yashsingh1/xdaforums huggingface dataset:
[Focus General] gahbmwm5:
Well for experimental purposes, after throughly reviewing this entire thread, I decided to put in a old 2GB SanDisk Class 2 card (had it in a BJII), then performed a hard reset (also from within the internal phone settings.)

Thus far memory was recognized, with no issues...(random reboots...)

Will update, if/when I experience any issues.

Also, I do not have NoDo (forced install), and do not plan to fill up my devices 8GB internal memory with media files (music, pics)....as I have reviewed that the majority of issues are occuring when the sd card is actually being utilized...until there is a solution from both MS and OEM (Samsung), and carrier (AT&T.)
[Focus General] TOA Duck:
I saw this in a tweet from

mix11 today. Interesting how this gives us insight as to why some cards are successful a d some are not. See attached pic. As you can see large sustained write speeds are not important at all.

Someone should test cards to target those specific specs in the first column and that would be the card to get.

http://www.istartedsomething.com/20...n=Feed:+istartedsomething+(istartedsomething)
[Focus General] Stoneysilence:
Adata 16gb Class 10 DOES NOT WORK.

Soft reset initially sees it but after that it says only 15gb is found and 10gb is usable but data does not survive soft resets.

After a hard reset the same thing. All soft resets lost all data.

Very disappointing. :(
[Focus General] CrownSeven:
Hope this isn't a repost, but AT&T is now selling certified sd cards?

http://www.engadget.com/2011/04/15/windows-phone-7-certified-microsd-cards-emerge-at-atandt-stores/
[Focus General] TOA Duck:
Too high. Like I said earlier above, I am gonna test some cards with benchmark tools to find a card that meets the criteria in the pic posted at Mix11. just gotta make sure I can return them, but I am optimistic about the process cause we nw know what the target numbers to achieve are. I'll post my results as I go.
[Focus General] eondei:
AT&T stores are now selling the first Windows Phone microsd card certified by Microsoft. Unfortunelly the only version is 8Gb class 4 from Sandisk.

I wonder if it really works.
[Focus General] Soundtweaker:
So would the Samsung 32gb Class 4 MicroSDHC card be a reliable card to use after the NoDo update is installed?
[Focus General] PaullikesWINMO:
Or is there any 32GB card that works ? And I mean works for majority of people that have a Samsung Focus and have had minor to no issue with a 32GB card in it ?
[Focus General] antiquegamer:
I try it last night and so far so good. It seems faster and not lagging like when I was using Sandisk 16gb Class 2 (which cause ramdom reboot). Also I used to have icon lag even without SD card when I exit certain app and that seems to be gone (not sure why, could be the phone is not very full now my phone was at <2gb before I install the card).

I restore the phone back to pre-NoDo (it was unlock/unbrand), install card, reset the phone, reboot a few time (and it seems fine). Unlock the phone, unbranded and Zune automatcally update my phone to NoDo. (Updating was superfast when there is no content sync - so my next update I will probabably unsync all the data first).

It's working great so far but we will see, since my last adventure with SD card lasted about 3 weeks then the phone start rebooting.

Price suck (pretty double what you can get on-line) but I can return it if it doesn't work and I also can be sure I am not getting fake card.
[Focus General] BigwaveMx:
I can confirm Sandisk 32Gb Class 4 works with focus. No issues since last saturday. I have almost 15 Gb of music and 1 Gb of pics. Data still remains after many soft resets.
[Focus General] jodywallin:
Jody Wallin

I purchased one of the newly released, Windows Phone approved, 8GB, class 4, microsd cards at the AT&T store this past Saturday, April 16. I've had my Samsung Focus for about 2 months. I went through the format instructions as provided on the AT&T Samsung Focus, Miscellanous section of their tutorial (by using the power, volume, camera keys togther.. you need to read the exact instructions). After formating the card, it first showed the incorporation of memory under Settings; About. But shortly reverted to 8 MG in the report area.

So, after a bit more studying of the instructions (above mentioned) I realize that the phone hadn't automatically gone into the inital setup that was mentioned in the instructions. I took a leap of faith, went to Settings; About; reset your phone. I reset the phone, it immediately showed the new memory from the 8 GB card for a total of 14+ GB. I then reconfigured it, reinstalled all my Apps, setup my email, etc. and it has worked perfectly ever since. It has continued to show a total storage of 14.59GB and I now show 13.20 GB of Available storage after installing all my Apps, music and pictures. The phone is very responsive, in fact if anything, it seems slightly faster in it's responsiveness than before adding the memory card. Good luck to others who try it.

My advice is to go for it. I am glad that I did.
[Focus General] kms108:
are these certified cards really different, or just the same as any retail sandisk 8GB class 4 cards, that microsoft found to be working out of the bunch that they have been testing.
[Focus General] Mallux:
So, now that the official update for the Focus is out, I want to attempt to install an SD card once again. The last couple of times haven't gone so well. The phone simply resets every time it's turned off :-/ I was curious as to whether or not this is what happens when one doesn't format properly. I didn't realize i had to use the special format button press combination, so I assume that's why things went wrong. My question is, if i install an SD card and it doesn't work properly, will i be able to uninstall it and reformat without having any lasting issues?
[Focus General] kms108:
if you are talking about the sd card, you wont be able to use it after it's been in the windows phones, this is also the same with the htc mozart that i have, you will need to return it to the manufacture for warranty claims, or a exchange. Some one did mention that the nokia N8 can fix the sd, has anyone tried it and can confirm it works.
[Focus General] Mallux:
I'm referring to the Phone itself. If i remove the SD card, can i reformat it again and have it work properly or will it need to be exchanged?
[Focus General] SuperSport:
Yes, you can reformat your phone to factory settings.
[Focus General] TOA Duck:
i have called and visited several ATT stores and neither do they have the new cards nor do they know anything about these cards. its frustrating cause i will buy one if I can find one.

i even called the customer support 1-800 number and they knew nothing about it.
[Focus General] Mallux:
and i assume it's the same process: Vol Down + Camera + power key

correct?
[Focus General] SuperSport:
That's correct. It will verify you want to format and ask you to press the Windows Key twice. After that, it will go into Phone's First Setup.
[Focus General] SuperSport:
I'd almost bet they just found some that worked reliably. I'm sure someone will eventually post the specs so they can be bought cheaper without the Windows Phone Logo and ATT's exorbitant markup.

For now, for me, my Samsung 16GB Class 2 has been flawless. As a matter of fact, My Samsung 16GB Class 2 actually transfers Data Faster than my SanDisk 8GB class 4 according to 'WP BENCH' app.

4.9 MB/s as opposed to 3.02 MB/s.
[Focus General] SuperSport:
Is there any chance the two of you can run the Performance Benchmark using WP BENCH app found in the Marketplace, and post your SD Card results? I'm curious how they stand up to other cards. My Samsung 16GB Class 2 is running 4.9 MB/s. This is after the "Official NoDo" update today.
[Focus General] boston2890:
First - a big thanks to all of you that performed the tests and contributed to this thread. I've been following this thread since day 1, as I've had my Focus since the first day it came out. I've held off on doing any Memory upgrades, waiting for a software release. Now that NoDo came out, I'm ready to give it a try. I'm ordering the Patriot 16GB Class 4 card, as I've read enough positive reviews on that. Hopefully this goes well.

Also - wanted to chime in that the Sandisk certified cards at AT&T finally being release - right after NoDo is finally released for AT&T, is certainly no coinsidence. Since that card was initially slated by AT&T as certified (last November) I would bet that Microsoft worked with them to get this OS update to work with this card - at least with higher stability. In doing so, AT&T agreed to release the NoDo update and probably have a deal with Samsung on the SD cards.

I'm sure as a nice side effect of this, other SD cards will be more stable - although not tested or certified.

This is my opinion of what happened, and to me this was 6 months past due and greatly impacted their WinPhone 7 sales. Now I hope they put some effort to get that SharePoint office hub app to actually work for users of SharePoint, without purchasing special servers to do so.
[Focus General] dPen:
Works: Sandisk 8gb Class 4 (SDSDQM-008G-B35N) sdhc card

Hi guys, just wanted to share this; I have Samsung Focus (WP7 updated to ver.7390 via Chevron tool); I bought a Sandisk 8gb Class 4 (SDSDQM-008G-B35N) sdhc card and have been using for about a week now and no problem what so ever; transferred a few gb of music/movie files.. works just perfect. (I turned off the phone by pressing power; inserted the card; turned-on the phone; went to settings-about your phone, then selected 'reset your phone' from the bottom of the screen; phone resets to factory defaults... starts over all the process and boom... I got the memory extended (total available memory from 7.39gb to 14.59gb.

I just had the phone go thru the official NoDo update via Zune (over Chevron forced NoDo) with the card on... and everything went just like charm!!! The card really seems to be one of the reliable ones.
[Focus General] FishFaceMcGee:
I just tried WP Bench after running the Samsung Update, and I think the theory that Samsung has fixed it is proving to be right. I my WP Bench benchmark for Storage went up from 2.45 MB/s before the update to around 3.5 MB/s after. I'm still using the same Samsung card I've been using since Jan/Feb.

At the very least, if they didn't *fix* it, they've improved the support.
[Focus General] arm_jstp:
I have Sandisk 8GB class 8 on for 2 days, it works fine. My phone is March updated.
[Focus General] TOA Duck:
The SanDisk 16 gb class 4 is solid after nodo and firmware update. The SanDisk 16gb class 2 is not as stable with random reboots throughout for me.
[Focus General] FJosep:
Is there a 32 gb card that's confirmed to work?
[Focus General] krazers:
After I applied the AT&T Nodo update, my Sandisk 32gb c2 card from AT&T works perfectly. The unbranded Nodo update I tried prior to that still had issues.

Based on my past experiences with this card, I would say its officially works now. No freezing, rebooting, or stuttering.
[Focus General] revrak:
thanks, anyone else ?(hopefully with a card i can buy from amazon or ebay :D)
[Focus General] Mithander:
Hate to be the bringer of bad news but...

Since I did the NoDo update it kinda crapped out the MemCard I had in there. It's a Kingston 32GB Class 4 and before the update it was working perfectly fine, after I applied the registry fixes, though my phone was a bit unstable with random freezes. After NoDo the freezes were gone (I did a reformat with NoDo installed just to have a clean phone). Then when I started syncing stuff there was no issues UNTIL I hit around 7.49GB of music synced out of about 30GB of music. Then the device gave the C00D124D error to me. I unplugged and tried to resync the device and it lasted for 12 songs then error'd again. I reformatted it again, whipped it, hard reset, and still the same thing happened. I even tried reverting the OS using the recovery tool and no dice... Sorry, but 32GBs (at least the Kingston) is gonna have to stay under unstable...
[Focus General] TOA Duck:
anyone have luck with the sandisk 32gb class 4 cards on ebay or are those all fakes or defective.

att and verizon's 32 gb class 2 cards run 150 bux a piece.
[Focus General] SuperSport:
Are you sure those are Focus Compatible? I can't find that on their sites yet.
[Focus General] kms108:
can you actual confirm you have a class 8, to what i have gathered, there is no such thing as class 8, and sandisk has only released the maximum class 6 which is the 8GB ultra mobile class 6 read speed approximate 31MB/s and write speed approximate 13MB/s, now it's discontinued.
[Focus General] TOA Duck:
the sandisk class 4 cards are working.....8gb and 16gb.....trust me.....

I wanna try the 32.

I have now tested 6 cards and the sandisk class 4 cards are good.
[Focus General] xtian63:
how about 32gb patriot cards?

Class 10 http://www.frys.com/product/6464842?site=sr:SEARCH:MAIN_RSLT_PG

Class 4 http://www.frys.com/product/6464852?site=sr:SEARCH:MAIN_RSLT_PG

would these work with the focus? has anyone tested them?
[Focus General] arm_jstp:
Hello, Sorry for the mistake. It actually is class 6 Sandisk Mobile Ultra 8GB. Its font is so small so I have to use macro lens to verify its proper class. It was EXTREMELY EXPENSIVE by the time I purchased.

This in one of the class 6 SDHC which is fully compatible with Samsung Focus.
[Focus General] knwldg0010:
I posted this in other post, but it should be posted here too.

I originally did the update by the hack. Then when official update came out, i reverted to the backup, and then did the official update. Then i had an overall usage of over 10 gb and then that's when the problems started. I had to re-establish my phone with the Zune software, then i had to sign into my phone again. Now i can't add email accounts to my phone. Tried to revert back to my backup, and now it is not showing. I'm assuming because i had to re-establish my phone with the Zune software. If i reformat i will lose homebrew and Unlock. Does anybody know how to bring back the backup again in zune? What are my options? I wonder if i'm having problems, because of the unofficial install?
[Focus General] nathantw:
I've been using a Sandisk 8GB class 2 that I purchased from Costco since the first day I bought the phone. The box says it's a SDSDQ-8192-AC11M. It had been working okay, then I did Hungary patch and it started rebooting periodically. Since the AT&T/Samsung patch though it hasn't rebooted once and has been very reliable.
[Focus General] TOA Duck:
I went to ATT yesterday to pick up a 32 gb slass 2 card and the manager told me that they were informed that the firmware update did fix the sd card problems and that sandisk cards will work, so .........(BTW, I took a printout of the sandisk card on amazon and he dropped the price on their card to 80 bucks so I would buy it from them......your mileage may vary but it paid off for me.

It was interesting that he told me this when we havent really heard any official public announcement on it.

I had a similar problem and I started over from scratch (which I have done with every card Ive tested) It fixed the issue but of course you will lose your unlock. (I have an official developer account so I can unlock every time.) I know this doesn't help you but............
[Focus General] knwldg0010:
Any bit of info helps.

I wonder if i got a bad card (which was bought from AT&T in november) or my phone?

Well i refomatted it using the *2767*3855# method. Added over 10gb of music, podcast, pics, video and apps, plugged it into my computer and went to sleep. The next morning it was completely off and i couldn't turn it on. I took out the battery, put it back in it turned on, but was acting like it had just been reformatted by asking me to slect time zone and etc. When it finally came to the home screen, all of my stuff was still there. I then connected it to the computer, but it stated start up process hasn't finished, please finish the steps on your phone. There were no prompts on my phone. I decided to reformat it again, but i don't know if i should go over the 8gb mark again. I wonder if it's a podcast? I had a previous problem where my phone was freezing, removed the podcast and it stopped?

Sorry for the story, but this is frustrating.
[Focus General] cppbronco:
First post list really needs to be updated. Not many people are talking about the Samsung (*not* Sandisk) 16gb Class 2 card, had to dig through this thread to find a few references to it. They can be had for under $30 so I think it bears mentioning.

h t t p ://bit.ly/iTNsTO

**The above is a link to an eBay auction, I am not affiliated with the seller and it is only for informational purposes**

I know some of you won't believe it until 2 weeks+ but coming off of a card that was definitely not compatible, I can tell the difference. Was using a Patriot 16gb Class 4 that had problems syncing after 7.49gb's, worked sporadically before NoDo and then it wouldn't sync at all.

I put the Samsung card in, formatted twice (hard reset, physical key method), and loaded 14GB's onto it without a single hiccup. Just for passing the 7.49GB mark without going into the "sync 12 items - quit" cycle is a working card for me. I've had no random reboots, and the phone is responsive in a way it only was for me before I put the Patriot card in.

I'll be sure to report back here if it ever gives me a problem but based on the few posts previously in this thread, this card works fine.
[Focus General] SuperSport:
I believe it's confirmed 100%. Haven't heard anyone say it's not working for them yet. I've had it in my phones since almost new (12/27/2010) and never a reboot or lost data.
[Focus General] eondei:
Yes I tested the Patriot 32Gb Class 10 and it definitely doesn´t work with Focus. It reboots often and results in data loss.

The worst thing is that after some usage the Focus bricked the card. :mad:

I´m currently using Sandisk 16Gb Class 4 with no problems at all - if 16gb is enough for you you can go on this one.
[Focus General] kms108:
if you search around, you will know that any card used in a windows phone is unusable, you will need to format the card using a nokia touch sceen phone like the c5, c6 or n8
[Focus General] eondei:
I know about that but when I said that the card is bricked I meant that it can´t even be used by the same device (Focus) that formatted it for the first time.

Assuming that the card is not bricked, shouldn´t it still be usable on the device that first formatted it? (what is really not happening)

If not, is this a situation that a Nokia device can solve as well?

Thanks for the info.
[Focus General] TOA Duck:
My list of confirmed cards in which I have tested the past 2 weeks. Each card was loaded until only 2 gbs or less left on the card and let run for 2 days. I reformatted with 3 button method on each install.

This is simply MY list and based upon MY experiences only. Your mileage may vary but as others are saying I firmly believe samsung has improved their SD card interaction with many cards however not all.

Transcend 16 class 6---still not working-failed immediately

Sandisk 16gb class 4- works flawlessly (acquired from Walmart)

Sandisk 8gb class 4- works flawlessly (acquired from Walmart)

Sandisk 32 gb class 2- works flawlessly (make sure you get the one from ATT or other Dependable location.)
[Focus General] Omega Ra:
NEVERMIND LOL. But I have a 32GB class 4 Kingston in my Focus. Had it to about 19GB full and it was fine for about a week or so before the random reboots.
[Focus General] reverseswing:
the samsung 16GB from ebay works for me too

the samsung 16GB from ebay works for me too - i bought a 2nd one from them yesterday to put in my wife's Focus as well.
[Focus General] eondei:
Below is a possible solution, given by Patriot support team, for those who might be trying to use class 10 microsd cards. (maybe this tip could work on other classes too).

I´ll try this solution on my Patriot 32Gb Class 10 if I can "unbrick" it using a Nokia device.

"We have found that there is an industry wide compatibility problem with the new Android based and Windows 7 phones working with 32GB class 10 micro SD cards. We have seen issues with the Samsung Focus, Motorola Driod/X, HTC Evo 4g. We are currently working on a solution for this compatibility issue. Google and Microsoft have stated that there are known compatibility issues with 32GB class 10 micro SD cards and are working on a solution as well.

We have found a fix that works in many cases, where you format the card in a Windows based PC, with FAT32, allocation size 32kb, and full format. This is not an official fix, but troubleshooting steps that has worked in many cases, we are still working on a permanent solution for this issue.

Thank You for choosing Patriot Memory!"
[Focus General] kms108:
it may not work if it's removed, if you put it back into the phone, you will need to go into setting and reset the phone, then the phone should see it and combine it with the internal memory, if not you need to format it with a nokia phone.
[Focus General] aussiejim:
Back in stock, now $16.99 - still an excellent price. Won't last long at this price.
[Focus General] TIGGAH:
I just ordered a 32GB Sandisk Class 2 card from pcconnection.. Here's hoping it works!
[Focus General] squalor:
Good luck to you TIGGAH, I wanted a 32GB but chickened out and got the 16GB Samsung c2 from Nicoli/Ebay that SuperSport uses.
[Focus General] TOA Duck:
the sandisk 32 gb class 2 I bought works flawlessly with no...i mean zero problems now. Got it from ATT for the same price as amazon (I bartered them down)

It is so nice having so much space. I love being able to convert .mkv HD movies to HD .mp4's. I use Tipard's converter program. The movies look amazing on the AMOLED
[Focus General] jodywallin:
SuperSport. I just saw your request and ran the WP BENCH app as you requested. I also got 4.9 MB/s on my 8 GB Windows Phone approved memory card. I've had it in my phone for almost a month now and so far, everything has worked great... both before and after receiving the NoDo update.

Hope that was helpful
[Focus General] TIGGAH:
You are giving me hope :) I really would like 40gb (minus system/math..)
[Focus General] PaullikesWINMO:
SOLD OUT .... I keep missing this great deal.
[Focus General] squalor:
This whole thing reminds me of overclocking PC's Some people had better luck just on the off chance of getting a good stepping, The lucky chip. Sandisk, Patriot, Wintec : these companys dont make chips. They package chips in microSDHC packages. Maybe Sandisk has more rigorous testing and binning that had led to their sucess.

Post 1077 from Krazers and post 1006 from MKohlman both describe sucess with the mem you bought but I think I read another where a Sandisk 32GB c2 was not stable. Maybe it was a bulk ?

Post 1059 from BigwaveMx states Sandisk 32GB c4 works. For others it don't. Did he get the lucky chip ?
[Focus General] TOA Duck:
They were not as stable before the firmware update. In case you missed it, the firmware update has made all sandisk cards stable, IF you get them from a reputable place in which someone else got one also.

My opinion.....
[Focus General] Sebo1985:
Sandisk 32GB Class 4 working like a charm since a week. 12GB left free.
[Focus General] seijuro:
Really....A 32gb card that works? With NoDo / no Nodo? Class 4 Sandisk huh....do you happen to have the model number of the card? (I also sent you a PM about this)

I plan to get the focus this weekend along with a 32gb sd card....trying to get it right from the start.