WP7 vs. iOS4: Multitasking, Copy & Paste, Suspend

If you’re looking for app switching in the manner supported by iOS 4.0, Windows Phone will disappoint. There’s no Apple-like multitasking supported by the OS at launch. Windows Phone 7 doesn’t totally regress in this regard. This is where the back button comes in.

The back button in Android literally takes you back screens until you land at your home screen, at which point it stops functioning. In Windows Phone, the back button is more like the back button in a web browser - it takes you back, in order, through every app/window you’ve visited.

Let’s say you’re typing a text message and you want to double check something you received in an email. There’s no conventional multitasking support so while you’re in the messaging app you’ll hit the Start button, and tap the email tile to find the message you were looking for. Now to get back to your text message, in a conventional smartphone OS without multitasking you’d hit the home/start button, and launch the messaging app again. That’s how it used to work in iOS. In Windows Phone however, hitting the back button will take you out of the email app and back to the last app you were in. In this case, that would be the messaging app.

There are rules for how the back button works. First, never use it after midnight. The history removes almost all references back to the Start screen with the exception of the most recent one. For example, if this is the path you took:

Messaging -> Start -> Email -> Start -> IE -> Start -> Zune

Continuously hitting the back button would take you to those screens in this order:

Zune -> Start -> IE -> Email -> Messaging

You always get the most recent Start screen in your history in case you, literally want to go back to the screen you were just at. Everything else however assumes that you’ll just hit the Start button if you want to go home and you’ll just traverse through apps you’ve visited.

The history doesn’t grow by using the back button. For example, if you launch the messaging app, hit back and then launch your email, hitting the back button will only get you back to the Start screen.

It sounds like a complex series of rules but honestly it just works for the most part. The back button really shines when you launch an app from within another app. Then there’s no going back to the Start screen, you just switch between the app you’re currently at and the one you were at prior to it. It’s like a one-tap task switcher.

The back button doesn’t completely negate the need for iOS style multitasking, but it gets you around 90% of the way there. Copy & paste is the other glaring omission, but Microsoft has already committed to deliver clipboard functionality in early 2011. We’ve privately seen a demo of the feature working, Microsoft is still ironing out the best way to make it happen within the Metro UI.

Windows Phone does support suspend/resume of apps. When you switch away from an app and later return back to it, the app will pick up where you left off - similar to what iOS4 enabled. All that’s really missing is the ability for 3rd party developers to have portions of their code run in the background and some sort of task switching mechanism.

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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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