I didn't know quite where to put this as the upcoming Samsung F480 doesn't really qualify as a smartphone yet it stands apart from basic phones. (See pic below)
http://www.gsmarena.com/samsung_f480-review-236p2.php
It is due to be released in the UK from the 19th of May 9 (7 days time) yet I can't yet find a precise figure on the maximum memory card it'll accept. Some sites cite 4GB memory cards as the maximum, whereas the Samsung manual quotes 8GB (Page 18):
http://downloadcenter.samsung.com/c...1450515_SGH-F480_UG_EU_Eng_Rev.1.3_080428.pdf
So does anyone know the maximum storage card this phone will take with certainty?
Related
Greetings all.
After much thought, I opted for a Magician (yet to arrive). The next step is purchase as large an SD card that my pocket can afford, and it is here that some advice would be appreciated. A 1GB card can be purchased here in England for around £55 upwards. All well and good. However, how do these budget cards measure up in terms of speed?
A second thought which struck me was that the same card could double up to be used in my digital camera. Doubtless many of you also own a digital camera. I had already bought a 256MB card for the camera, but was always perplexed by the amount of time it took the camera to be ready for another shot (in highest quality mode). It is only now that I belatedly realise that the delay must have been due to a slow write speed.
So there you have it: I would prefer a high speed write card (4 megapixel photos) which can also be used to play mp3s on the Magician. Are there any prime 1GB candidates that spring to mind? I have yet to find a good website offering comparisons of a wide range of SD cards...
look at the program pocket mechianics it let you benchmark your system and compare to other pda's and or with many SD cards
doubt it's uptodate though
and at least for the xda2 and many other pda's it's the interface which is bottleneck not the sd cards
sd card speed seem to matter the most when you are using usb2 sd card readers
I'll take a look at pocket mechanics to benchmark my existing card. What about for choosing a new and, as yet, unacquired card? Are there any recommendations?
I have heard good things about the SanDisk Ultra II range. Unfortunately, the 2GB version cannot be bought for less than ~£180 here in England. Are these cheaper in the States?
This post is inspired by Nook Color thread here http://forum.xda-developers.com/showthread.php?t=1005633
It's not limited to Nook so I just wanted to share info. It's about people trying to run OS from SD card and having problems, probably generic issue..
This issue is actually very old. I can recall some background. There is not much practical information in my post. Just some theoretical discussion.
I'm writing for somebody who is interested in knowing the root cause of this issue and it's just my observations.
The issue goes back as far as year 2004, when Dell Axim x50 series PDA were released (it's just an example). Remember PDA, or pocket PC? Toshiba, HP, Dell made pocket PCs with VGA screen many years before iPhone with half-VGA screen was introduced.
Anyway, in 2004 there was no issue yet. But then it comes 2005 when Microsoft released Windows Mobile 2005 OS. It introduced swapping memory to flash, the same concept we know from Windows desktop OS for a long time, when OS has a swap file on disk.
Dell (among probably others) released WM5 upgrade for its customers who ran WM2003 SE on Axim X50 series, original shipped OS. What happened was that customers complained about degraded performance (it was a paid upgrade, $20 as I remember).
At that point or a bit earlier in 2005 Axim X51 PDA series were released. They ran WM5 naturally just fine.
The difference was that x51 series had faster flash memory than x50s, particularly in random access performance. Good random read/write speed allowed to run the same OS smoothly.
Then it comes Windows Vista with ReadyBoost that has specific random access requirements:
The device must be capable of 2.5 MB/s read speeds for 4 KB random reads spread uniformly across the entire device, and 1.75 MB/s write speeds for 512 KB random writes spread uniformly across the device.
The requirements were there for a reason.
Then it comes first batches of SSDs based on JMicron JMF602 controller and people reported stuttering issues in Windows, it froze OS for a second or more. It's because JMF602 controller had poor random access speed.
Then it comes Windows Phone 7 OS that could spread OS partition from build-in memory to microSD. People tried to replace microSD and got issues, here:
http://www.engadget.com/2010/11/17/windows-phone-7s-microsd-mess-the-full-story-and-how-nokia-ca/
the big issue is random access performance -- a figure that isn't taken into account in a card's class rating. Ironically, Microsoft discovered in its testing that cards with higher class ratings actually performed worse on Windows Phone 7 because the tweaks card manufacturers make to achieve high sequential throughput can actually hurt random access times.
Then it comes people trying to run custom Android builds from microSD. It will never work well if SD card has poor random access performance.
All these issues have the same root cause.
Good internal flash memory and some Sandisk cards have like 1.0+ MB/s 4k random write speed. Regular consumer (micro)SD cards have like 0.05 MB/s speed. At least 20 times slower by tests, in reality, it's more significant difference. If there is a delay in 100ms as opposed to 0.1ms on normal memory it may render different path in your code.
Partially it's about rare race conditions that are difficult to test. There are like thousands of test cases that needed to be done on decent phones that run OS from internal memory.
It will not become better with Android ROMs as it didn't improve with commercial OS'es. I think, it's just too expensive for developers to take into account slow consumer cards in development process.
That's the way developers write and test their code. Don't blame them because they are too busy implementing real functionality as opposed to testing stuff on crappy consumer SD cards.
You can be genius programmer and be able to write a code that takes care of all possible memory response timings but at some point it just becomes too expensive to support it. Especially if no commercial OS is able to achieve smooth operation on such memory.
SD cards are meant to store your JPEGs and other media files. Running OS from it is a different story, for that more expensive controllers are built, that are found in SSDs.
For now, Sandisk cards seem to be OK, they may work fine (card that I bought was worse than best cards in original thread), but in future next card you buy may not be as good because random access performance was never guarantied.
So it's simple. No good random access speed - no smooth running OS from SD. Random speed is not reflected in SD class rating. Manufacturers have no interest in improving SD card random speed. It may degrade in future as they try to reduce cost.
Post card speed ratings while there are decent cards available.
micksh said:
Remember PDA, or pocket PC? Toshiba, HP, Dell made pocket PCs with VGA screen many years before iPhone with half-VGA screen was introduced.
Click to expand...
Click to collapse
And laptops back then had much higher resolution also. What's your point? Name one mass-market *smartphone* that had the resolution of an iPhone in a 3.5" display.
MartyLK said:
What's your point?
Click to expand...
Click to collapse
My point is flash memory performance that allows to run operating system comfortably. Besides, it can affect Apps2SD stability as well, I reported it in Nook thread.
What you quoted is just a small illustration to a bigger story. Sorry if it attracted too much attention.
An Absence of Knowledge is not Knowledge of an Absence
MartyLK said:
Name one mass-market *smartphone* that had the resolution of an iPhone in a 3.5" display.
Click to expand...
Click to collapse
Here's an example:
Toshiba Portégé G900.
Display Diagonal: 3 " (77 millimetres
Display Resolution 800 x 480
313 PPI
Click to expand...
Click to collapse
For comparison,
Iphone 1-3: 3.5" | 320x480 | 163 PPI
Iphone 4: 3.5" | 640x960 | 326 PPI
Just because you are not aware of what went Before Apple does not mean they did not exist. It apparently took Apple 3+ years to catch up with Toshiba for screen display clarity.
Checking in before this gets too in depth.
I am running an experiment on test validity, and direct comparison of cards in a sterile, replicable environment A Closer Look At MicroSD and Reader Speed
Linking these 3 threads will be a good thing as they grow, they're all tackling different aspects of the same issue.
I look forward to the development of this one.
ETA:
A member posted a link in my thread to something they wrote a while ago Here (XDA single post link) that bears relevance to this thread as well.
I've been reading on the internet that the Samsung Taylor was going to have an AMOLED screen but no one every gave specifics on RAM or the type of LCD. Anyone have some detailed specs? 256MB RAM or 512MB? I looked around the net and couldn't find a reliable answer.
Thanks guys.
No, it doesn't (regular LCD). And memory is 256 Mb because it's not retail device. Also no EMMC/internal flash, micro SD only (cards class 6 works perfect but still significant slower than regular EMMC on Focus for example).
I just bought one right before I saw your post. Thanks sensboston. We should collaborate on a wikipedia page for the device. I couldn't find anything short of rumors about the "new Samsung windows phone" and just a bunch of junk media from before WP7 came out. I take it you own one? Also didn't the venue pro have 256 MB RAM?
Sams Taylor is very old phone (one of the first WP7 models), built just for developers only. Also, MS/Samsung drop support for these handsets (so mine is get stock on 7003 - no chance to upgrade to Mango). I don't think it needs a wiki page.
I have no idea about Venue Pro memory size.
So there is no way to update our Taylors to 7004? Even if I was able to find a Taylor with update 7004 on it and dump the ROM, etc?
Dear Community,
I have been using a Samsung Galaxy S6 Edge for the past two years without any significant issues, apart from a defective screen which got replaced and is now pink-ish near the bottom, and a noisy camera when focusing. Generally I like the device quite a bit, despite it being not officially supported under Android 8 Oreo. The only relatively significant drawback for me is the lack of a microSD card slot - my version is the 32GB one and is almost always out of enough (3-5GB) free space (this, of course, is largely my fault ).
I got a new Huawei Mate 10 lite as a present past week. The 64GB version with 4GB of RAM.
I am now in doubt whether I should upgrade to the newer (but cheaper and bigger) phone or stick with the SGS6 Edge I already like and feel as enough for my current and future (1-3 year) needs. Unfortunately I am afraid that I would have to choose only one of those devices, so any opinions, questions and advice are welcome.
This is the GSMarena comparison of the phones, and the photo quality comparison.
Thanks in advance!
Kind regards,
Nikolay
I'm getting conflicting details about this.
samsung.com/global/galaxy/galaxy-a8/specs/ - says 256GB
samsung.com/global/galaxy/galaxy-a8/ - says 400GB
samsung.com/uk/support/mobile-devices/what-size-memory-card-does-my-smartphone-accept/ - says 512GB
Can you guys definitively tell me what is the largest microSD capacity you have tried (without errors and stuff)? My variant is the SM-A530F/DS (64GB internal). Maybe this varies by country?
bump
Never tried more than 64 but I'd say 256 gb would be the max for the regular A8. As far as the other numbers... your first link mentions a 32 and 64 gb internal capacity. My money is on the 64 gb version for the 512 sd card. But I cannot see evidence of that... anywhere. GSM arena says 256. for the A8 and A8+ I'd trust that info more than Samsung's. Samsung has for years told Canadians that their phones are not able to use an FM tuner. "Oh it has to be activated." Activated? Like, you mean if you DON'T take out one .xml file? That activation? My A5 and A8 both are capable. S8, same bloody thing. Go poke around here:
https://www.gsmarena.com/compare.php3?idPhone1=8790&idPhone2=8886
Haven't seen any variants other than software differences for the base model. In the first link you've provided, there is plenty written about differences. This should have answered your question easily. Things like...
*May differ by country and carrier.
*User memory is less than the total memory due to storage of the operating system and software used to operate the device features. Actual user memory will vary depending on the operator and may change after software upgrades are performed.
*May differ by markets and mobile operators.
*Actual components may vary by country or region.
Lastly, they've included this handy little comment that seems to say nothing you see or read has anything to do with... anything:
*All specifications and descriptions provided herein may be different from the actual specifications and descriptions for the product. Samsung reserves the right to make changes to this web page and the product described herein, at anytime, without obligation on Samsung to provide notification of such change. All functionality, features, specifications, GUI and other product information provided in this web page including, but not limited to, the benefits, design, pricing, components, performance, availability, and capabilities of the product are subject to change without notice or obligation. The contents within the screen are simulated images and are for demonstration purposes only.
SanDisk 200GB Ultra microSDXC UHS-I works fine
Samsung A8 2018, bought in Germany
After some digging, it seems to me that as long as SDXC is supported, the phone will read it. Theoretically, 2TB card is possible as well. https://www.sdcard.org/developers/overview/capacity/index.html