yashsingh1/xdaforums huggingface dataset:
[Focus General] kawgirlval69:
The SANDISK 16gb class 2 sd card is proven UNSTABLE... there are too many posts on this forum that proves this. so forum members decide for yourself... do some reading and make an educated decision before you waste money, or believe the one person that it "works for" but cannot keep their story straight and likes to spout filth because he is ticked that he is getting proven wrong and waste $25.

YOUR CHOICE FORUM... i dont thing the person that started this thread would have it listed unstable if there werent good solid proof that it was...

im done with this jackwagon... forum members I SAY GOOD DAY!

Mod Edit: Please play nice!
[Focus General] bigfire:
So far, it looks like you're correct, but there might be a cause. I didn't have another loss of data until I did another sync and crammed it full of data, and then left on a trip the next day (where i'm currently at). The morning after I mostly filled up the data, I had two data losses. The next day, four. I'm wondering if it's not so much that the card is progressively going (though that very well might be the case), but that having so much data is either a) passing a threshold that simply makes it unstable or b) has a bad area on the card that data is typically being written to, hence making it crash. I notice after a reboot that I've lost data that was written shortly before the reboot (like text messages).

Anyway, not so happy now. Still looking for my prince of a 32 gig card.
[Focus General] kawgirlval69:
thanks bigfire... Yes I'm thinking it gets to a point and it just becomes unstable... Mine worked for a month without a hitch. Then poof, I hit that threshold it doesn't like. I believe its how the phone reads certain cards .. Not all cards are created equal..lol. Not bashing SanDisk but something is up.. The 8gb class 2 is solid.. Haven't had a class 4 16gb but I've read it has issues. The good news is that Samsung is releasing a 32gb this month so one is on the way. You're like me, you put everything you own on it because you never know what mood you are in .

Again thank you for the appreciation. Also for $25 shipped on eBay Samsung 16gb.. Tested and working flawless.
[Focus General] Sebo1985:
That's not right completely. Yes I tested it to death, no the card didn't get more unstable with time. In fact the stability was related to the amount of syncing and installing programs, right from the beginning. Just my two cents.
[Focus General] jeff.holsinger:
Ok, hope I can be heard through this ongoing flame-war. So I have question for those of you that have upgraded with a card. What gets lost during the reset that doesn't come back after sync? I was going to wait until after the NoDo release, but it appears that's not happening until March 8. Any information would be appreciated.

Thanks.
[Focus General] mKTank:
Everything is lost. The card becomes integrated into the OS. Only thing not lost is the information stored on the cloud. You can also back up your music and videos by copying them to your computer. Turn the phone off, remove battery then the card. Insert new card, battery, and perform the 3 button hold (volume down, power button, and camera button, all held down). The phone should then ask if you want to format the card. After that, you get to initial setup and voila.

It's very simple.

Sent from my Samsung Focus using Board Express

I forgot to add: I'd recommend you wait till the update, that way you lose nothing.

Sent from my Samsung Focus using Board Express
[Focus General] vedichymn:
I don't think we can really make blanket statement one way or the other. I've had both a 8GB Sandisk Class 2 and a 16 GB Sandisk Class 2 cause my phone to reset and have data loss, but a 16 GB Samsung Class 2 works just fine with no slowdown.

You got lucky with your Sandisk Class 2, but other people have had issues, which is why it's listed as "unstable/unsure"
[Focus General] mKTank:
I respect that. But it is odd how it worked fine here, multiple times over a month, and works badly for you.

Sent from my Samsung Focus using Board Express
[Focus General] vedichymn:
Unfortunately I think that might just be more of an issue with the consumer electronics market in general. From my understanding the class rating is just a minimum rating, so it's possible your Class 2 card might perform much better than mine, but both of ours are still sold as Class 2 cards as they meet that minimum speed requirement.

Presumably someone like HTC can get a custom batch with their own performance requirements explicitly stated, while we're somewhat at the mercy of whatever we get.
[Focus General] mKTank:
This also makes sense. SanDisk may have made two different generations of 16GB Class 2 cards as well
[Focus General] PaullikesWINMO:
I still think my phone (Focus) will be far superior to any iPhone once these bugs are ironed out. And if any one wants to argue because they own an iPhone try swapping your battery in 15 seconds flat first (like I can with my Focus), then make your comments. :-) And if you still want food for thought, the first iPhone did not have copy/paste either and I don't have to hold my phone a special way (or buy a rubber case for it) so it doesn't interfere with reception. Can't wait for the updates to come. This phone will be blazing by any iPhone soon enough. Might even put Android to shame.
[Focus General] jeff.holsinger:
Thanks

I was leaning that way anyway so I probably will. Just hate having a card sitting at home not being used. Really is a psychological shortcoming of mine.....

:D
[Focus General] Sebo1985:
I just want to add, that Zune does install quite a lot of apps automatically that you installed prior to the reset.

I experienced that today, but also I have to say: Not all apps were reinstalled. Perhaps only those you installed via Zune and not via the phone and marketplace.
[Focus General] vedichymn:
That's correct, apps have to be installed through the Zune software to be automatically readded to your phone after a hard reset. It also seems like if you update through the marketplace app on the phone they're no longer reinstalled through the Zune software as well, but I could be wrong.
[Focus General] kawgirlval69:
omg!!! you are seeing the light.... now you are getting what i was trying to tell you... i wasnt doubting your card working, i was irked over you telling others that the card has no issues... yours might not but too many others have, and i doubt its a problem with the format... sorry but that wasnt earth shattering info you gave.. to correct myself it is on page 1 of the manual plus its been posted a hundred times on the forum...

see now was that so hard...

the point is we want the info on here to be good info so 1 out of 50 does not a no issues card make.
[Focus General] mKTank:
I don't think the problem here is that I was lucky or whatever, I just think that SanDisk probably made two different generations of the 16GBC2. It works excellently here, and if it does, then it should work excellently everywhere too. But what I'm thinking is that we all have different cards. Does SanDisk really only make ONE class 2 16GB MicroSD and only in one generation? Probably not.

Here's what mine looks like. Is yours identical?
[Focus General] kawgirlval69:
heres my 16 and 8... 8 no issues.. 16 soon as i get the phone past 15gb the reboots start.. 18gb and they happen like clockwork every 30 seconds... the same has happened on all 6 16gb i have tried... all 6 look like this one and it looks like yours...

now i do think there is some luck to it. reason being there have been so many more with problems than havent. i work closely with a few of my local at&t stores and they all had to stop selling the 16gb sandisk because pretty much every one came back. they have even sent customers with the issues to my shop to see if i could figure it out because at that time mine worked, but i only had 13gb used. i know technically it doesnt make the most sense that a few gb make a difference but every one ive had has done it there... i have seen one and read about others that did it quicker.

i do know that the 16gb class 2 sandisk that come with the hd2's were made for htc. now if they were spec different i have not found anything. really all we are dealing with is a very small microchip thats inside the sd cards.. i do believe the name brands/more expensive are better than the generic/cheapos because the fail rate in general of the generic cards is incredible compared to a sandisk or a kingston... i guarantee the quality of chip is better. so where does this all leave us? confused..lol i know we that are contributing and testing are truly trying to find the solution... we know the sd fix didnt help anything but the screen responsiveness. im still betting the issue is still somewhere in the phone. there is something like a voltage setting that makes these cards so sensitive. does this make sense, yes and no.... no because it doesnt make sense why one sandisk works and another wont eg:8 vs 16... yes because maybe the coding is different..maybe each mfgr uses different settings. maybe the settings are different on a gb basis... i dont know because on that level im not familiar and nobody seems to have posted anything on it either so its just speculation. the one guaranteed thing is that there are issues with sd cards period or microsoft and samsung wouldnt have addressed this issue.

honestly im hoping the more we are able to dig through the registry we will find something that works or that m/s or samsung find the issue and patch it.... something has to give, but until then we will still test and try...
[Focus General] mKTank:
That's pretty damn weird. Welp, you convinced me. The card didn't screw up my phone when I filled it up but if all six of them really screwed up with you, then I suppose the card has earned its place in the OP. I'm willing to bet (or hope anyway) that Microsoft is going to fix this in the upcoming update(s).

Now how about that 16GB Class 6 Lexar? Who reported it as not working properly and why?
[Focus General] kawgirlval69:
lol took 24 hrs and a pretty nice debate.... on to finding a solution...:)

the lexar i have not come across yet if i do ill try it...
[Focus General] FishFaceMcGee:
That was back in November.
[Focus General] mKTank:
Ah, alright. Can't argue there; I only have the 8GB but it works nicely.
[Focus General] ITDRAGON:
Just an update.

Ok I've been using my Sandisk 32Gb class 4 ever since my first posted about it in here, and I still to this date have not had a problem. I've even cleared all the memory off and reloaded everything several times. So I don't know what the issue is with everyone else that has posted it doesn't work, I guess your all just unlucky :p oh and I've knocked on wood just in case ;)
[Focus General] foxbat121:
It all sounds like a hardware defects to me, like the GPS on Samsung Captivate: some works just fine but most of them doesn't work well at all.

Or it could be unstable SD card driver issue as well.

Neither Microsoft, nor Samsung is talking. So we really don't know who's to blame. If it is a driver issue, I'm pretty sure MS will fix it with the update. If it is a Samsung hardware issue, we all are SOL.
[Focus General] shoyu burner:
SDcard and phone status

Thanks to all for this incredibly helpful thread.

I bought a Samsung Focus at the beginning of the month.

I have NOT done any registry tweaks.

3 days ago I installed a SanDisk 16GB C4 which gives me 22.02GB total space. After initial loading I had 10.98GB free/available (i'm not sure how much GB is actually loaded, it would depend on if you count 22GB or 24GB as your total capacity).

I ran that for one full day with a few soft resets and Zune syncs and no problems.

Yesterday I loaded some more data and am up to 5.66GB free space. This should mean that I have anywhere from 16G.3B to 18.3GB loaded. Did some soft reboots, ran some apps, marketplace browsing, web, email, etc. No problems yet, but only my first real day. Will report back as time progresses.

Also, a little off topic but I have NOT had any issues with less or un-responsive touch screen when laying phone down on a bed, wooden table, or wherever and using a single finger tip to try and operate phone. I'm not sure if the recent versions of the OS or firmware have already addressed this issue, but mine works fine with no registry hacks.

My OS version is 7.0.7004.0

Firmware revision 2103.10.11.2

hardware revision 3.1.0.7

Bootloaded version 4.11.0.9

Chip SOC version 0.36.2.0
[Focus General] daryl_moses:
Hi,

This is my first post ever, so excuse me if the form is wrong. From reading the other posts, and from studying my phone, I'm convinced that my Sandisk 16GB class 2 card was a bad idea given the number of resets I get per day (8-10, starting when the battery gets to about 50%).

I'm debating taking the phone back for exchange just to be safe. In the mean time, I'd like to know, based on the experience of all of you who have gone before me, should I gamble on the Sandisk 16GB class 4, go down to the Sandisk 8GB class 2, or settle for the basic phone with no memory card?

I like the operating system and would like to keep it but I need it to be reliable. I use my phone too much for work (and play) to be constantly worrying that one of these reboots will be "the one".

What is the consensus on the more stable card option?

Mod Edit: Sorry pressed edit post instead of reply! :)
[Focus General] lyriquidperfection:
Hi mate, welcome to the forum, im not sure myself about the issues regarding MicroSD Cards in the Samsung Focus but I reccommend talking to kawgirl69 as she is a fully qualified mobile device technician and has been participating in this thread quite a bit already, and she knows her stuff! :)
[Focus General] PaullikesWINMO:
for those that have working cards I think they no longer need to worry. For those of us with non-working cards, or are about to buy a card, we are waiting for the official WP7 certified cards. There was rumour that they would be out this past week but I haven't seen the news. Also we are waiting on the update from Microsoft. That now seems to be coming in March. And with Nokia and Microsoft joining forces can only hope these issues will never occur again.
[Focus General] SuperSport:
Do you think you are running the NoDo update? Do you have copy/paste? Or it's just minor updates during manufacturing.

EDIT: Oops, should have paid more attention. Same OS version... :o
[Focus General] SuperSport:
The only known "approved", NOT certified, card (I got the words directly from Samsung) is the Samsung 16GB card I listed earlier. There are a few others that seem to be stable, but as far as I can tell, everyone experiences slow downs of some sort or the other after a period of time and when the phone is close to not having much memory left.

I have not had a single Reboot or any Data Loss without me initiating it, but I do get slow downs and touch response often gets bad after using it for a period of over a week, even after the Registry Hacks!

I do feel confident that my data is safe though.

I'll repost pictures of the "approved" card in a moment:

EDIT: Reading back through my previous post, I stand corrected by Myself! I was told it is indeed CERTIFIED by Samsung (it's just not printed on the card). I know I wrote in the previous post exactly what I was told on the phone with Samsung because I took notes as I spoke to them. Also, instead of posting photos again, just click the link below to see the info and pictures.

Please see THIS POST for more info.
[Focus General] mpinlacm:
I have had the Sandisk 8gb class 2 in my phone for about a month now. My total storage went up to 14.59 gb (which is actually a little bit more than the total onboard storage of the HD7). I've brought down the available storage memory to a little over 1gb and have had no problems with the phone resetting or anything like that. I've also taken the battery out for 12 hours when I was applying a Zagg screen protector (the wet one). The only things I've noticed is that there is sometimes a slight lag when scrolling and apps loading slightly longer (comparing my phone to my wife's focus without a memory card). Hope this helps.
[Focus General] mKTank:
I'd recommend you go for the 8GB Class 6 Lexar. Quite a nice speed bump from Class 2 or even Class 4, and it's only 50 bucks.

But if that's out of the question, then go for the 8GB Class 2.
[Focus General] kawgirlval69:
only 50 bucks for an 8gb c-6 lexar or 25 bucks for a certified samsung 16gb.... you make the call...
[Focus General] mKTank:
50 bucks for 6MB/s or 25 bucks for 2MB/s, keeping in mind that parts of the OS itself are stored on the card, so speed really matters.

You make the call.
[Focus General] FishFaceMcGee:
The problem with you acting as though Class 6 is always better than Class 2 is the fact that Class speed ratings are only for sequential reads, while WP7 (and most OS'es for that matter) tend to use random reads more often. Ideally a Class 6 card would still have faster reads, but that's not always the case as often the techniques used to get the sequential speeds up may end up lowering random read/write.

You may want to read this article. http://www.engadget.com/2010/11/17/windows-phone-7s-microsd-mess-the-full-story-and-how-nokia-ca/
[Focus General] mKTank:
I know about the sequential/random reads. I even posted about it a page ago. But I'm surprised at that article. Microsoft found that higher classes perform worse? Interesting as hell. I noticed quite a huge speed bump going from my Class 2 to Class 6, though, which is why I'm recommending this. I even recommended the same card I have so it's guaranteed to give him faster speeds anyway. I know that not all Class 6s are as fast and that some may be better than others when it comes to random access, but at least this Lexar one I have seems to be faster with WP7 than the SanDisk Class 2s. This is why I'm recommending this card.

Still, I'm pretty surprised at that article. Thanks for posting it.

EDIT: Now that I think of it, though, maybe the card was being slow because it was the 16GB SanDisk? I mean, it's a Class 2 and all, but people here have been saying that it doesn't work properly. Others had their data wiped, I had it being slow?

Here's a little case and question: with the Class 2 16GB, the phone would often act a bit weird. The alarm for example would stutter and cut whilst the screen was off. Music sometimes glitched up and had noise artifacts randomly whilst playing, only to be fixed by restarting the phone. And icons on the apps list couldn't catch up quick enough when I scrolled down quickly. Does anybody else with a Class 2 have any of these glitches? Because going from my 16GB C2 to 8GB C6, the speeds have gone way up and it has been a ton more stable in every way.
[Focus General] bigfire:
So, bizarre observational data: It got progressively worse for two days, and then was fine. Haven't had a data loss since I reported in, and my power went all the way dead during excessive use.

Hurm.
[Focus General] kawgirlval69:
25 Bucks all day long... I have 3gb open right now and not a glitch.. Just as fast as it was day 1... Games load quicker than without the card... Plus the kicker is that its certified... Yes. All day long...the Samsung is worth it...
[Focus General] mKTank:
Can you confirm that there's no issue with alarm sounds when phone is off, no issues with icons not loading as quick as you scrolls, and no issues with music glitching up occasionally whilst playing?
[Focus General] SuperSport:
Definitely a possibility

As far as I know, I'm the first one to run the Samsung 16GB Card being spoken about, and I will admit, I occasionally get the bottom Icons not updating behavior, along with unresponsive screen. I don't get the sound issues though. I'm currently running with 1.9GB free, so maybe that has something to do with it. I've tested playing music while doing other things and while locked (reading email, updating apps, playing Project Sunburst, etc), and so far, no skips at all.

While the article from Microsoft does make a lot of sense, I guess it is entirely possible that you've found a card that exceeds expectations. It's obvious that each card is a crap shoot as to how it performs with this phone, and possibly, you found a diamond. ;) Maybe your card offers fast sequential/random reads as well as random read/write speeds. That would be good news to anyone wanting to speed things up a bit. Maybe more testing would be a good idea...

PS: Just an observation. I installed a full body protector almost immediately after getting the Focus. I guess It's quite possible that is the cause of the unresponsive screen. Anyone WITHOUT a screen protector also have this behavior?
[Focus General] jeffgeno:
I've had a class 4 SanDisk 8GB card installed since just after the US release and haven't had a single problem. The class 4 SanDisk 32GB card I tried to use before that was great for 3 days then contantly rebooted, often in a wiped state. If you want an absolutely guaranteed card to work, the 8GB SanDisk class 4 is cheap and reliable.

With the first update from Microsoft right around the corner bringing the ability to backup and restore the phone, I'd wait a bit before getting experimental with cards. It'll be so much easier to rebuild in one shot when you swap them out.
[Focus General] mKTank:
The alarm sound issue happens whilst the phone is locked for me with the C2. Also, that music glitch happens very rarely. Only 3 times in the month of having the card, so...

But yeah, it seems I got pretty lucky with this Lexar. It's blisteringly fast.

EDIT: Oh yeah, and I don't get the unresponsive screen behavior on surfaces. But when my fingers are really dry, the touchscreen becomes a pain in the ass; unintentional taps whilst scrolling ahoy.

Sent from my Samsung Focus using Board Express
[Focus General] kawgirlval69:
I confirm whilst all.
[Focus General] hapa papa:
I am still running a stock focus with no sd card, no case and no screen protector. I can confirm that I have experienced some lack of responsiveness, but it is pretty rare
[Focus General] mcorrie1121:
I guess I don't have it too bad with my SD card issues, as it only occasionally turns off when bumped, and there hasn't been any data loss. Performance seems fine too.

Can I get a link to the certified Samsung card, though? Might try it out and compare.
[Focus General] kawgirlval69:
just eBay it... To your door $25
[Focus General] mKTank:
Mod Edit: [Link Removed]

Don't worry about getting ripped off; that seller has a stupidly high rating.
[Focus General] jeff.holsinger:
I see the behaviors on my focus as well. Kicker is I don't have a card installed (yet). I have one sitting here (a Samsung 16GB), but I am waiting until the NoDo release. I also get the non-updating icons behavior occasionally. I think it has more today with either a lot off apps being installed or some as yet unknown memory leak. I haven't tried powering cycling the handset to see if it happens right after, so I can't say with any certainty.
[Focus General] SuperSport:
For me, immediately following a power down and back up, NONE of the issues are there. It's only after being used a while. ODD... :confused: Maybe it could be a memory leak as mentioned previously since it seems to get more and more prevalent over time.

PS: He's down to 22.49 to your door![/URL] I think this thread has given him quite a bit of business. ;)

Mod Edit: [Link Removed]
[Focus General] mcorrie1121:
Wow, that's a great deal for ANY 16GB card. My Sandisk was 25.
[Focus General] mcorrie1121:
Does your progress in XBL games save over the cloud? I'd like to keep my progress in ilomilo and The Harvest when switching cards.