yashsingh1/xdaforums huggingface dataset:
[HD7 General] dorianmuthig:
Replacing the SD card for more storage (up to 32GB)

You can safely replace the internal microSD card in the phone to increase storage space and maybe even performance.

WARNING: This will void your warranty with HTC and/or your carrier.

View this image: http://img227.imageshack.us/img227/5467/1230101402pub.jpg

What you need:

One or two plastic opening tools, you can use these: http://www.ifixit.com/Tools/Plastic-Opening-Tools/IF145-000

A T5 Torx screwdriver

One of the following microSD cards:

Sandisk Class 4 8GB microSD - SDSDQ-008G-J35A (used in 8GB version)

Sandisk Class 4 16GB microSD - SDSDQ-016G-J35A (used in 16GB version, tested)

Sandisk Class 2 32GB microSD - SDSDQM-032G-B35 (tested)

Sandisk Class 4 32GB microSD - SDSDQ-032G-J35A (not tested and only available in Asian markets)

Now, let's start.

First you need to disconnect all cables and turn off your phone by pressing and holding the power button. Now remove the top back cover, the battery and your SIM card.

The red dots on the bottom back panel with the metal strip indicate two hinges which face towards the bottom of the phone. You need to use the plastic opening tools in the green marked areas in the image linked above and thrust the bottom cover towards the battery area to remove it without damaging it. Now if that's done, get your screwdriver ready and unscrew all the screws marked with the yellow/green circles. One of them has a tiny warranty sticker on it.

If you removed all the screws and put them in a safe place, lift up the cover, you can do that using the kickstand, don't worry, even though you removed two screws there, it's not loose.

Now, if you've done that, peel off the gray cloth tape strip covering the microSD card slot and push the SD card a little into the slot to remove it using the spring load.

Now insert your new SD card, reassemble the phone, hold down both volume buttons and power it on, keep the volume buttons pressed until you see blue text on gray background, then release both volume buttons and press volume down to reset your phone to factory settings.

Enjoy your capacity upgrade.

If you would like to be able to use your old SD card in another phone or your computer, you will need to format it using a device with secure digital password protection support. You don't need to know the password for that. Most Symbian devices can do this, if you don't have one, try to ask the nice person in your local mobile phone store to lend you one for one or two minutes.

Now for some performance statistics:

As you can see, the 32GB Class 2 card is actually faster than the one that came with the device.
[HD7 General] Dun3rider:
Appreciate it thanks, I am still new to this phone and i was wondering if you knew and other mods or hacks for the HD7 that you though were good?
[HD7 General] Program.X:
effect on unlocked phone?

Thanks for the time spent on investigating and documenting this. Obviously, as you say, a hard reset is required for the phone. Having unlocked my HD7 from Manx Telecom, will this re-lock my phone?
[HD7 General] Wolfman017:
No. Once a phone is unlocked, it is for life.
[HD7 General] Program.X:
Thanks for that. I forgot to ask, also ... what about my having a dev-unlocked phone? Will it retain its status, require reunlocking or require re-unlocking using one of my permitted 3 devices for my app account?

Seems like I might just have a "stab" at this.
[HD7 General] Wolfman017:
For that point, I don't know. It will be like if you make a hard reset of your phone. So if this hard reset does not "kill" one of your permission, it should do the trick.
[HD7 General] ricklo19:
Good to know

Ok, so I am wondering. No other 32gb card other than the a Sandisk Class 2 works only right? Since it's class 2. Is it still able to capture the 720p good? You know stuff like that. I just want to know if it will effect any high speed data transferring. Please help?
[HD7 General] Wolfman017:
As I know, this is the only compatible card. Maybe someone will find other compatible models, but for now this is the only alternative.

Concerning performance, I did not notice any loss.
[HD7 General] alesscam:
another same thread already exist(Sticky)

http://xdaforums.com/showpost.php?p=10012169&postcount=1

use search button before posting....

Best regards ;)
[HD7 General] dorianmuthig:
Now, to be fair, I have looked and not seen that thread, but it's not the same as it does neither list the model numbers of SD cards HTC themselves use for those devices that ship from the factory or other definitely working ones and their performance.

Also as you can see here, he broke or overbent the hooks in the bottom back cover.
[HD7 General] dorianmuthig:
Someone just made me aware of this thread which somehow escaped me. Now all those fancy pictures may be fun and all, but you're missing some very important details.

You should have a look at this: http://xdaforums.com/showpost.php?p=10354934&postcount=1
[HD7 General] alesscam:
Yes mate

But you can added this info in the old thread and contact OP

For added in first Post ;)
[HD7 General] KingP1n:
can you post a video on how you took the back bottom cover off? i have those tools but i really dont want to break the hooks...and thanks for the new instructions..the other instructions had you break off the hooks which is why im waiting for better instructions!
[HD7 General] KingP1n:
dorianmuthig

when you get a chance, pls create a video on how you removed the bottom back cover without breaking anything! Thanks
[HD7 General] alesscam:
i have changed my Sd with Wolfman017 tutorial and i haven't break off any hook
[HD7 General] dorianmuthig:
I can't make you a video, because I don't have a camera, but basically you first pry it up on the left and right, there are special gaps there. Then you pry above the headphone jack and push it upwards and then it's loose.

When you put it back on, you put it on there a bit above its actual position and push down on the areas left and right of metal strip first. When you push down the cover at the bottom it'll snap into place.
[HD7 General] dorianmuthig:
You must at least have overbent them.

And I can't make a video, I don't have a video camera.
[HD7 General] KingP1n:
So, based on the videos on you tube and the other instructions on this website; you 1st should pry open from the sides and not going straight down like the other instructions correct? Thanks just don't want to break it.
[HD7 General] dorianmuthig:
If you see a reboot, chances are it's your battery, especially if you are in low reception areas.

As for performance tests, see post #43 in this thread (16GB HTC phone original card & 32GB Class 2 B35 compatible card).

I also have an original 8GB card from a Windows Phone. Let me find and test that real quick...

Benchmark below:

Please be aware that write speeds aren't as important as read speeds, nor has it any effect if the QD=32 (queue depth with 32 operations at once) performance is a lot slower than the QD=1 4K IOPS, because such effects may be attributed to the card reader or the operating system used. The Microsoft performance specification does no specify a queue depth, so you have to assume there is no command queueing support (QD=1).

All it says is at least 20 write IOPS (4KB), used to be 50, ideally 100, at least 200 read IOPS (4KB), used to be 500, at least 256KB/s 64KB random write and 512KB/s 64KB random read and optionally 2MB/s sequential write for picture taking and video recording. And that is the bare minimum after they lowered the specs with Mango. Usually though, most cards are a lot faster than that. There should be virtually no newer cards left that wouldn't work, except for the 8KB sector cards.

Here's a fun video, that contains information on the matter (attention: technical stuff): http://dev9.channel9.msdn.com/Events/MIX/MIX11/DVC19
[HD7 General] 5ft24:
Bought a new card today, B35, didn't want to wait for SanDisk... still going to RMA the other...

Benched it first:

MUCH better than all the rest!

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

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : http://crystalmark.info/

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

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

Sequential Read : 20.092 MB/s

Sequential Write : 6.074 MB/s

Random Read 512KB : 19.421 MB/s

Random Write 512KB : 0.725 MB/s

Random Read 4KB (QD=1) : 2.999 MB/s [ 732.1 IOPS]

Random Write 4KB (QD=1) : 1.402 MB/s [ 342.3 IOPS]

Random Read 4KB (QD=32) : 2.762 MB/s [ 674.2 IOPS]

Random Write 4KB (QD=32) : 0.909 MB/s [ 222.0 IOPS]

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

Date : 2011/11/12 14:57:28

OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)
[HD7 General] Heofz:
Very nice, which card was this exactly?
[HD7 General] 5ft24:
This was another SanDisk SDSDQM-032G-B35... same exact part as the 1st 32G card I had that failed miserably.
[HD7 General] dorianmuthig:
This card may not work with HTC Windows Phones, because of sector size, block size or alignment. The 512KB random writes should be the same as the sequential writes. Your results may however be influenced by formatting or the reader device used. If the card works, it would be more than fast enough.
[HD7 General] 5ft24:
This thing may be the reader throwing a curve ball in, as it's an OLD adapter...

But it's working like a champ in the phone, response seems a bit snappier than the 16G card that was in there, and no freezing etc... Vids play nice and smooth, music is good, no issues seen... Have about 18G of pics, music and vids on here.
[HD7 General] mrzly:
I have a little problem installing the card back.

When I pull the card out, first I have to push it in so that it clicks.

But when I put in it doesn't clicks at all. And that's probably why my phone reseted itself about 15 times last 2 month.....:confused:

How do I push it back so that it clicks?
[HD7 General] 5ft24:
just use a pair of tweezers and push... you may not hear the click, but the card will stay all the way in the holder... if you push it again, it will stick out part way.
[HD7 General] ak47kalam:
Hi, I'm really kind of confused which card to use, because Amazon keeps giving me related cards (which might not work). So can anyone give me a link to a UK site that sells the right card, please? :p
[HD7 General] 5ft24:
you just need to contact the store with the card and verify it is one of the part numbers listed in the first post...

and make sure they have a good return policy, as it seems the cards have a wide range on the actual timing specs and you may get one that works, you may not...

Benchmark it before you tear the phone apart to install it though to make sure it's good first.
[HD7 General] dorianmuthig:
There are no guaranteed working card types anymore. You need a card that has been recently manufactured and everything should be fine. If you don't know which card to get, buy one with a good return policy and try it out or ask the seller how old their shipment is.
[HD7 General] Cadetto Entusiasta:
Of course you do not have an E7 or N8, as you told me to use, and I know someone who has ...

The Nokia 5800 is equivalent?

Because I tried a Nokia C3 but it not possible unlock the microsd for the format: said "Information is not available"
[HD7 General] epedrocost:
Sandisk only?

Anyone tried any other brand of cards?
[HD7 General] dorianmuthig:
Well, the E7 and the N8 are what they're running ads for, so you would assume they'd have those, but the C3-xx, C5-xx, C6-xx, C7-xx, N95, X6-xx, E6, T7, X7 or any phone from that list should also work: http://en.wikipedia.org/wiki/S60_(software_platform)#S60_versions_and_supported_devices

Yes, but apart from Samsung cards there is no way to tell what fab they're from, and most do not work in HTC phones because of SPL limitations.

SanDisk cards are the only ones that are sold under the brand of the manufacturer and available in retail anyway. They're usually also the cheapest, so I don't really understand your concern...
[HD7 General] 5ft24:
as to the device list that has been posted elsewhere on here for devices that will resurrect one of our HD7 used SDHC cards, scratch the Kodak Z1485 camera off the list... I have one and all it does is give an error that there is a defective memory card, and when you go to format it, it says there is no memory card...
[HD7 General] dorianmuthig:
That was a list of Symbian S60 devices on Wikipedia, most photo taking cameras don't support secure digital protection, I have no idea where you got that from...
[HD7 General] 5ft24:
found it in this thread:

http://xdaforums.com/showthread.php?t=1242071&page=3
[HD7 General] Cadetto Entusiasta:
is not possible using this program, DEV_STORAGELOCK.cab , installation in a HD2 and recover a sdcard?? the HD7 actually now I'm going to sell, but regain the sdcard locked
[HD7 General] boysie:
If you have a rom installed on your phone that allows for cab sender to work then yes its possible to unlock your SD card with a HD 7.

I expect it works for all windows phones as long as the cab sender works but I dont have any others to check.

Boysie:D
[HD7 General] Heofz:
I just went and bought a B35 from play.com... will try it in the phone

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

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : http://crystalmark.info/

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

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

Sequential Read : 20.159 MB/s

Sequential Write : 4.616 MB/s

Random Read 512KB : 19.296 MB/s

Random Write 512KB : 0.543 MB/s

Random Read 4KB (QD=1) : 2.480 MB/s [ 605.5 IOPS]

Random Write 4KB (QD=1) : 0.414 MB/s [ 101.0 IOPS]

Random Read 4KB (QD=32) : 2.330 MB/s [ 568.9 IOPS]

Random Write 4KB (QD=32) : 1.355 MB/s [ 330.8 IOPS]

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

Date : 2011/11/20 5:50:42

OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

Interestingly the 5x50MB test shows different:

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

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : http://crystalmark.info/

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

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

Sequential Read : 20.142 MB/s

Sequential Write : 5.586 MB/s

Random Read 512KB : 19.575 MB/s

Random Write 512KB : 1.528 MB/s

Random Read 4KB (QD=1) : 3.236 MB/s [ 790.1 IOPS]

Random Write 4KB (QD=1) : 1.010 MB/s [ 246.5 IOPS]

Random Read 4KB (QD=32) : 3.625 MB/s [ 885.1 IOPS]

Random Write 4KB (QD=32) : 1.173 MB/s [ 286.4 IOPS]

Test : 50 MB [D: 0.3% (0.1/29.7 GB)] (x5)

Date : 2011/11/20 4:47:27

OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

Would you say this card is ok to throw into my Mango HD7 ?
[HD7 General] dorianmuthig:
Your card may not work, try it, if it doesn't return it and have it replaced.

There is a reason why you should use the 4000MB test, it is to make sure you're not testing the cache in your reader, system driver or memory card. Secondly you only need to test one pass.
[HD7 General] JMSSlayer:
I recently purhased the SDSDQM-032G-B35 through Amazon. Given, the recent reports on the thread, and the hit or miss nature with this card, it seems like much more of a miss these days... Hoping some SD cards come out that can be guaranteed as working. I'm not into trial and error...

Here's my B35 result. Reading the thread, it looks like it might be one of the 8K NAND variety.

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

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : crystalmark.info

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

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

Sequential Read : 20.095 MB/s

Sequential Write : 4.588 MB/s

Random Read 512KB : 19.198 MB/s

Random Write 512KB : 0.615 MB/s

Random Read 4KB (QD=1) : 2.271 MB/s [ 554.4 IOPS]

Random Write 4KB (QD=1) : 1.200 MB/s [ 293.0 IOPS]

Random Read 4KB (QD=32) : 2.080 MB/s [ 507.9 IOPS]

Random Write 4KB (QD=32) : 1.244 MB/s [ 303.6 IOPS]

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

Date : 2011/12/11 10:49:09

OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)
[HD7 General] dorianmuthig:
Actually, this one could still work. There has also been an update for the Windows Phone OS that implements caching and an update for the HTC SPL and drivers last week that would improve operability with the 8K NAND cards (which are actually faster than 4K NAND, if adressed correctly in direct I/O).
[HD7 General] boysie:
Do you have any more details on the updates? like numbers etc? Are they being pushed out in roms that rom builds can use?

Is Zune pushing them out?

~Thx in adv.
[HD7 General] dorianmuthig:
They have been pushed over the channel (update via Zune software), one is Update 7.10.7740.16 as listed here which also adds caching in addition to what you can see on the page, the second one is a HTC vendor update which adds a new SPL which includes changes to SD card access (no idea if it improves the 8K cards, yet, if it's SDXC or none of the above and simply something else), Wi-Fi hotspot (internet sharing) drivers, new camera drivers, and an update for the audio processor that improves performance and/or battery life (or at least it's supposed to, who knows what it really does...)
[HD7 General] devnode:
Just wanna ask if this one is good :)

Hi mates,

i've watched this thread for some time and till now im totally not sure about which card i should buy.

I have one on amazon but dont know if i should pick it.. would post the link but its not allowed :(

Lets try this way.. What do you guys think about this card: amazon.de/gp/product/B004G60AD6/ref=ox_sc_act_image_1 ??

Is that one okay or shall i pick a different one? I just know that i have to look for a class4 card.

---------- Post added at 04:46 PM ---------- Previous post was at 04:45 PM ----------

Oh i see.. just a few more post would have made it -.- .. anyway i'll work on that xD
[HD7 General] Burfell:
Once you have backed up the phone, switched the card, rebooted the phone, then how do you restore the data to the new card?
[HD7 General] dorianmuthig:
You don't. You can only restore a device backup to a device of the same make and model and capacity.

You have to start from scratch or wait until they add support for cross-device restore (which I hear is coming next year).
[HD7 General] reeg420:
Anybody confirm if a 32gb class 4 SanDisk #sdsdqm-032g-vz57a work.

More specifically the 32gb sold by Verizon. My buddy got a good deal on a bunch of stuff when verizons website had a glich got 3 cards and 3 car chargers plus 3 extended batterys for $34. Yah crazy cheap buthe ended up giving me some stuff. Was gonna swap out my 16gb cards for general purpose... F it why not.
[HD7 General] dorianmuthig:
Since those are OEM cards, and do not have retail part numbers, you're gonna have to try them. If you make a backup, you can restore it, in case they don't work, reformat them using a Nokia phone and use them for something else.
[HD7 General] reeg420:
The number ending in vz57a isn't a retail part number? Understand vz stands for Verizon though... Yah I'm gonna give it a go. Probably the next time I flash a fresh rom. I'll keep this post updated with my results.
[HD7 General] dorianmuthig:
It's a part number the OEM made up, it's not a SanDisk part number or a type number. If you benchmark the cards using CrystalDiskMark, you can tell if they might be compatible, if they might be, you need to try them to know for sure. Any recently manufactured ones (after June) usually work regardless of the part number as those now only indicate type (SD, microSD, CF, etc.), capacity and the sales region the memory cards were intended for.
[HD7 General] reeg420:
I'm gonna check that program out... Was actually gonna do it tonight but can't find my torx bit screwdriver... I had like 4 of em too.
[HD7 General] mcsc:
I Just bought a new HTC HD7 and I was going to swap out the microsd card for a sanddisk model number Sandisk SDSDQM-032G-B35 class 4. This card worked great in my HTC Surround but I see that in this post they say to use a class 2 and I was just wondering why the class 4 doesn't work in the HTC HD7
[HD7 General] dorianmuthig:
It really depends on how recently it was made. Some of those cards have 8K NAND which causes trouble for the phone, even though, those cards are actually fast enough.
[HD7 General] mcsc:
Does this card work

SanDisk SDSDQM-032G-B35N Flash Memory Card - 32GB, Class 2

I tried this SDSDQM-032G-B35SA flash Memory Card - 32GB, Class 4 and it worked but it was slow to restart and the speed for loading and running was slow as well.
[HD7 General] dorianmuthig:
There is no way to tell, if the card works, judging from the part number alone, as not all cards with the same part number are the same. Test your card using CrystalDiskMark 4000MB, 1 pass, all tests after formatting it using the SD formatter tool from http://www.sdcard.org/ and post the results in this thread.
[HD7 General] mcsc:
When I run this utility what numbers am I looking for and what do they mean. I seen a few post ago some test results but what are the values that I need for a card to work. And do I have to format the card before the test? and if it passes the test will the card preform as good as the 16 gb sanddisk that came with it.

Thanks again
[HD7 General] dorianmuthig:
See this post.
[HD7 General] Prawesome:
I dont have a WP7.So,this is just my view.Nice tut :)
[HD7 General] RobbyRob:
Just used a 32GB ScanDisk Class 4 I bought a while back. Works perfect. Guess it's just the luck of the draw on cards lol.
[HD7 General] KosarzPL:
Hey, I've just upgrade my storage to 32gb. I used SanDisk B35 class 4. At the begin (first 3-4 hours) everything worked fine, but then it started rebooting many times. I tried to hard reset, but everytime when it started from scratch it started with freezing and rebooting. I've noticed, that it is only with GSM connection "on". When I turn it without giving PIN everything is ok, any freezings, but only when connect to cellular - bum!

Have someone any idea what's happening?
[HD7 General] 5ft24:
the card isn't fast enough. with the phone on, the processor is processing more data, so the memory is failing.
[HD7 General] KosarzPL:
Thanks for fast answer :) . Do you think now I have to try to replace it for another B35 32gb, or put something different?
[HD7 General] space*ranger:
Based on all the changes with the cards...is this still a viable option ?

I see another thread where some posts a PNY 32 gig class 10 working...
[HD7 General] 5ft24:
you'll just have to try different cards and return the ones that don't work... the older sandisk 32GB class 2 cards are reported to be the best working...
[HD7 General] dorianmuthig:
Your battery is faulty and can't supply the power needed for the high intensity radio modes used in low reception areas to reach the tower. If you know there is no cell tower within reach you should put your phone in airplane/flight mode to avoid draining the battery too quickly anyway.

The only way to tell if your card is not suited is to test its speed in a computer using one of the popular SSD benchmarking tools like CrystalDiskMark 3 or ATTO Disk Benchmark v2.46 (and newer).

All new SanDisk/Toshiba cards (manufactured after October 2011) should now work, if you have the current HTC SPL and firmware extensions update and the latest version of the Windows Phone OS on your device. To determine if you have a "good" (that is faster than normal) card you need to do a benchmark test in your computer.
[HD7 General] KosarzPL:
Is it a good card?

SanDisk 32gb b35

Sequential Read : 19.713 MB/s

Sequential Write : 5.124 MB/s

Random Read 512KB : 19.119 MB/s

Random Write 512KB : 2.631 MB/s

Random Read 4KB (QD=1) : 2.999 MB/s [ 732.1 IOPS]

Random Write 4KB (QD=1) : 1.242 MB/s [ 303.3 IOPS]

Random Read 4KB (QD=32) : 2.871 MB/s [ 701.0 IOPS]

Random Write 4KB (QD=32) : 1.022 MB/s [ 249.5 IOPS]

Test : 50 MB [I: 0.0% (0.0/29.7 GB)] (x5)

Date : 2012/01/13 0:54:21

OS : Windows 7 SP1 [6.1 Build 7601] (x86)