400GB is a lot! If you use a program like Aftiss (which is on the forums, just give it a quick search) and use the setting "0" when formatting the card, that whole 400GB will turn into Internal Storage. I have it set up that way on my Verizon V30 with a 128GB microSD Card. Just do a backup beforehand just in case anything goes wrong (which it shouldn't.)

Charbleach said:
400GB is a lot! If you use a program like Aftiss (which is on the forums, just give it a quick search) and use the setting "0" when formatting the card, that whole 400GB will turn into Internal Storage. I have it set up that way on my Verizon V30 with a 128GB microSD Card. Just do a backup beforehand just in case anything goes wrong (which it shouldn't.)
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Click to collapse
Can you eject the card and use it elsewhere to modify its contents?

20degrees said:
Can you eject the card and use it elsewhere to modify its contents?
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i want to know this too

20degrees said:
Can you eject the card and use it elsewhere to modify its contents?
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bountyman334 said:
i want to know this too
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Probably not since the microSD becomes the internal storage where all of the "active" system & app files (user changes) are stored
edit:
the following should explain it
https://fossbytes.com/android-sd-card-internal-storage-adoptable-storage/
so it might be possible, but there are possible consequences (data corruption, system messed up, etc.) - a reject beforehand is highly recommended

20degrees said:
Can you eject the card and use it elsewhere to modify its contents?
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Click to collapse
Oops! Didn't see this reply. You are not able to remove the SD Card, well at least not recommended to, because if you removed it and some apps had placed necessary files on it, they won't be able to run. I would strongly recommend against it just because of the dangers that could come with it.

PaulNexus7 said:
Flash memory has a finite number of writes to each page before they 'wear out' to some headroom is required to spread out the read/write cycles and manage the storage. This headroom is the difference between the actual size of the card and the amount you get to use. It's called wear levelling. An explanation can be found on Wikipedia.
Click to expand...
Click to collapse
Most harddrive makers and memory card makers has always cheated with the real amount of space.
The last company I know that kept the rules of real storage was IBM who made the Deathstars as they sadly ended up being known by. They then sold there harddrive line to another company, Hitachi or something I think it was. But the thing is when you bought a 20, 40 GB or 60 GB harddrive from IBM you actually got those GB and no cheating.
---------- Post added at 09:23 PM ---------- Previous post was at 09:17 PM ----------
Charbleach said:
400GB is a lot! If you use a program like Aftiss (which is on the forums, just give it a quick search) and use the setting "0" when formatting the card, that whole 400GB will turn into Internal Storage. I have it set up that way on my Verizon V30 with a 128GB microSD Card. Just do a backup beforehand just in case anything goes wrong (which it shouldn't.)
Click to expand...
Click to collapse
I rather not as I many times pop it out and into my computer - I don't have time for the stupidity of connecting the phone to the computer and having all these issues with it which should not have been. So mostly because of frustration I end up just popping the SD out of the phone and putting it directly into my computer. Then you can do multiple things on it without any error popping up and have top speed.

I'm using the 400GB with my v30+ simply for Rom back-ups and storing my music.