Nokia apparently plans to go bigger this year in terms of display size and a 5.2-inch Lumia 825 is reportedly in the works.

Several rumors so far suggested that Nokia would launch larger handsets by the end of the year. This move would also be favored as Microsoft is expected to release its GDR3 update to Windows Phone 8, which will add support for more powerful quad-core processors and Full HD (1080p) displays for the first time.

Nokia's upcoming Lumia 825 will not sport a Full HD display, as its resolution will reportedly stick with 720p HD. The device will, however, sport a bigger 5.2-inch display and will launch as a mid-range handset rather than a flagship. The lack of a Full HD display may help Nokia keep costs down, as mid-range smartphones target more budget-conscious consumers.

The news comes from Chinese site Dospy, which claims that the Nokia Lumia 825 will come with a quad-core processor.  The CPU will not be the highest-end either, but the Qualcomm Snapdragon 400 based on ARM's Cortex-A7 architecture and likely clocked at 1.2GHz.

With these specs in mind, it seems that the Nokia Lumia 825 may be targeting emerging markets mainly. If this proves to be the case, the smartphone will likely sport dual-SIM support as well.

Nokia is rumored to launch such a budget smartphone in October and this Nokia 825 may just as well be it. Considering that this handset will allegedly sport a quad-core processor, however, this means that Microsoft needs to finalize the GDR3 update by then. Otherwise, the purported Lumia 825 will likely get delayed or settle for a dual-core processor.

Keep in mind, however, that Nokia has yet to announce this purported Lumia 825 smartphone, which means it's all in the rumor state for now. A mid-range Windows Phone smartphone with a quad-core processor would certainly be good news, but don't get your hopes up until it becomes official.

Nokia is also expected to launch a high-end Nokia Lumia phablet running Windows 8.1, but nothing is certain in this area either. It would make sense, however, for the company to step things up and move to bigger displays, higher resolutions and more powerful processors, as it needs to keep up with its iOS and Android rivals.