yashsingh1/xdaforums huggingface dataset:
[HD7 General] elyl:
Cool, I'll see what to do after the official Mango release, I just want to see how widespread the problem is. If I ask for a replacement from SanDisk, I guess there's absolutely no guarantee I'd get a suitable replacement - bit of a lottery again :rolleyes:
[HD7 General] dorianmuthig:
No, there isn't. And as of late they even make cards that pass the Microsoft spec test but still don't work in Windows Phones, which is especially concerning... (it's got something to do with saving NAND flash manufacturing costs by changing sector sizes and alignments to reduce parity bits and control pathways).
[HD7 General] arsenalfreak:
does somone know, how to format a microsd card from a hd7? I had a 32gb card in my hd7 but I destroyed the phone and would like to use the microsd card in a android phone ... when i plug it in it doesnt show up and also tried with a nokia but it showed up that it was password protected.
[HD7 General] dorianmuthig:
Put it in the Nokia phone, when it prompts for a password, select cancel. Now open the file manager under Applications -> Tools (-> Office Tools) or Programs -> Gallery/Galleries, select the SD card's menu (tap and hold on a touch screen phone), choose Format and follow the instructions. You don't need to know the password.
[HD7 General] detox8907:
Does anyone have their 32gb sd card working on mango? Mango was just officially released today. If so what kind of card is it? mine stopped working I had to switch back to the original 16gb
[HD7 General] samaritrey:
I am using a 32gb sandisk card in my arrive. I had no issues doing the update.
[HD7 General] Ttblondey:
So you're now on Mango with the 32gb Sandisk card.Am I right?
[HD7 General] dorianmuthig:
I upgraded all my phones and they all work without any storage related issues.

The SD cards used were all SanDisk Class 2 cards (SDSDQM-032G-B35 and SDSDQ-032G-E11M types) and one SanDisk Class 4 card (SDSDQ-032G-J35A)

Yes, and it works great.
[HD7 General] ayman1671:
Hi i really need some help, I tried putting 32gig sd cad in my phone exactly how the instruction says. Now my phone says i only have 12 mb of space and it says my sim card is invalid or damaged. I tried plugging it to the computer and it says it wont connect. I tried putting the 16gig back in and still the same thing. If anyone can help me it would be veryy appreciated thanks
[HD7 General] dorianmuthig:
Your 32GB card is either incompatible or broken. To use it in again in a computer, you need to format the card and delete the security parameters. You can use a Symbian phone for this.

As for your 16GB card not working, make sure it's inserted properly, then reset your phone (Settings -> (system) about -> reset your phone). If it still doesn't work, you broke something.
[HD7 General] roadrunner_ak_uk:
samsung cards?

think its worth trying this card?

http://www.ebay.co.uk/itm/Genuine-S...emoryCards&hash=item256791973d#ht_1550wt_1395

or should i try to find a class4 samsung card? might be worth a shot since the sandisk cards seem to be very hit & miss...
[HD7 General] dorianmuthig:
You can try the card if you like (check with the seller, if they will take it back and get you a refund), but please be aware that the class rating of SD card only specifies minimum sequential write speed and that Windows Phone needs very specific sector sizes and random read speeds (>200 4K IOPS, >100 64K IOPS, ideally with >500 4K read IOPS) which this card may or may not meet.
[HD7 General] mikeshell:
... same identical problem.

Do you think reinstalling 32gb card could work again ?
[HD7 General] dorianmuthig:
Again, there have been no changes in the memory card requirements. If you have a problem with your card, backup your phone and have it replaced with a working compatible card that meets the required specifications. Those cards exist. Reinstalling a non-working or poorly performing card will not help.
[HD7 General] mikeshell:
My sd is Sandisk SDSDQM-032G-B35 (Class 4) (see tutorial on first page of this thread).

It was fully functional on wp7 ...

I trust in you if you tell me that reinstalling doesn't work but the problem should not be the sd card.
[HD7 General] dorianmuthig:
Well, it could be your battery, if you experience sudden power offs or restarts on your phone, while you're using it or when you have bad reception.

If you are however actively told by the device that your card is bad, it is either bad or incompatible. What you perceive as "fully functional" may not have been the fully functional that it is supposed to be. In all likeliness your phone was very slow when responding to commands (more than 2 seconds wait time) and video or music playback had a stutter. With a good card you don't have those problems and chances are your phone is even faster than with the factory card installed.
[HD7 General] mikeshell:
Sorry a i did not explain well the problem.

It was fully funxyional with wp 7.0 (no restarts, no delays, no messages 'card is bad'). Problems began only with mango.

Restoring original card hd7 works fine again.

The problem is not only the card but is mango too.

'cause my card is one of tutorial compatible card do you know an reliable compatibility list ?

Thanks
[HD7 General] dorianmuthig:
There are no distinctly compatible cards anymore, any new Toshiba/SanDisk made card should work (there's no way for you to make sure the card you buy will be of a recent batch, though). There is no way for consumers to get single a card that will definitely work and be up to spec for Windows Phone 7 Series phones. You have to order them by the thousands directly from SanDisk or Samsung (Micron doesn't supply any) under their OEM supply policy.
[HD7 General] pantsaregood:
Just put the recommended card in my HD7. Can't tell if all is well or not. Watching video is flawless, but app installs seem slow. Used WPBench and got storage writes of under 1MB/s on a few occasions. Now I generally get between 3 and 8 MB/s.
[HD7 General] dorianmuthig:
Sounds to me like your card will be just fine. That is, if it passed the spec test in your computer.
[HD7 General] pantsaregood:
I couldn't run it on my computer. Kept getting write protect errors. Don't think the card reader on my printer supports writes.
[HD7 General] elyl:
This tallies with my experience. It is curious that we've had at least the three people in this thread who had a functional card before Mango, and now it fails as soon as Mango is installed.

To me, that says something has changed.
[HD7 General] pantsaregood:
Is the fact that I didn't get to benchmark my SD card going to be a problem? I'd rather my phone not crap out randomly. Any way I can verify it now?
[HD7 General] dorianmuthig:
A lot has changed, but none of the over 500 changes made and features added should have any effect on your SD card, unless you have a bad card. The specification requirements are still exactly the same.

Well, you can remove the card, format it in a Symbian phone and test it using a USB SD card reader or SDA standard device. Due to API limitations, testing the card inside the phone is not possible.
[HD7 General] pantsaregood:
Don't have access to a Symbian device at all so I don't really have the option of formatting the card. Would I be best just having the card replaced It seems you're implying that something could be catastrophically wrong with it.
[HD7 General] dorianmuthig:
The card is probably fine, but you may not get the performance out of it some applications may need or your phone may be slower than it should and you'll never know. If you can live with it, everything is just peachy.
[HD7 General] pantsaregood:
well, 720p video recorded fine. Is there some app that really stresses reads/writes that I can check for issues?
[HD7 General] dorianmuthig:
No, because as said, the API doesn't allow for selective tests of the worst case scenario at which you may have issues. You can however fill your phone completely with music, delete songs randomly and then install apps that are larger than the gaps to see what happens when you run them.
[HD7 General] pantsaregood:
I'm going to get a replacement. I attempted to load a NoDo backup and nothing happened. Got an error from Zune saying I couldn't restore the backup.

I'll find some way to bench the card this time - I don't really like not knowing if my card is underperforming.

EDIT: With the 32 GB card, "installing apps" took roughly ten minutes during WP7 setup. With the default 16 GB card, it took around 30 seconds.

EDIT2: WP Bench is consistently showing 25*5 MB writes to storage at writing at between 8.5 and 9.5 MB/s, as opposed to the erratic (and sometimes slow) speeds of the 32 GB card.
[HD7 General] dorianmuthig:
Well, according to that, you shouldn't use that card. It sounds like it is far too slow for Windows Phone.
[HD7 General] irarkh:
Hi there,

Well done, just wondering why HTC made itself limited on this simple approach:confused:. Is there any compatibility results on the Transcend models?
[HD7 General] dorianmuthig:
No, there isn't. But from what I can tell, they don't manufacture the SD cards, which means they likely do the same thing Kingston does, they buy the cheapest cards they can get their hands on from SanDisk/Toshiba, Samsung or Micron Semiconductor. If you're lucky (very lucky) your card may work, but considering the prices you get online these days, just stick with what has higher chances of working.
[HD7 General] zard:
@dorianmuthig,

I just upgraded my HD7 with Mango RTM with the HTC drivers. If after I put in a new 32GB sd card, do as per post #1, after completing, can I use Zune to restore my last backup? Hope you could advice me. Thank you.
[HD7 General] dorianmuthig:
No, unfortunately you can't restore a backup to your phone if its storage size has changed. You can try it, if you like (you can't break your phone), but it will fail.
[HD7 General] tillyboo:
Will this work?

I enquired about the 32GB Sandisk card that Amazon sell..

They said that it had the model number: SDSDQM-032G

This is effectively the same as SDSDQM-032G-B35 but without the B35 bit on the end...

So I was wondering if it would work?

cheers!

---------- Post added at 03:55 AM ---------- Previous post was at 03:51 AM ----------

It's really hard to find SDSDQM-032G-B35 where did you guys look?

I'm from the UK...
[HD7 General] Kronoturbo:
Hi, i have the same problem...

my card is 32gb with final b35.

With beta mango it works fine...in write non very fast like original 8gb,but no reboot or othet problems.

now with official mango + HTC upgrade i have many problems... reboot,freeze, and superslow in write...yesterday i put another Rom and i test immediately wp bench...in write i had 6,9 mb...good. But after i install some app and sync my photo, the bench write is 1,15mb...incredible...and 1mb bit stable...

my opinion, the problem is not mango but the upgrade HTC.

What is this upgrade? Firmware? Is possible replace this firmware with old firmware?
[HD7 General] dorianmuthig:
Guys, I get it, you want to have a working reliable card, but sadly, there is no way to ensure you get such a card from a retail seller anymore as all newer cards (class 4 written on them) now share the same internal type and make. You can still try to get a SDSDQM-032G-B35(A) class 2 card, but those cards aren't necessarily working either, because you may get one of the really old cards.

The only way to get a working card is to find a seller with a good return policy (in Germany and most of Europe this is mandatory for online sales during a 14 day period), testing the card in your computer to make sure they pass Microsoft spec. requirements, and then trying it in your phone to see if it had the right internal sector size and alignment (the phone will be very slow and show a bad card message after "phone settings reset" otherwise). If you got a card that didn't work, return it and demand another one or your money back, the latter case of which you try another seller.
[HD7 General] Kronoturbo:
ehehe...I thought this idea...I buy other card and I return my actual card...eheheehe...this is the only solution easy...but I want to know why now it don't work....how to change from beta mango to mango official(+ htc update)...
[HD7 General] dorianmuthig:
This is fraud. If your card doesn't work anymore, you have a 2-year warranty through your seller or a 5-year warranty directly through SanDisk. Clear it with them instead.
[HD7 General] vandamage:
LOL I was in a shop last week, saw the el cheapo Kinston cards, bought one 32GB Kingston class 4 card, opened my HD7, changed the card, reset the thing and BAMMMMMMM broke the card. Well I had warrenty so changed the card for another one, did the same and BAMMMM killed another one. So deffenately Kingston isn't compatible, I'm convinced too now ;) Now I'll just go searching for a shop where they sell Sandisk
[HD7 General] dmw_4814:
I purchased a 32GB SanDisk microSD card from a seller on Amazon.com last week. The seller listed the item as SDSDQM-032G-B35A. I sent them an e-mail asking them to please make sure the card they sent me was that EXACT model number and nothing else. They responded later that day saying they canceled my order because they only had SDSDQM-032G-B35. I replied that was the same card as the other number, just without the adapter, so it was O.K to ship it to me. Well, I got home from work today and opened the package to find that the card they sent me was a SDSDQM-032G-B35N, which I've read on this forum is not compatible with Windows Phone 7 devices. So, I have to send the damn card back now - man, I HATE a lack of attention to detail!

Where can I get the CORRECT microSD from? There are several sellers on Amazon that list just an "SDSDQM-032G" card. Will any of the following cards work?

http://www.amazon.com/SanDisk-SDSDQ...06Q2/ref=sr_1_6?ie=UTF8&qid=1318660829&sr=8-6

or

http://www.amazon.com/SanDisk-Flash...WHN0/ref=sr_1_1?ie=UTF8&qid=1318660829&sr=8-1

I'd appreciate any help directing me where to purchase the CORRECT 32GB microSD card for my AT&T HD7s! I had a SanDisk 32GB microSD card in the phone already, but the phone started rebooting constantly after about 2 weeks (not sure why, I had immediately loaded approx 25GB of music onto the card after installing it!), so it must not have been compatible (it was one of those purchased from "bulk packaging"). I put the original 16GB card back in and have not had a single reboot in over a week, but I can't fit enough of my music on that card!

Dennis
[HD7 General] Cadetto Entusiasta:
it's possible that a find a three microsd cards of Sandisk SDSDQM-O32G-B35 32Gb class 4 that it not work? with all three card, my HD7 said that this memory is damage or not present in you...

could you tell me why? I just spend 100 euros and more for this card and i hope to resolve this problem...

there is an other memory compatible for this use?
[HD7 General] dorianmuthig:
yes, that is possible, because some of these cards have different sector sizes (their flash memory is 8K sectors instead of 4K sectors, which gives you 128K blocks instead of 64K blocks). This doesn't change anything for sequential access or RPU (there is a smal wear leveling processor in every one of those cards) cache optimized max IO access, but results in poor performance if requests are larger than the extremely small internal cache (or spare area).

Try to return the card and get your hands on one of the newer class 2 cards. Those should work, but again no guarantees.

If you'd like, I can offer you to upgrade your phone. All you need to do is pay for the card, return shipping, a small service fee (includes warranty for the remainder of your regular one which would be void) and any transaction fees arising from the payment method you would like to use and then send me your phone (phone with battery, back cover and all of its internal components, I don't need your accessories, SIM card or packaging) and a copy of the purchase invoice (with full name, address of you and the seller on it). Drop me a line, if you're interested, there is no obligation for you to use this service, I will answer any and all questions you may have on using the right card publicly in this thread completely free of charge so you can do it all by yourself.
[HD7 General] dmw_4814:
Are you performing a hard reset when powering the phone up for the first time after changing the card? You need to do this IMMEDIATELY after changing the card, when you power it back up for the FIRST time! Otherwise, you will get the message that your card is damaged, missing, or not working. You perform a hard reset on an HD7 by holding in BOTH up & down volume keys and pressing the power button, and then the phone should boot into recovery mode. Follow the on-screen instructions to perform a factory reset. The phone will then format the card so it can use it. Try this if you haven't already; I think this will solve your problem!

Dennis
[HD7 General] dorianmuthig:
You can also factory reset the phone via Settings -> about -> [reset your phone]. That yields the exact same result and is usually easier to do, but whatever floats your boat...
[HD7 General] tillyboo:
But how can he reset from within Windows if he cannot boot into it?
[HD7 General] dorianmuthig:
The phone will always boot, even if the storage has been corrupted, providing access to the basic phone functions like calling, text messaging, web browsing, email and the settings. Remove your card and try it, if you don't believe me.
[HD7 General] tillyboo:
Its not that I don't believe you, I was just curious :)
[HD7 General] dmw_4814:
Every time I've changed a storage card in a Windows Phone 7 device, it comes up with the message that the storage card is either corrupted, missing or not working, and the only two options available are emergency calls only or turn phone off. In that case, the only recourse is to boot into recovery mode and perform a factory reset.

Dennis
[HD7 General] tillyboo:
Does anyone know where I can get a working Memory card in the UK for a reasonably cheap price?

Cheers!
[HD7 General] Cadetto Entusiasta:
Thanks dorianmuthig, I will try with a microsd card Sandisk SDSDQM-O32G-B35 32Gb class 2; and thanks for your offer of assistance, but my customs I would pay a lot, and not worth the candle...

Dennis, I immediatly performing an hard reset with an up & down volume + power button, without I have turn on; then, the automatic configuration of HD7 set language, date and hour and finally install the apps, but in this operations, the phone is restarting and after about 1 minut, you said the card is damage or missing.

If I understand, you said a remake two times the hard reset with up & down volume + power button, also if the phone said in the first hard reset that memory is damage or missing??

Because first I pay a new microsd card, I try yet this solution...
[HD7 General] dorianmuthig:
Try http://www.amazon.co.uk/ or http://www.idealo.co.uk/

Actually, if you fill out and attach customs form CN23 and mark your item under HS tariff number 992298 (which is repair services) your shipment will be excempt from customs tax and import sales tax in most countries (after all you already paid tax when you bought it). Please be aware however, that this requires that your shipment be sent with a service request or a service invoice (on return) and that you allow your shipment to be opened for inspection and/or attach all documents visibly to the outside.

If your card is detected as damaged or corrupt, no software method will help fix your problem. The only thing you can do is reinsert the card that you removed or replace the card that is damaged, broken and/or incompatible.
[HD7 General] tillyboo:
Amazon apparently only have the model number:

SDSDQM-032G

I understand that SDSDQM-032G-B35 is the only compatible one?
[HD7 General] dorianmuthig:
They have a return policy, just order one, see if it works and return it if it doesn't. That's the best you can do right now, anyway.
[HD7 General] tillyboo:
Just ordered one from Play.com. It does say it's SDSDQM-032G-B35 on the page...so hopefully it actually will be...I know some sites have false information on them..

Fingers crossed!

Also, my HD7 sometimes reboots on it's own and occasionally shows a message saying the memory card isn't working...

I haven't done anything to the actual memory card but it seems as though it's stopped working by itself... Hopefully (if it is the right one) this card will fix that as well as give me 32GB!
[HD7 General] 4400alle:
Hi

I ordered a Sandisk 32gb class 4 and I put it in my HD7 as tutorial said. Everything worked but when I would insert some music on it so restart the phone several times and I got the message is that the memory card did not work. I hard rebotted the phone again and everything worked until I could insert music again. But when the phone would start up again and it was stuck on the HTC screen.

I emailed the company and they said I had bought the SanDisk 32GB SDSDQB-032G-B35.

So to my question, can not use SDSDQB-032G-B35 in my HD7?
[HD7 General] dorianmuthig:
Memory cards don't stop working by themselves. You may just have used a slow card, which was far too slow when overwriting sections that had already been written to. (There is some tolerance after all)

Did you test your card in your computer for Microsoft spec. speed requirements before you put it in your phone? Because that sounds to me like it may either one of a bad card (what the message says, stuck on boot) or a bad battery (sudden reboot or power off). Please be aware that through use, some wear occurs, and batteries are only good for ~1000 charging cycles.
[HD7 General] 4400alle:
Thanks for the quick reply:)

No, I did not test the memory card in my computer. What specs should I have when I test the card?

And I do not think there e anything wrong bateriet because I've only had my HD7 for a week so it's like new.
[HD7 General] dorianmuthig:
At least 200 4K IOPS and 50 64K IOPS, better is 250+ 4K IOPS and 100+ 64K IOPS as well as 4MB/s sequential write.

You may have a faulty one. Check with your mobile operator or retailer for a replacement, if it's not the battery, it could be the card, but first check your battery, it's easiest to replace.
[HD7 General] 4400alle:
okay thanks for the answers :)
[HD7 General] 4400alle:
Hello again, I was just wondering how I format the memory card in my computer? I have no other device that supports a 32GB memory card and the computer does not recognize the card. :/
[HD7 General] nalgrim:
Using a lexar microsdhc 32gb class 10 code on retail pkg lsdm132gbsbnar rev c. Got for$70 on Amazon....take your chances.
[HD7 General] nalgrim:
Be nice for a compatibility thread of cards. this is great tutorial thread btw. Thanks
[HD7 General] mcsc:
I tried the lexar microsd hc 32gb class 10 microsd card and I had slow restart issues and slow running app issues, plus when I tried to upgrade to mango beta it would hang on the restart.

I went with the approved 32gb sanddisk class 4 and I've got about 20 gigs of music on it with no issues.

If this helps don't forget the thanks button.
[HD7 General] fiery.sagi:
How to re use?

Any ideas how to reuse the memory card that came in the phone?

and Does it still work with Mango??
[HD7 General] dmw_4814:
The ONLY way I know of for sure to make a memory card that was used in a Windows Phone 7 handset useable again is to insert it in a Nokia phone with the Symbian operating system. The phone will recognize the card and although it will ask for a password, you can just hit cancel, then use the phone to reformat the card. It will then work again in anything. I had to do this just two days ago; I had 16GB & a 32GB cards that wouldn't work, so I found a small cell phone store that had a used Nokia phone. I went up there and they let me use it to format my cards. Now, they work like a charm!

I also heard a digital camera might be able to reformat them, but I haven't tried that, so I can't verify that fact.

Dennis
[HD7 General] giorgiokatr:
my hd7 has 8gb memory

i was thinking upgrading to 16gb instead of 32gb

anyone knows any compatible 16gb card?