Review: Nokia Lumia 900 for AT&T
Internet Explorer for Windows Phone is a decent browser, though I find it's not quite up to par with the browsers offered by Android and iOS. Even so, it pulls down web sites lickety-split over AT&T's HSPA+ and LTE networks. It renders HTML sites well, though I don't care for the font used by the browser. You can set it to prefer mobile-optimized sites, but you're better off just letting it tackle the full HTML sites.
The address bar is at the bottom of the screen instead of the top. I still can't get used to this, but I am sure it doesn't bother most people. The browser doesn't offer forward or back buttons; only stop or refresh. You have to press the three dots to the right of the address bar to access the full settings/tools. Web pages can be pinned to the start screen or easily shared via social networks.
Speed freaks need not worry, it's fast no matter what network — Wi-Fi, HSPA+, LTE — you connect it to.
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In order to really customize Windows Phone, you have to be creative. The base items that can be altered include the lock screen wallpaper, the color of the home screen tiles, and the color of the background. The home screen tiles can be set to just a handful of simple colors, such as red, blue, green, purple, magenta, etc. The background can be set to either white or black. Other than that, you can only mix up the live tiles and hubs that are pinned to the home screen and set custom ringtones. As noted earlier, there is only one home screen with Windows Phone, and there are no widgets.