yashsingh1/xdaforums huggingface dataset:
[HD7 General] CyanideCake:
Hi dorianmuthig, I have been following this thread for awhile. I did purchase from the link provided, everything worked great the first time around. I then began syncing music to my phone, and I had filled about 26 GBS then all of a sudden my phone shut off. Now it's stuck on the HTC loading screen with that card. Ive tried hard resetting multiple times and Ive taken the card out and hard reseted between the 32 GB card, and the 16 GB (native) card.

The card I received in the mail says it's class four on the front, but I'm pretty sure this is a genuine card. It has the correct serial number and everything. This describes my situation perfectly, and I actually think it's referring to the same seller:

*EDIT* I'm a new user and I can't post the link yet. It's the fourth link down on Google if you type in "32 Gb microSDHC class 4 sandisk," on the Sandisk forums.

Also, my computer won't recognize either of the cards, does the HD7 put a lock on them? Under the assumption it's genuine, why doesn't it work anymore? It seems completely obsolete now. I hope I didn't waste $95.00.
[HD7 General] Dr.8820:
if you're in florida, try the 32gb card i posted about, trust me, it works. the op (the guy who took his phone apart so that we all could try this) used a 2 class card, as did i. not one lock up or freeze. i'm ignoring the other guy because he claims he doesn't work for sandisk, but all of a sudden he's an expert. a 2 class sandisk (oem) is all you need, alot of us in the states have went around what the "expert" said, and all is still well. i don't want a flamewar, we are here to help each other...but some of you have followed links from the "expert" and it still isn't working.
[HD7 General] dorianmuthig:
The SDA standard specifies a secure digital password or security key feature. Your phone will protect the card with a 128bit security key to prevent a thief from gaining access to your data. Most USB card readers do not support this secure digital feature. Get a phone that supports it (most Symbian phones and a lot of feature phones do) and use it to format the card (see its manual for help) to remove the protection. If you don't have such a phone, go to a mobile phone store and ask the rep nicely to lend you a Symbian phone to format your SD card.

I have no idea what your problem is with me, but this thread has been merged from two threads, one of which I created. My first post was this one: http://xdaforums.com/showpost.php?p=10354934

You can use whatever card you want, I couldn't care any less, I believe there's a list of cards in the Samsung Focus forums that people used successfully with their Samsung Windows Phones (edit, there it is: http://xdaforums.com/showthread.php?t=834144) where the SD card slot is user accessible, most of which resulted in poor performance, crashes and resets or other strange problems.

I'll say it again, the Sandisk cards are suggested, because SanDisk/Toshiba actually make their cards and they consistently are the same make and model. Lexar/Crucial/Micron or whatever they call themselves these days also make their own cards (http://www.lexar.com/products/lexar-microsdhc-mobile-card?category=90), but they're high speed (http://www.lexar.com/products/lexar-high-speed-mobile-microsdhc-card-performance-kit?category=90) or UHS-I models (read here: http://www.sdcard.org/developers/tech/speed_class/) which the HTC phones don't support (I don't know about the Samsung or LG ones).

Samsung make their own SD cards (http://www.samsung.com/us/consumer/learningresources/memorycard/pop_technical.html), but they don't sell them in retail, they sell them in bulk to OEMs like Nokia, Kingston, Sony (Sony Ericsson), LG and Motorola.

There are other manufacturers of SD card memory which make teir own cards, but they are all either too slow according to Microsoft spec (4K performance, mostly) or too small in retail quantity, that getting their products is incredibly hard.
[HD7 General] trueblackpercula:
I will be getting my brand new hd7 in two days from T-Mobile. If I put my SD card in it from my hd2 that has the android build on it can I run it on the hd7?

Thanks
[HD7 General] dorianmuthig:
You can use the card with your new HTC HD7, if the card is compatible and fast enough, but you won't be able to run the Android operating system from it, because the SPL bootloader for the HD7 doesn't support that and so far, there's no hacked SPL.
[HD7 General] mlongue1:
...and now the 64GB cards are finally starting to appear... (took long enough!)... hopefully someday we will be able to use them in our phones internally, and not just externally... :) and hopefully this will force the prices of the 32GB cards downward at a much faster clip... :):)
[HD7 General] Tuskuno:
Very good tutorial, but I wanna ask you something. Since you took out that SD mini card, couldn't you just copy the data on the 8GB to the 32GB and then boot the phone normal?

___________________

MacBook Pro 13" 2011

Sony Vaio 17"

HTC HD7

MOTOROLA RAZR v3

Nokia 5530 XpressMusic (that thing is ****)
[HD7 General] dorianmuthig:
Well, in theory you could do that. The problem is, for security reasons Windows Phone 7 devices protect SD card memory with a key stored on the internal ROM memory, without that key you cannot access the files on the SD card and therefore not copy them to your new card before placing it into your device. There is also no way of accessing the SDA protection password/key from within the operating system, you would need a special bootloader code and a JTAG device and knowledge of the key's storage position for that.

And even if you spend the $1000s for the equipment and software code licensing fees (Qualcomm, ARM) and sucessfully extracted the key, you would also need to know about and understand how the device stored the data on the memory card, and which values to modify to adjust to the new capacity without any data loss. It is much easier to simply recreate the previous state of the phone or make a backup via the Windows Phone Tools' APIs (proprietary, unsupported and so far only used when updating the phone's software). It's simply not worth the effort.
[HD7 General] str8blackk:
this is great
[HD7 General] JohnTKelly:
I Followed Your Link to Amazon

They even had it listed with the -B35 sku.

Unfortunately, the card has arrived now and I see an -A11M on the SanDisk packaging where the -B35 should be. Sux!

Meanwhile I ran the tests anyway.

-----------------------------------------------------------------------

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : No URLs for NOOBs

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 10.570 MB/s

Sequential Write : 5.349 MB/s

Random Read 512KB : 10.245 MB/s

Random Write 512KB : 0.458 MB/s

Random Read 4KB (QD=1) : 2.069 MB/s [ 505.2 IOPS]

Random Write 4KB (QD=1) : 0.942 MB/s [ 230.1 IOPS]

Random Read 4KB (QD=32) : 1.979 MB/s [ 483.2 IOPS]

Random Write 4KB (QD=32) : 0.977 MB/s [ 238.5 IOPS]

Test : 4000 MB [F: 0.0% (0.0/29.7 GB)] (x1)

Date : 2011/06/06 21:03:19

OS : Windows Server 2008 R2 Enterprise Edition (Full installation) SP1 [6.1 Build 7601] (x64)

Keep it or send it back?

Thanks!
[HD7 General] big:
Can replace for Mozart 16G TMo?

Thanks
[HD7 General] dorianmuthig:
Well, you could actually use that one. 512KB operations performance is still strange, though. Should be faster or at least equal to 4KB bandwidth wise. If you are however not happy with your purchase, they still sent you the wrong memory card.

Yes, however disassembly is different.
[HD7 General] SWatTX88:
Will this work for the HTC HD7S?
[HD7 General] dorianmuthig:
Yes, the HD7 and the HD7S are the same phones except for the camera module (HD7 european 16GB version) or both the camera and the display (8GB international version).
[HD7 General] SWatTX88:
Thanks. Can u suggest or link me the exact 32g card that I need to buy to make this work?
[HD7 General] dorianmuthig:
It would help a lot to know what country or region you're in. Since you want to modify a HD7S, I'll just assume you're in the continental US and that you'd like to order online.

Try one of the following stores:

http://www.buy.com/prod/for-sandisk...ry/q/sellerid/33006784/loc/111/220028276.html

http://www.amazon.com/dp/B004G606Q2
[HD7 General] SWatTX88:
Yes, Houston, Tx to be exact and yes. Thanks, I'll try it and get back to you
[HD7 General] epidemic215:
Returned the old one. Got my new one yesterday. So far so good. Still not in package and i think it is a Copy card. No lags on movies or music. Happy ATM ill let ya know if i have any issues.
[HD7 General] VodKa420:
dude you just made me feel so much better. I just ordered that a couple days ago and was worried it wouldnt work
[HD7 General] Boomer1911:
today i swaped 8gb with A-Data 16gb class 6 card and phone is working but i have no service from any sim card i tried. i think phone is faster with this card but its useless without service. any ideas please?
[HD7 General] dorianmuthig:
You might have inserted your mini-SIM card the wrong way. With the caera being at the top side, you need to insert the SIM card with the cut off edge on the top left.
[HD7 General] Boomer1911:
the sim card is correctly inserted and the result is same
[HD7 General] dorianmuthig:
Then you either didn't reassemble your phone correctly, and have no contact to your SIM card or broke your SIM card (shows "No SIM" in phone tile text) or you broke the antenna, forgot to attach the bottom cover or attached it incorrectly (the cover is the antenna and needs to be in contact with the two pins below the microSD card slot), the cell tower is offline or your provider blocked your device via its IMEI from connecting to the network (shows "No Service" in phone tile).

If you didn't assemble it correctly, try disassembling and reassembling it again. Make sure battery and SIM card aren't inserted while you do that.
[HD7 General] Boomer1911:
yea i forgot to put bottom cover back so the signal is back, but strangely after every restart phone thinks there is broken memory card >.<
[HD7 General] dorianmuthig:
Yeah, well that happens with pretty much all of the microSD cards except the Samsung and SanDisk/Toshiba made ones, likely because they aren't fully SDA compliant or their wear-leveling processor isn't working properly.
[HD7 General] Boomer1911:
than i guess nothing can be done unless preventing restart >.<"
[HD7 General] dorianmuthig:
Well, good luck with that, you're gonna have to restart your phone sooner or later, either because one day your battery runs out or because you're installing a software update. Get a compatible card, it'll make you a lot happier. Chances are, you can return that card you bought as malfunctioning and get a replacement.
[HD7 General] Mr4eyes86:
Could someone provide me with a link(preferably amazon) to a torx screwdriver size 0.4. I went to my local radioshack to find out they don't offer a screwdriver that small. They said my best bet would be to look online. Thanks!
[HD7 General] dorianmuthig:
Standard Torx T5 screwdriver on Amazon: http://www.amazon.com/dp/9861112855/
[HD7 General] Cadetto Entusiasta:
Hello. I did just now switching microsd sull'HD7. But I have problems: with the format of the device, sometimes and sometimes not, I detect the phone with 28 GB of memory and more and then I install its applications; at other times I detect 28MB and I do not install anything. This problem could be derived from what? Solutions?

I removed the microSD, which is normal with any player, the PC can not read it? no one ...
[HD7 General] dorianmuthig:
You might have got a bad or incompatible card, that your phone has trouble reading.

Windows Phones lock your card with a random device password using the secure digital pass-key feature. To use your card in a PC card reader, you need to format the card and disable the pass-key on it. You can do this with any Symbian based mobile phone, like those from Nokia. If you don't have one, try asking in a mobile phone store, if you can use one of the display models to format your card.
[HD7 General] rille31:
hi guys

I have a 32G microSd card from sanDisk and Im thinking about trying this on my hd7, it says its a class 2card

did the test and got the following result

-----------------------------------------------------------------------

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World :

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 18.926 MB/s

Sequential Write : 5.721 MB/s

Random Read 512KB : 18.210 MB/s

Random Write 512KB : 0.454 MB/s

Random Read 4KB (QD=1) : 2.007 MB/s [490.0 IOPS]

Random Write 4KB (QD=1) : 0.984 MB/s [240.1 IOPS]

Random Read 4KB (QD=32) : 2.031 MB/s [495.8 IOPS]

Random Write 4KB (QD=32) : 1.071 MB/s [261.4 IOPS]

Test : 4000 MB [G: 13.1% (3.9/29.7 GB)] (x1)

Date : 2011/07/10 14:17:10

OS : Windows 7 Home Premium Edition [6.1 Build 7600] (x64)

should I try to change the card?
[HD7 General] dorianmuthig:
Well, this card is fine, but I had a few cards that tested just fine lately, that didn't work very well with Windows Phone (they were Class 4, -B35 units). Try it, if you get extremely poor performance on your phone (much worse than the card that it already came with) after resetting it, the phone moans about the storage card not working or doesn't even use it (~20MB of free storage instead of ~27-29GB), return it and have it replaced with a new one.
[HD7 General] rille31:
Got no idea wich model this is as I didnt get the original package

gonna give it a try as soon as I find a good screwdriver
[HD7 General] Discogio:
Sandisk SDSDQM-0[B][COLOR="Red"]16[/COLOR][/B]G-B35 (Class 2 or Class 4) doesnt work

Hi guys, I tested yesterday - Sandisk SDSDQM-016G-B35 (Class 2/4) which should be same like often used Sandisk SDSDQM-032G-B35 (Class 2 or Class 4) but on my HTC HD7 this 16GB variant doesnt work :( then avoid this number....
[HD7 General] dorianmuthig:
The cards aren't the same, just like the class 2 cards and class 4 cards aren't the same, there are about 6 variants of each class and capacity version. Some of them being OEM versions, retail versions, and versions without card class header (SDA storage device parameter).

HTC uses SanDisk OEM class 4 cards without the card class header which are manufactured the same way as the -J35(A) versions sold in Japan, Korea, China, Hong Kong and Taiwan (Asia/Pacific region).

The -B35(A/N) and E11(M) cards are made for and sold in the Europe region whilst the A11(M/N) are made for the Americas region (USA, Canada, Mexico, Puerto Rico, Brazil, etc.)

Some of those cards use the same manufacturing process, some don't. Through testing I found that most -B35(A) class 2 cards are the same as the -J35(A) class 4 cards HTC use themselves, with only the SDA storage device parameters being different.

If you got a bad card and it doesn't work, send it back and demand one that works.
[HD7 General] VizagDude:
Why do you even have to make this post? It's not providing any input to this thread, or asking any question, or providing any answer... Please do not post stuff that is totally irrelevant. No one asked you if you are willing to upgrade your card, so I'm not sure why you had the compulsion to to the above post.

Stuff like this would start a side conversation and would miss the important posts of folks, that might need real help that is relevant to this thread topic.
[HD7 General] anyjah:
fyi... i found the sandisk today at a verizon store for those who are looking...
[HD7 General] anyjah:
Is there supposed to be some kind of pause on the white screen while pressing the down volume button?

i'm trying to see if i did anything wrong... my 32gb card is not being picked up by the system... it's not seeing it and just giving me 12.28mb of storage....
[HD7 General] nrfitchett4:
might need to pop the card out and back in.

What brand and class of card did you get? Are you sure it's a legit card?

Slightly considering doing this, just not sure if its worth it, if afterwards it takes 1-2 minutes to boot vs <30 seconds.
[HD7 General] anyjah:
sandisk 32gb class 2 - purchased from verizon store in atlanta...

I've tried a 8gb centon class 10 card, it worked....

i don't see the problem with the boot unless you're shutting off the phone constantly... i use airplane mode if i want to ignore calls.
[HD7 General] anyjah:
arrrgh!!! need to reformat the card and no nokia in sight.... anyone know any different ways to reformat a software locked sd card?
[HD7 General] Oberoth:
But then there is the problem with the metalic sticker...

You simply cannot remove it and do it over the new sd-card that it looks like original...

so this voids your waranty too
[HD7 General] alexhope21:
HTC Surround

Could I do the same thing with my HTC Surround?

As in can i use a SanDisk 32gb Class 2 card? Or would it be a different card for my HTC Surround?

Thanks.
[HD7 General] jfarhat:
If you are worried about voiding your warranty by removing the "VOID" sticker, you can do the following:

remove the VOID sticker, very gently and slowly, with something like the head of a needle. Just slip in under the sticker and slowly move it towards the pit of the screw head and then slowly pull up. Usually, the entire sticker will just start to come off at this point. These stickers are not tightly attached to the screw head, and can be removed without any sign of damage to the sticker if done in a slow and gentle manner.

Also, be gentle on the screws themselves as they will scratch the black paint on them if you turn the screw driver and grined the head of the screw against the tip of the screw driver. But that can easly be fix with a dab of black model paint.

I would recommand that you not put back the VOID sticker after you remove it (until or if you need to send it back for warranty issues). You may need to gain access back into your phone and by having it out, you don't have to worry about damaging it during another attempt to remove it. Just stick it to somthing like sticker paper (even the paper your postage stamps come on will work), that way if you need it in the future, you can just take it off the sticker paper and put it back in place.
[HD7 General] Vampir1c:
lmao, this is crazy, I always thought the memory is soldered onboard or something for devices with large memory capacities.
[HD7 General] jfarhat:
Why re-invent the wheel....what is stupid is that they now don't give you access to the card as on previous devices (iPhone envy I guess - stupid if you ask me....if I wanted an iPhone, I would have bought an iPhone).
[HD7 General] mans550:
Mozart

I have HD7 with 16GB which i think is adequate for me.

But i also bought a Mozart with on 8GB..

I wish i knew how to upgrade the Mozart 32GB..

It would be the perfect device with the 8MP camera,

i would sell my iPod if i knew how
[HD7 General] BlueAnt1958:
Look here

This has already been done for the Mozzie. Read this:

http://xdaforums.com/showthread.php?t=831579

Again this will also void your warranty.
[HD7 General] mendez77054:
speed?

is the speed of the system the same? or slower? how can we tell any benchmarks?
[HD7 General] akshay2000:
Its not like that, is it? Once you damage the void sticker, warranty goes away. Nothing to do with original SD card then!
[HD7 General] antoniomistretta:
http://pocketnow.com/windows-phone/how-to-upgrade-memory-on-htc-hd7-to-32gb
[HD7 General] bliblablub:
Any source where to buy the VOID stickers and screws? xD
[HD7 General] Z80-Man:
Of course not ! The HD7 is nothing else but an HD2 missing a button and with a hidden but ordinary memory card slot.

This had been known from the beginning. This tutorial explains perfectly how to do it, thanks to Wolfman017... But it has been told so many times that everybody on the Earth should have know the fact ! :D

Better keep your HD2 and flash WP7... Provided you like an OS unable to do anything of course, but, well, for the fun...

If you ever run out of your 16 GB space, it will be quite late, as swapping will of course leave your data on the memory card that has been removed... Plus it requires a hard reset, so anything present on the new card will be wiped out.

So do it now, before putting anything on it... Or never do it.

Or find a way to efficiently backup your data, and patiently reinstall all you had on your phone.

Furtunately, I happen to precisely have a 32 GB Sandisk Class 2 memory card in my HD now... :cool: I know it will always be useful, starting by using it on a potential HD2, with or without WP7. :cool:
[HD7 General] *Igel*:
Does a 16gb Class 4 Kingston Card works now or not?

My HD7 will have 8gb and i will upgrade and be faster..

Thanks for answers
[HD7 General] Mysterious Stranger:
eBay. Sheet of 500 stickers for $10usd or something.....

M.S
[HD7 General] Discogio:
Unfortunately this is not possible. Card works in other devices (camera) then there is no any reason from seller to change it :/.
[HD7 General] dorianmuthig:
Tell your seller, that this may be valid for normal (full size) SD cards which are made for cameras, but not for microSD cards, which are made for mobile phones. If the card doesn't work in your phone it's broken. If your seller still refuses to replace it, contact SanDisk support for your warranty replacement.
[HD7 General] matthew4444:
So should I doe this or not?
[HD7 General] rille31:
installed a sandisk class2 32mg memory card and I cant notice any difference but its only been a day
[HD7 General] SWatTX88:
Will the Sandisk SDSDQM-032G-B35N work for the HTC HD7S?
[HD7 General] dorianmuthig:
If your card was manufactured after March 2011, it should work just fine, no matter which one it is. Buy it somewhere where you can have it replaced, if it doesn't work, like Amazon.
[HD7 General] enyaj:
I'm not sure if theres a difference between an HD7 and HD7s in terms of handling MicroSD cards(I think theres none), and also when it was manufactured, but thats the Model ID I tried and it was laggy.
[HD7 General] nicodekker:
I think bot suitable ;)

I think not suitable should be the title!

I've got a 16GB original Sandisk micro SD card that's about 2 years old. It states class 2.

I've benchmarked it and compared it with the original 8GB Sandisk from my HD7. Here are the results.

[B]Sandisk 16GB (About 2 years old)[/B]
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : [URL]http://crystalmark.info/[/URL]
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 16.998 MB/s
Sequential Write : 7.439 MB/s
Random Read 512KB : 16.547 MB/s
Random Write 512KB : 0.840 MB/s
Random Read 4KB (QD=1) : 2.504 MB/s [ 611.3 IOPS]
Random Write 4KB (QD=1) : 0.008 MB/s [ 1.8 IOPS]
Random Read 4KB (QD=32) : 2.669 MB/s [ 651.7 IOPS]
Random Write 4KB (QD=32) : 0.008 MB/s [ 1.9 IOPS]
Test : 4000 MB [M: 0.0% (0.0/14.8 GB)] (x1)
Date : 2011/07/19 19:08:07
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

[B]Original Sandisk 8GB HTC HD7[/B]
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : [URL]http://crystalmark.info/[/URL]
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 13.307 MB/s
Sequential Write : 5.644 MB/s
Random Read 512KB : 12.417 MB/s
Random Write 512KB : 1.581 MB/s
Random Read 4KB (QD=1) : 1.100 MB/s [ 268.6 IOPS]
Random Write 4KB (QD=1) : 0.176 MB/s [ 42.9 IOPS]
Random Read 4KB (QD=32) : 1.047 MB/s [ 255.7 IOPS]
Random Write 4KB (QD=32) : 0.028 MB/s [ 6.7 IOPS]
Test : 4000 MB [M: 0.0% (0.0/7569.5 MB)] (x1)
Date : 2011/07/19 20:05:49
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

The sequential read and write figures looks ok I think. From the Random Write figures I think this 16 GB Sandissk card is not suitable for Windows Phone 7. Is this right or should I give it a try in a WP7 device?

Advice welcome.