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Hi, i bought some days ago an 8GB class 10 micro sd card, hoping it would speed up my phone (i was using app2sd+ with Kyrillo's ROM v7.1).
I didn't notice any diference compared to my old 4GB class 2 card, so i installed SD Tools app to test the speeds, and i realized all the cards i put in my phone get 4MB/s as the maximun write speed, i tried many different sd cards, class 2 and 10 and there's no difference. Then i tried the same cards in my girlfriend's Galaxy Ace and the speeds were much higher, 7~12 MB/s write speed.
I thought it was a rom problem, so i backed up with Titanium Backup and flashed a stock ROM (JPM), but the speeds remain the same (around 4 MB/s for writing), i also tried changing the buffer size from 128kb to 1024, 2048, 4096 with "SD Booster" and "SD Speed Increase" apps, but no good results...
Could my phone be faulty?
Is there any configuration i can try to make my sd card faster? any command line?
What are the speeds you reach with "SD Tools" and classes of your SD card?
Best Regards!
I'm not sure, but I think there's nothing you can do....
Mine is a 16GB class 6 and it's the same, whatever I try. Before had 8GB - was the same.
Whatever I wrote into the 'read ahead buffer'...
But maybe anyone else has an idea?
Try changing the buffer to 0 as sometimes that works.
Sent from my GT-I5800 using XDA App
dilzo said:
Try changing the buffer to 0 as sometimes that works.
Click to expand...
Click to collapse
TNX for the tip, but unfortunately SAME RESULT...
i also get the same speeds..
i think thats a bug with sd tools.
By the way has any one tried data2sd/apps2sd v3? do you face lags?
also do you people have SD or SDHC
I belive that sdtools has a bug. Or is seriously faulty. I have 16GB class 2 sdcard and sdtools claims that my read and write speeds are equivavlent to class 6 card (values range from 6.x/6.x to 8.x/7.x, write/read, respectively (depending on read_ahead_kb values). And I know for a fact that this really cheap sdcard does not have such performance. You can try antutu benchmark, free app on market, which provides a bit more accurate results plus you can select what to benchmark. My card gets 3.0MB/s read and 2.0 MB/s write with default buffer values. Which is more accurate than sdtools. Especially because disks (any kind) usually have higher read rate than write rate (because it is easier to read data than to write it and 'cause we usually perform much more reading than writing, so it is optimized for read operations).
mrvek said:
I belive that sdtools has a bug. Or is seriously faulty. I have 16GB class 2 sdcard and sdtools claims that my read and write speeds are equivavlent to class 6 card (values range from 6.x/6.x to 8.x/7.x, write/read, respectively (depending on read_ahead_kb values). And I know for a fact that this really cheap sdcard does not have such performance. You can try antutu benchmark, free app on market, which provides a bit more accurate results plus you can select what to benchmark. My card gets 3.0MB/s read and 2.0 MB/s write with default buffer values. Which is more accurate than sdtools. Especially because disks (any kind) usually have higher read rate than write rate (because it is easier to read data than to write it and 'cause we usually perform much more reading than writing, so it is optimized for read operations).
Click to expand...
Click to collapse
antutu give me 3.x and 4.x for write and read speed respectively!!
8gb class 10
That is odd. Do you have a card reader? Maybe you can bench from pc and see the results. I have only 2 sdcards, both class 2 and the results I get are to be expected from class 2 cards. There is also possibility that it is a low quality component. If you feel like it try to investigate, get cards info like serial, model and manufacturer and see what you'll discover. Nowadays people are selling everything claiming it to be a better than actually is. I remember reading tests regarding SD 's where they said that same card type from same manufacturer performed about 10 times worse just because one was.made in China and the other in taiwan, or something like that. I personally would do some research but it's up to you.
mrvek said:
That is odd. Do you have a card reader? Maybe you can bench from pc and see the results. I have only 2 sdcards, both class 2 and the results I get are to be expected from class 2 cards. There is also possibility that it is a low quality component. If you feel like it try to investigate, get cards info like serial, model and manufacturer and see what you'll discover. Nowadays people are selling everything claiming it to be a better than actually is. I remember reading tests regarding SD 's where they said that same card type from same manufacturer performed about 10 times worse just because one was.made in China and the other in taiwan, or something like that. I personally would do some research but it's up to you.
Click to expand...
Click to collapse
well i did a bench mark from laptop's card reader.. it was way over 18 mbps.. cancelled the benchmark in the process as it was taking too long.. but half way read speed was definitely above 18mbps.. Also my sdhc's manufacturer is transcend. I hope this company wont betray us!!
well, in that case it might have to do with phone configuration/programming. Maybe devs could figure out why the phone does not utilize full potential of the sdcard. Perhaps low ram, (relatively) "slow" cpu, something...
mrvek said:
well, in that case it might have to do with phone configuration/programming. Maybe devs could figure out why the phone does not utilize full potential of the sdcard. Perhaps low ram, (relatively) "slow" cpu, something...
Click to expand...
Click to collapse
Good point. Hope some dev is listening!!
I have the same problem.
Samsung Galaxy 3 GT-i5800, Android Froyo firmware v2.2 build XWJPL.
I tested with two class 10 microSD cards, quality ones, but got poor transfer rates.
card1: Transcend 8GB MicroSDHC Class10 (TS8GUSDHC10) - up to 20 Mb/s
card2: Samsung 8GB SDHC Plus Class10 (MB-MP8GA/EU) - Read max. 24 Mb/s, Write max 21 Mb/s
Samsung 8GB cl10 test result (SD Tools app): Write: 4.4 Mb/s; Read 5.1 Mb/s
The card write speed should be higher than 10 Mb/s
hi all,
i got my A9 2 days ago and have a fault with it rebooting randomly and will be getting it replaced,,
but my question is about the SD card aspect..
i fitted a Lexar 64GB Class 10 High Speed Micro SDXC Memory Card and after formating as internal and migrating the data i had a system message saying that the card was slow and suggested using a card class 3 or better.
is this normal? have not noticed any performance issues since doing so.. just curious to see if anyone else has had similar messages after putting in the SD card.
I might be off base here, but is it possible that the card itself is a fake? Have you run a speed test on it?
jellmoo said:
I might be off base here, but is it possible that the card itself is a fake? Have you run a speed test on it?
Click to expand...
Click to collapse
have run a couple of tests but not sure what speeds i should be getting for this card..
cant post a screen shot yet as im a new user..
the results from an extended accurate test
are
1.52 GHz
read 38.6Mb/s
write 38.6Mb/s
when running one of the tests it did say that its cached the data as either there was too much free space or the SD card is slow.
Honestly, that's a little weird. The results seem a little low for a high end new card which should have speeds of 80Mb/s and up, but also too high for a fake which is usually lower than 10Mb/s.
Since you're getting the device replaced anyway, it might be a good idea to re-check once you have the new unit just to make sure it isn't some bizarre issue with that specific handset.
To compare, I've currently paired my A9 with a 32GB Samsung Pro card, and haven't seen such a warning message.
Download A1 SD Bench from the PlayStore.
Tikerz said:
Download A1 SD Bench from the PlayStore.
Click to expand...
Click to collapse
the results are from that app.
jellmoo said:
Honestly, that's a little weird. The results seem a little low for a high end new card which should have speeds of 80Mb/s and up, but also too high for a fake which is usually lower than 10Mb/s.
Since you're getting the device replaced anyway, it might be a good idea to re-check once you have the new unit just to make sure it isn't some bizarre issue with that specific handset.
To compare, I've currently paired my A9 with a 32GB Samsung Pro card, and haven't seen such a warning message.
Click to expand...
Click to collapse
what speeds are you getting?
I have a SanDisk 128GB class 10 and I get 43.70MB/s read and 12.45MB/s write using A1 SD Bench.
So I bought a Samsung EVO+ SDHC card on Amazon and I am trying to figure out if I got hosed. It is a UHS-1 card and is supposed to get write speeds up to 20MB/S, but I am getting 5-8... I have it mounted as an external card. I've tried 2 different speed test apps on Android. Do these speeds sound like what I should be expecting?
When I put the card in, I originally set it as internal, but the phone gave me a warning the card was slow (another not-so-good sign).
Should I try to return it to Amazon and just buy some place locally?
Link to item?
Sent from my XT1650 using Tapatalk
I bought this SanDisk Extreme 64GB MicroSDXC UHS-1 card about two weeks ago, working great! No speed warning when I set it as internal. Rated up to 90 MB/s, and I just measured 61.82MB/s Read & 55.87MB/s Write. Maybe you got a knockoff?
This is the one I got: https://www.amazon.com/gp/product/B0118LR9Z8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Which app did you use to test the speed? I am wondering if my issue was that I was looking at random write speeds instead of sequential. I found several references around the Interwebs that show similar performance. The faster speeds seem to be sequential writes..? Could that be my issue?
One of the apps I tried did identify it as an actual Samsung card, but perhaps it was a slower class card relabeled?
I used A1 SD bench.
I tried 2 different Evos and can Evo+ and the phone didn't like any of them.
I had to but a Pro+ for it not to contain about the card bring slow.
TheKaz said:
This is the one I got: https://www.amazon.com/gp/product/B0118LR9Z8/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Click to expand...
Click to collapse
Note - the Samsung card is a U1, compared the SanDisk Extreme which is U3. Big difference, lol. Make sure to get a UHS-1 U3 or higher card to eliminate speed issues.
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.
Click to expand...
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.
Click to expand...
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?
Click to expand...
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"
Click to expand...
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.)
Click to expand...
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?
Click to expand...
Click to collapse
i want to know this too
20degrees said:
Can you eject the card and use it elsewhere to modify its contents?
Click to expand...
Click to collapse
bountyman334 said:
i want to know this too
Click to expand...
Click to collapse
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?
Click to expand...
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.
Hi
Can you post your micro sd read/write speeds ?
Only 18mb/s for my SanDisk Extreme PRO 64 Gb U3. It's very slow... It was able to reach 80mb/s on my GS7.
Tested with A1 SD bench app.
Thanks
Seb122 said:
Hi
Can you post your micro sd read/write speeds ?
Only 18mb/s for my SanDisk Extreme PRO 64 Gb U3. It's very slow... It was able to reach 80mb/s on my GS7.
Tested with A1 SD bench app.
Thanks
Click to expand...
Click to collapse
Unfortunately It's a firmware limit
Zazzinho said:
Unfortunately It's a firmware limit
Click to expand...
Click to collapse
A firmware limit ? What is the purpose of limiting sd card speed ? Or maybe it's a hardware limit ??
Also tried with sandisk ultra U3 A1 and it was around 18mb/s. It's crazy slow, I would recommand not to buy expensives SD card for this phone...
Too bad, sd card r/w speed are too slow to use it as system storage.
How a SD845 device can obtain that poor result ??
Seb122 said:
A firmware limit ? What is the purpose of limiting sd card speed ? Or maybe it's a hardware limit ??
Also tried with sandisk ultra U3 A1 and it was around 18mb/s. It's crazy slow, I would recommand not to buy expensives SD card for this phone...
Too bad, sd card r/w speed are too slow to use it as system storage.
How a SD845 device can obtain that poor result ??
Click to expand...
Click to collapse
Cause i've tryed multiple sd card high range and the speed it's always 18 mb/s...anyways i don't think 2018 top hardware can't write more than 18mb/s
As above, my write speed is also 18 Mb/s - it's a Sandisk Ultra 128 U1 card
Hi guys, I'm willing to buy one xz2 compact for me. It seems that both the big and compact have the slow sd speed issues. Could you please confirm if the read speed is also limited to 18Mb/s? Do you think it is a matter of hardware or software? Is encryption enabled? Thanks!
bethnard said:
Hi guys, I'm willing to buy one xz2 compact for me. It seems that both the big and compact have the slow sd speed issues. Could you please confirm if the read speed is also limited to 18Mb/s? Do you think it is a matter of hardware or software? Is encryption enabled? Thanks!
Click to expand...
Click to collapse
My internal storage is encrypted (by Default, cannot change w/o root) .
SD Card is not encrypted & you have the option to encrypt, if you'd like.
My SD Card in not encrypted & it too has the slow read/write speeds. I have Samsung's latest 256 GB Card & while I do not know the rated speeds off hand, I do know it's much more capable than what the hardware is permitting, right in line with what others have posted, about 18mb/sec.
Sent from my Sony H8296 using XDA Labs
I show a 18Mb/s read, 14.41Mb/s write with a Sandisk U1 card, my S8+ hit 66Mb/s read and 14.3Mb/s write with the same brand and type of card.
I tested also with u3 card. Same 18mb.. This one should be reported to sony useless to use fast card if it cannot even give the correct writing for the card..
One strange thing : I tested sd card right after a reboot and it was able to reach 35mb/s r/w speed but few minutes later it dropped to 18mb/s with the same test.
My sd card is not encrypted
Same 18mb/sec speed here with V30 card.
Id say its a firmware issue, im getting a whopping 2.70 MB/s coping from internal Storage to a u3 128GB card
XZ1 vs XZ2, using a Sandisk 200 GB UHS-1 card with default android file system as exFAT tends to slow down speeds quite a lot I've noticed. If I had to guess why the speeds are so low, then it's because the sim and sd-card reader share the same bandwidth (one logic board for both) therefor making it close/less than USB 2.0 speeds. Even my S8/9 are slow since they have the same setup.
Nessaja said:
XZ1 vs XZ2, using a Sandisk 200 GB UHS-1 card with default android file system as exFAT tends to slow down speeds quite a lot I've noticed. If I had to guess why the speeds are so low, then it's because the sim and sd-card reader share the same bandwidth (one logic board for both) therefor making it close/less than USB 2.0 speeds. Even my S8/9 are slow since they have the same setup.
Click to expand...
Click to collapse
I assume the left one (33MB R) is XZ2?
yyiimm said:
I assume the left one (33MB R) is XZ2?
Click to expand...
Click to collapse
Correct.
Well, quick update for everyone. Just flashed my phone with the Android P beta
SD speed on a 128GB Evo+ is now 31.57MB/s read and 28.05MB/s write according to A1 Bench. Not tested the Samsung Pro yet, but the speed restriction was software related (possible due to Oreo formatting as exFat, Android P said the SD was corrupt and formatted it as fat32)
JezJ said:
Well, quick update for everyone. Just flashed my phone with the Android P beta
SD speed on a 128GB Evo+ is now 31.57MB/s read and 28.05MB/s write according to A1 Bench. Not tested the Samsung Pro yet, but the speed restriction was software related (possible due to Oreo formatting as exFat, Android P said the SD was corrupt and formatted it as fat32)
Click to expand...
Click to collapse
would the actual Android P coming out this year you think? for those who dont like to run Beta.
JezJ said:
Well, quick update for everyone. Just flashed my phone with the Android P beta
SD speed on a 128GB Evo+ is now 31.57MB/s read and 28.05MB/s write according to A1 Bench. Not tested the Samsung Pro yet, but the speed restriction was software related (possible due to Oreo formatting as exFat, Android P said the SD was corrupt and formatted it as fat32)
Click to expand...
Click to collapse
I hope it will not delete my data against my wish after the upgrade with the real Sony Android P Upgrade.
Nothing to do with the file system on the SD, went back to 8.0 due to stability issues and tested the SD which it read fine with fat32, back to 18MB/s speeds again. Lets hope they move 'P' along at a decent pace. May go back to the preview at a later date, will keep an eye on the changelogs/issues
Just throwing in a theory. Seeing as previous XZ series has overheating issues, is it possible that Sony played safe with the initial release of the successor XZ2 by limiting the microsd speed so that it doesn't contribute much to the heat of the phone? In the android P beta they probably found that they could increase that limit as they experimented further.