The Nokia Lumia 520 packs 1.0 GHz dual-core process while having a 4.0-inch display with IPS technology. The pixel resolution of the phone is 800*480. Moreover, the Lumia 520 has 8 GB of internal storage with 512 MB of RAM. A microSD card slot is also featured for up to 64 GB of additional space. The rear facing camera of the phone has 5.0-megapixels, but no front-facing camera is equipped.
As to the Nokia Lumia 720, this handset comes up with a 4.3-inch WVGA display with ClearBlack technology. Pixel resolution of the phone is the same as Lumia 520. It’s reported that the display of the Lumia 720 is very sensitive and compatible while wearing gloves. Same as Lumia 520, the Lumia 720 also has 8 GB of internal storage and 512 MB of RAM. A microSD card slot is available with the smartphone for up to 64 GB of additional support. Besides displays, here’s another difference between 2 phones: the Lumia 720’s rear-facing camera has 6.7-megapixels with Carl Zeiss optics.
The Lumia 720 is "designed for non-LTE markets" because it lacks LTE. Currently it’s unclear whether this gadget would be sold in the U.S. Meanwhile the Lumia 520 is reported to hit the U.S market via T-Mobile.
Thanks to the Windows Phone 8 OS, both handsets are able to play PowerPoint presentations with their build-in mobile Office app. However, the mobile Office is not as functional or convenient as the computer one. For instance, the presentation’s background music can’t be heard on mobile Office, and animation effects are unavailable neither. To play PowerPoint on Lumia 520 and Lumia 720, users have another solution by converting PowerPoint to video format with animation and music remained.
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