Expandable Storage via microSD

Microsoft supports expandable storage on Windows Phone 7 devices. If an OEM chooses to do so, it can implement a microSD card slot for additional storage. This is similar to what Google allows with Android, however the similarity ends here.

Windows Phone creates a JBOD span across your internal NAND and any NAND on microSD. It’s all treated as one contiguous address space, like a large hard drive or SSD. The benefit is you don’t have to manage where you put your apps, music, movies or photos. The downside is you can’t just remove/replace the microSD card in your phone.

The OS is obviously stored in a known location, however data is written linearly across both internal and microSD NAND. Your phone will still boot if you remove or swap out the microSD card, but you’ll be greeted with an error.

If you remove the card and attempt to read off of it on your Mac/PC you’ll quickly realize that you can’t. By removing the card you effectively break the file system. Microsoft provides you with a couple of other options to get data to/from the phone (which I’ll get to later) so you don’t have to rely on swapping microSDs.

You aren’t stuck with that original microSD card however. If you do a factory restore with a new microSD card installed the OS will format across it and you’ll be good to go. Obviously you’ll have to re-download all of your apps and sync all of your files but it does work.

WP7 vs. iOS4: Multitasking, Copy & Paste, Suspend Syncing over USB and WiFi
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  • Crono - Thursday, October 21, 2010 - link

    A lot may not have been taken from the Kin One and Kin Two, but the square, multi page Start is the same concept that was implemented in the Kin phones.

    Looking forward to moving from my Kin One to the Surround. Microsoft is offering 3 months free Zune Pass for those who sign up to be notified about preorders.
  • heelo - Thursday, October 21, 2010 - link

    You might be the only owner of a Surround.

    That thing has a "value proposition" that I'm really struggling to relate to.
  • peter7921 - Thursday, October 21, 2010 - link

    I have to give recognition to Anandtech for another great review. I have been looking for a detailed review on WP7 and you guys delivered. Not only is it extremely informative but it's also very well written. I read through it all, not once feeling bored or skipping ahead.

    These types of articles are the reason Anandtech is my first source for all things tech!

    Keep up the great work guys!
  • Confusador - Thursday, October 21, 2010 - link

    OK, wow. I mean, even by Anandtech's unusually high standards that was intense. Just one thing I'm not clear on, though... am I reading this correctly?

    "WP7 calls presents its browser user agent as “Mozilla/4.0 ...""

    If that's correct we've come a long way from the days I had to have Firefox masquerade as IE to be effective.
  • Guspaz - Thursday, October 21, 2010 - link

    IE has *always* done this, including on the desktop. IE6 reports as as Mozilla/4.0 too. IE2 also did it (a different version of Mozilla, though). A quick search didn't turn up IE1 user agent strings, but I assume it also did.
  • Spivonious - Thursday, October 21, 2010 - link

    Remember back when IE was introduced, Netscape was king. Netscape is based on Mozilla. That's the only reason it's in there - so pages made for Netscape would load correctly in IE.
  • arturnowp - Thursday, October 21, 2010 - link

    IT seems strange that WP7 cannot pass test, has very slow JavaScript engine but still pages are fluid and displayed porperly. Maybe Microsoft renders pages remotely and serves them to the phne?
  • UCLAPat - Thursday, October 21, 2010 - link

    Wow! After reading this review, it makes all the other reviews look like previews. Definitely going to be considering WP7 when it's time to upgrade my phone. Still have time to burn on my current 2 year contract. By the time it's up, LTE should be up and running and Verizon will probably have a WP7 device for us to consider as well.
    Apps will come. But they're not a huge part of my life anyway. I want a rock-solid core experience for a phone. A smartphone has to nail the basic experiences first (calls, messaging, calendar, etc). I never liked the main screen completely filled with app icons. That reminded me too much of my old desktop computer before I cleaned up the desktop.
  • Belard - Thursday, October 21, 2010 - link

    But very detailed... tells us pretty much everything anyone can ask.

    Thanks...

    While I'm not exactly PRO-MS... its good to see good design.
    I still like Google's a bit more and its shortcoming are easy to spot. Hopefully Android 3.0 will improve on its weaknesses.

    The icon / naming is well thought out and is used by others... including Apple, but not on a phone.
  • silverblue - Thursday, October 21, 2010 - link

    "...displays up to 8 tiles of people you’ve either recently communicated with or whose profiles you’ve viewed/stalked."

    LOL.

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