Xperia 5ii SD card storage speed limited to 30 mb/sec - Sony Xperia 5 II Questions & Answers

Hi folks, I'm a pretty old member and have returned after so many years just to get some info about the slow write speeds on the Xperia 5ii. I would like to know from y'all those who own 5ii or similar phone, what speeds are you getting with the SD card?
Btw, I have the Sandisk Extreme pro which can transfer @ 90 mb/sec, I hope this is just a software limitation & not hardware, as my older LG G7+ phone could reach 40 mb/sec with ease.

I doubt the V30 rated Sandisk Extreme card is the issue. Format the card in the phone if you already haven't.
Depending on what it's writing speeds may drop well below 90 mb/sec but on large contagious files it should be doing around [email protected] or higher depending on the interface*.
Try a test from internal memory to the card or vice versa. Maybe be a PC driver issue; check Event Viewer for error messages.
It's possible it's defective but very unlikely. Problems mounting/accessing a card can indicate a defect as well.
*not sure what your bandwidth limits are for that device.

blackhawk said:
I doubt the V30 rated Sandisk Extreme card is the issue. Format the card in the phone if you already haven't.
Depending on what it's writing speeds may drop well below 90 mb/sec but on large contagious files it should be doing around [email protected] or higher depending on the interface*.
Try a test from internal memory to the card or vice versa. Maybe be a PC driver issue; check Event Viewer for error messages.
It's possible it's defective but very unlikely. Problems mounting/accessing a card can indicate a defect as well.
*not sure what your bandwidth limits are for that device.
Click to expand...
Click to collapse
I did some research and found out that this issue persists on most Sony Xperia phones. Sony has released several firmware but hasn't fixed this one. I hope it's not a hardware limitation on these phones or the money I spent on a very expensive card would go down the drain due to not being able to take full advantage of it.

sachb_htc said:
I did some research and found out that this issue persists on most Sony Xperia phones. Sony has released several firmware but hasn't fixed this one. I hope it's not a hardware limitation on these phones or the money I spent on a very expensive card would go down the drain due to not being able to take full advantage of it.
Click to expand...
Click to collapse
Is internal memory to the SD card that slow?
What about read time vice versa?
Yeah I be irritated...

I think its HW issue. It seems to me, tah internal SD reader is connected via USB2 interface, which corresponds to limit above and test. External USB3 reader is much faster on this phone.

Related

Class and micro sdhc cards?

How much does class speed matter for a smart phone. I was under the impression that it's mainly important for video capture and photography (when using a digital camera).
Sent from my DROID2 GLOBAL using XDA App
There is no requirement or restriction on this. Anything microSD or microSD HC will work. Recommended is to get class 2 or better card in order to achieve better speeds when copying stuff from/to phone via USB in disk drive mode.
However under 'anything' do not assume you should go and get the cheapest ever card you find on eBay or something - if card isn't functioning good, phone may experience wired behaviour like resets/etc. Get something recognizable (SanDisk, Kingston, etc).
Some video camcorders require certain class+ card in order to keep up with HD recording bandwidth required. Since D2G can't even shoot 720p, even slowest card will be ok. Not that 720p would have required more...
leobg said:
There is no requirement or restriction on this....
Click to expand...
Click to collapse
Leo are you certain it will take ClassIII memory? It makes sense just not sure the hardware did that.
to the OQ - If they come out with a newer class there might be a compatibility issue with the phone but XDA folks usually finds away to support them soon after via a patch.
Stay away from old legacy (Not Classed) SD cards. Go for the fastest and largest you can afford.
Android rely's much more on the SDcard than WM ever did.
the phone should support up to class 6 (or whatever is the highest class) just fine, class just means the speed of the card, the d2g supports any class micro sd card up to 32gb in size, so as long as you dont exceed that, youre fine. the speed of the card could be a factor for programs that cache to your sd card, youd want a faster sd card if you plan to have programs do that.
I am pretty sure the class is backwards compatible. Kinda like USB 2.0 and 1.0. Its going to use the fastest the device is capable of using. I think it's more the size limits (In the case of android, 32gb) that matters. Granted, I could be mistaken.

Maximum SD Card speed?

does anyone know the max sd card transfer speed of the pad, and the dock?
i am looking at a 128GB SDXC card (yes, its a lot, but this is replacing a dead laptop for the foreseeable future) , UHS-1 60mb/s, or a 45mb/s one. will the UHS card actually have any benefits in the dock, or simply when transfering data to it from the PC.
many thanks!
I'm currently running a Class 10 (200x) 32 GB SDHC in the dock, branded Dane-Elec. Runs fine. I don't know if it takes 32+ GB cards, though... And to be honest, while heavily dependent on what you actually do with it, for most purposes a high-speed card should suffice...
ishamm said:
does anyone know the max sd card transfer speed of the pad, and the dock?
i am looking at a 128GB SDXC card (yes, its a lot, but this is replacing a dead laptop for the foreseeable future) , UHS-1 60mb/s, or a 45mb/s one. will the UHS card actually have any benefits in the dock, or simply when transfering data to it from the PC.
many thanks!
Click to expand...
Click to collapse
I'm currently using two Sandisk cards:
- microSD class 10 30MBps SDHC Ultra (16GB)
- full SD class 10 SDHC Extreme 45MBps in the docking station (32GB)
They get better speeds than the built-in disk, but it is still not great. It seems to be about 15-18Mbps write for SD, 6Mbps write for microSD and 30-32Mbps read for both (as compared to 12/18 of the internal memory).
The fastest way of moving data still seems to be external USB HDD...
Hope this helps, haven't tried any other yet. I have tried both FAT32 and NTFS though. They seem to give similar results (I had no problems using NTFS on my SD card so far, which is a good sign).
d14b0ll0s said:
I'm currently using two Sandisk cards:
- microSD class 10 30MBps SDHC Ultra (16GB)
- full SD class 10 SDHC Extreme 45MBps in the docking station (32GB)
They get better speeds than the built-in disk, but it is still not great. It seems to be about 15-18Mbps write for SD, 6Mbps write for microSD and 30-32Mbps read for both (as compared to 12/18 of the internal memory).
The fastest way of moving data still seems to be external USB HDD...
Hope this helps, haven't tried any other yet. I have tried both FAT32 and NTFS though. They seem to give similar results (I had no problems using NTFS on my SD card so far, which is a good sign).
Click to expand...
Click to collapse
I haven't used an external drive yet, but I agree with the observation that the transfer speed is not optimal, no matter what card I plug in (I have transplanted a few I normally use in my DSLR just for testing; they are all fast cards, as you can imagine). I transferred several documentaries and a lot of photographs yesterday evening and it took ages, mainly due to the fact that the transfer process hangs up the entire device (!) regularly. It seems to happen after about 70 to 80 MB are read into (temporary?) memory and apparently are only then buffered out to the main storage. Let's hope a custom ROM can straighten this issue out...
Thanks. Given these figures, would you install apps on the main memory, if a 30mbps rated micro sd for best performance?
Sent from my LT26i using xda premium
ishamm said:
Thanks. Given these figures, would you install apps on the main memory, if a 30mbps rated micro sd for best performance?
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
In my case internal memory is faster than microSD. You don't really have the option, unless you play with the filesystem and mount your MicroSD on /mnt/sdcard instead of /Removable/MicroSD. In the Infinity /mnt/sdcard is just a folder within the internal memory by default (many apps use it though, so they had to arrange it this way). I don't think there is any reason to change this, as internal memory seems faster and that's whole 64GB of it (OK, maybe 56 available, but still a lot..).
Perfect thanks, I thought though that there were current issues with I/O speeds until someone could fix it in a Rom. Or has this been addressed in the new firmware?
Sent from my LT26i using xda premium
ishamm said:
Perfect thanks, I thought though that there were current issues with I/O speeds until someone could fix it in a Rom. Or has this been addressed in the new firmware?
Click to expand...
Click to collapse
Hopefully I could tell you in a few days, but honestly I don't think it has (can't try it out yet, as the firmware released is Taiwanese version, and I'm on the World-Wide).
The Infinity is not that far behind other new tablets or rather it's not only TF700's problem, see http://forum.xda-developers.com/showpost.php?p=28416635&postcount=2842
However, after changing the scheduler to sio and doing some tweaks (see my post on it: http://forum.xda-developers.com/showthread.php?t=1758160), it's running pretty smoothly (unless you want to do a lot of CPU-heavy jobs while having huge reads or writes in the background, in this case it can get frustrating, but.. there is no real alternative these days).
d14b0ll0s said:
Hopefully I could tell you in a few days, but honestly I don't think it has (can't try it out yet, as the firmware released is Taiwanese version, and I'm on the World-Wide).
The Infinity is not that far behind other new tablets or rather it's not only TF700's problem, see http://forum.xda-developers.com/showpost.php?p=28416635&postcount=2842
However, after changing the scheduler to sio and doing some tweaks (see my post on it: http://forum.xda-developers.com/showthread.php?t=1758160), it's running pretty smoothly (unless you want to do a lot of CPU-heavy jobs while having huge reads or writes in the background, in this case it can get frustrating, but.. there is no real alternative these days).
Click to expand...
Click to collapse
This. As i've ranted earlier, the new firmware provides fixes for camera issues, not for the I/O the TF700 so obviously suffers from. Having said that, it is not like the tablet in itself is useless as it is -- far from it -- but remains a mystery to me why they didn't spot this in advance (like with the Prime's issues with GPS and wifi), It seems like ASUS develops a device by letting several teams work onindividual components, and, when they get their specific part up and running, just put it together and relese it. I have a distinct feeling that neither device was actually and properly tested.
But, still, I'm pretty happy with the device overall.
I think you need to read this thread:
http://forum.xda-developers.com/showthread.php?t=1767755
From what I see my UHS-1 card that doesn't work is initialized as DDR which means the max speed for the TF700T µSD is 50 MB/s (as that is the only DDR speed).
The full size SD socket uses a USB host so the big question is is it USB 2.0 or 3.0!
All specifications says USB 2.0 for the dock, so I would assume that's correct, even for the TF700 dock.
Asus has finally responded that there is limited UHS-1 support in the µSD slot.
For now you are better off not trying UHS-1 in there. The may come up with a patch...
external memory limits
ishamm said:
does anyone know the max sd card transfer speed of the pad, and the dock?
i am looking at a 128GB SDXC card (yes, its a lot, but this is replacing a dead laptop for the foreseeable future) , UHS-1 60mb/s, or a 45mb/s one. will the UHS card actually have any benefits in the dock, or simply when transfering data to it from the PC.
many thanks!
Click to expand...
Click to collapse
Careful there with a 128gig card, I read somewhere that there is a 32 gig upperlimit on recognizing cards and sticks...
tho I do wonder if you formatted it into enough partitions it might read them all?
kokoPedli said:
Careful there with a 128gig card, I read somewhere that there is a 32 gig upperlimit on recognizing cards and sticks...
tho I do wonder if you formatted it into enough partitions it might read them all?
Click to expand...
Click to collapse
If the dock uses a sdhc compatible controller and simply exposes the card as a mass storage device for the system, then there is really no such limit. The SDXC cards which supports >32GB does so due to the SD's FAT specification not for actual addressing and such.
SDXC cards are accessible as SDHC but standard specifies ExFat as default filesystem. This may not work on units not compatible with ExFat, but a reformat will fix that. In the TF700T's case we have already seen users use 64 GB cards breaking that 32GB barrier.
We have also seen the TF700T mount ExFat, although it seems to fallback to NTFS.
The thing he should be carefull of is UHS in the µSD socket as it's still wonky.
In the dock I suspect a UHS card will simply be treated as a normal SDHC card, but UHS cards usually have better class speeds so may be a benefit even with the dock doing USB2.0 hosting.
Edit:
To back up my claims see here...
http://kb.sandisk.com/app/answers/detail/a_id/2520/~/sd/sdhc/sdxc-specifications-and-compatibility

Backing up to Samsung account problem with SD card

I can get my phone to backup to the Samsung account and cloud but if my sdcard is In it takes an ungodly amount of time to calculate the amount of music I have on the sdcard so I give up.
I've switched it dso it doesn't backup my music (which is on the 128gb memory card) but it still wants to calculate it every time.
I want to be able to backup without having to take the memory card out
Any ideas?
mikeyaj said:
I can get my phone to backup to the Samsung account and cloud but if my sdcard is In it takes an ungodly amount of time to calculate the amount of music I have on the sdcard so I give up.
I've switched it dso it doesn't backup my music (which is on the 128gb memory card) but it still wants to calculate it every time.
I want to be able to backup without having to take the memory card out
Any ideas?
Click to expand...
Click to collapse
Do you have wifi turned on?
yes
it works perfectly........... but only when the sd card is out of the phone. before backing up it seems to want to calculate how much music is on the sd card
mikeyaj said:
yes
it works perfectly........... but only when the sd card is out of the phone. before backing up it seems to want to calculate how much music is on the sd card
Click to expand...
Click to collapse
I have a 200Gb card with loads of images and music and don't have any issues. Did you disable any services with Package Disabler pro? That might be an issue as when you restore a backup from the cloud you have to re-enable all services.
Could be a fake SD card. Did you buy it from a reputable seller? Fake cards can be incredibly slow or take ages to scan contents because they often use shady tactics to make the card appear to be 128Gb for example when accessed on a phone or PC while in reality being much smaller in capacity (2-16gb etc). These fake cards can look incredibly convincing too so dont be fooled by an elaborate copy.
Here's an app from the Play Store that can check if you have a counterfeit sdcard, SD Insight. The app isn't compatible with the S8 but if you have an older phone you can test your sdcard.
https://play.google.com/store/apps/details?id=com.humanlogic.sdi
Card has been used in 3 Samsung phones. Never had this issue before. Is not a fake card and not disabled and packages
mikeyaj said:
Card has been used in 3 Samsung phones. Never had this issue before. Is not a fake card and not disabled and packages
Click to expand...
Click to collapse
If its been with you for at least 3 phone cycles, was the speed ever really that good to begin with? It sounds like it may be an older card perhaps. Keep in mind, technology moves quick.
If you happen to be using a card that was cheap/midrange only a couple years ago, it would stand to reason that it may be underwhelming and feeling pretty slow by today's standards.
Download an app along the lines of "A1 SD Bench" and run a test for me. Post your Read/Write speed results in here for us when you're finished.
If the result of this test is poor you may want to look at the newer UHS-I supported cards if speed is becoming an issue.
I bought the card pretty much when 128gb micro SD cards were released and use it every day in the phone with no problems to play music and store pics
To be fair I presume that means it's old tech and I've been meaning to replace it. Just bought a brand new Samsung 256gb one.
Don't understand what any of the jargon means regarding sdcards and can't be bothered to test the issue.
To be fair it never occurred to me that the card is a bit long In the tooth as I've used it with the s7 edge with no probs. So just surprised the s8 struggles
mikeyaj said:
I bought the card pretty much when 128gb micro SD cards were released and use it every day in the phone with no problems to play music and store pics
To be fair I presume that means it's old tech and I've been meaning to replace it. Just bought a brand new Samsung 256gb one.
Don't understand what any of the jargon means regarding sdcards and can't be bothered to test the issue.
To be fair it never occurred to me that the card is a bit long In the tooth as I've used it with the s7 edge with no probs. So just surprised the s8 struggles
Click to expand...
Click to collapse
Why even bother posting if you "you can't be bothered to test the issue?"
Because I decided I wanted to.
I tend to do what I want and considering the card is in 100% working order what's the point.
If times have changed and I've gotten to answer that it's old tech I can replace it with newer tech.
Thanks for your help but I can assure you I'll post what I want, when I want, how I want. I don't have to do anything I don't want to when I've already been told the card is old tech
mikeyaj said:
I bought the card pretty much when 128gb micro SD cards were released and use it every day in the phone with no problems to play music and store pics
To be fair I presume that means it's old tech and I've been meaning to replace it. Just bought a brand new Samsung 256gb one.
Don't understand what any of the jargon means regarding sdcards and can't be bothered to test the issue.
To be fair it never occurred to me that the card is a bit long In the tooth as I've used it with the s7 edge with no probs. So just surprised the s8 struggles
Click to expand...
Click to collapse
Ah yes, I figured that was the case. It will be interesting to know if that new card solves your problem. If you still want to run a quick benchmark on your old card its not as involved as it sounds. If you use the app I recommended before you just choose your SD card in the UI and it should only take a few minutes to run a speed test.
Read speed: 33.97 mb/s
Write speed: 10:78 mb/s
Presume this is rubbish. I bought the SanDisk card the week 128gb cards were released in the UK so it's quite old now but never had any problem with it.
All photos and all my music is on the card. Never had any issues with it. Have now purchased the following:
Samsung MB-MC256DAEU 256 GB EVO Plus MicroSDXC UHS-I Grade 3 Class 10
My 2 year old 200Gb card:
Read 1692.00MB/s
Write 14.81MB/s
mikeyaj said:
Read speed: 33.97 mb/s
Write speed: 10:78 mb/s
Presume this is rubbish. I bought the SanDisk card the week 128gb cards were released in the UK so it's quite old now but never had any problem with it.
All photos and all my music is on the card. Never had any issues with it. Have now purchased the following:
Samsung MB-MC256DAEU 256 GB EVO Plus MicroSDXC UHS-I Grade 3 Class 10
Click to expand...
Click to collapse
Oh wow, that write speed is pretty terrible. The read speed is "passable" I guess but still below average and well below the UHS-I cards.
I had one of the first 64GB Sandisk cards (around the time of the Galaxy S4 I'd like to say?) so I know what you mean but that thing was relegated to my drawer long ago after I realized just how agonizingly slooow it was.
xeathpk said:
Oh wow, that write speed is pretty terrible. The read speed is "passable" I guess but still below average and well below the UHS-I cards.
I had one of the first 64GB Sandisk cards (around the time of the Galaxy S4 I'd like to say?) so I know what you mean but that thing was relegated to my drawer long ago after I realized just how agonizingly slooow it was.
Click to expand...
Click to collapse
it isn't slow
it's perfect for listening to music from and saving all pics to. perfect to the point of there would be no need to change the card. exceptional performance.
why the s8 has issues trying to calculate the amount of music on it to back-up even when i've toggled it NOT to backup music is a bit of a stupid upgrade on the s8 when the s7 was fine.
maybe samsung haven't figured out that most sd card users just throw pics, film and music on it so it doesn't need to be super fast as they've toggled off the backup option. seems to be a really strange software decision to try and calculated stuff to back up you don't want backing up lol
Objectively it is on the slow side but I understand what you mean. If all you plan on doing is copying a load of files to it once and only need it to access a few songs or pics here and there than you're right it should be fine. Let us know if you're able to solve your issue with a new card or whether the problem persists. :good:
xeathpk said:
Objectively it is on the slow side but I understand what you mean. If all you plan on doing is copying a load of files to it once and only need it to access a few songs or pics here and there than you're right it should be fine. Let us know if you're able to solve your issue with a new card or whether the problem persists. :good:
Click to expand...
Click to collapse
I've used it all an excuse to buy the 256gb card though.
Is the one I've bought any good?
Samsung MB-MC256DAEU 256 GB EVO Plus MicroSDXC UHS-I Grade 3 Class 10
Its quick as hell. "Up to 95MB/s Read and 90MB/s Write speed with UHS-I, Class 10 and U3 compatibility."
It should serve you well for quite a while I'd imagine. Even I'm tempted to get one right now.
Waterproof (IEC 60529, IPX7)
Temperature-proof
X-ray-proof
Magnetic-proof
10 year warranty
Not bad, not bad.
I've never had a Samsung card . Always had the sandisk ones

Micro SD read/write speed

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.

Question S-L-O-O-O-W external microSD memory

I just bought an A53 , stepping down from "flagships" because the newest ones all lack expandable storage.
This feature is a MUST for me!
I've found the A53's interfacing to the card slot to be so EXTREMELY slow, to make it unusable!!!
Anyone else seeing this as well?
(I'm using a 1TB SanDisk - about 75% full - that worked quite well in my previous phone)
Is it the Exynos chipset (vs. Snapdragon previously) that is causing the difference?
Is anyone here using a large capacity microSD without any noticable speed issues?
Anything I might do to improve the situation???
(Aside from sending the phone back?)
And if I have to resort to that - recommendations on a good pgone w/ expandable storage - up to 1TB)?
(Many only specced to 256 GB)
What is slow? From internal memory to SD card or via Cport to SD card?
Is it a V30 rated card ie Sandisk Extreme?
On my N10+ with a V30 rated Sandisk:
Internal write 3.4-4gb @ minute
External write 1-2.2 gb @ minute, I believe it was.
An external transfer takes about 3.5 hrs for 400gb of data. Rates very somewhat depending on file structure and type.
The .5tb Sandisk Extreme is slightly faster. Both stream high res vids with no issues. Zero problems with both.
Once in the phone format card with phone before using. Do not remove the card once installed; instead do data transfers via the Cport. Do Not use in other devices unless formatting in new device first as it can cause card corruption. I was able to transfer my older .5tb card to my new N10+ without a format with no issues. However in general I don't recommend this practice. A corrupted card is a very rude surprise.
A used N10+ in good condition trumps a newer midrange Samsung especially if 5G and variable refresh rate display aren't important to you. It's a beast that runs like a she bat out of hell.
Many thanks, Blackhawk for your prompt and helpful reply!
Simply reading from the SD card, and getting a listing of files in s folder is very slow.
Here's an example:
Moving files from one folder to another on the SD card...
9634 files, 12.7 GB ; has taken over 29 HOURS
That's 2 hours per gigabyte.
Other transfers from internal memory to SD are also very slow, and often fail
depending on the file manager I try to do it with.
The card is a SanDisk 1TB Ultra MicroSDXC UHS - 120MB/s, C10
and as I mentioned, it has worked fine on my previous phone.
I've tried several different file managers with varying results.
They vary from completely inoperable to barely functional.
(The 2 hours per gigabyte is the BEST I could come up with )
The card was formatted in the old phone, and some transfers in and out were with a Windows PC in between.
I'll try offloading the contents to another drive and formatting in the A53 before copying back again.
5G is important - and a Note 10+ 5G would be an available option - but only available as refurbished now.
I may go there if the reformat experiment doesn't pan out.
Thanks again!
This is the one that you wanted for best speed. V30 rated. Even so your transfer rates aren't even near the ballpark.
Try reforming the card in the phone. Maybe a bad card; always buy from a reputable source, if it seems too inexpensive it's likely a fake. They are out there! B&H Photo, Western Digital and Amazon are good sources.
Unlikely it's the phone but check the contacts and clean the SD card contacts with anhydrous isopropyl alcohol. Never touch the contacts.
I don't recommend the N10+ 5G variant as it's a first generation 5G and will likely chew up battery life. 4G works well enough to stream vids and many sites cap their downloads making 5G irrelevant. New N10+'s may still be available if you look hard enough. I picked up one 9 months ago, not cheap but in a factory sealed box, perfect condition and running on Android 10.
Although I prefer Pie, 10 is ok, 11 not so much because scoped storage is fully active, 12 I won't touch. Pie is relatively secure unless you do stupid things. This device in my hand load is over 2 yo still running fast and stable.
Snapdragon is the preferred variant (better chipset and heat sink) unless you want to root.
The N10+ has maybe the best display available in terms of white point, color calibration/accuracy and gamma. The variable refresh rate displays are extremely hard to calibrate across the multiple display rates/brightness levels. As such the N10+ likely beats out even the newest Samsung flagships in these specs. Color accuracy is important to me; without accurate color calibration the gamma calibration sucks.
I deliberately chose a new N10+ over the N20U because of the above plus better form factor, the spen is on the right side, better SOT and reliability. The only repair my N10+ has had is a replacement battery. It looks, feels and runs like new. It's a gorgeous beast even today and a blast to use.

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