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In addition to the Galaxy Note 3 flagship, which is expected to launch in the coming months in various markets, Samsung may already be working on new smartphone models with display sizes ranging from 4 to 5.2 inches.

Sam Mobile has tracked such unknown devices using a logistics website which has revealed details about alleged Galaxy Note 3 versions and the Galaxy Gear smartwatch in the recent past.

These devices are the SM-G730A (4-inch display), SM-G3815 (4.5-inch display), SM-G9105 (5-inch display) and SM-G7102 (5.2-inch display). Actual commercial names for these devices aren’t available at this time.

The first two models have also been spotted in user agent profiles on Samsung’s website, revealing their screen resolutions: 800 x 480 for the SM-G730A and 960 x 540 for the SM-G3815.

However, we have no details on what these smartphones are or when we’ll see them in stores – the Zauba website does mention that these are all mobile phones (and are all for “testing & evaluation & not for retail sale).

For what it’s worth, all these devices have apparently been shipped to South Korea for testing during August 12-17, of course, assuming the information is accurate, with some of them spotted in the system even earlier.

In fact, upon checking the Zauba listing (see Source link below), you’ll also notice a model number for a 4.3-inch mobile phone, the SM-G350.

That said, we surely expect Samsung to launch more smartphones in the future. After all, you don’t get to sell the most smartphones in the world without making a Galaxy phone for every taste, which is what Samsung’s policy has been for the past few years. Of course, in addition to Android, Samsung also sells Windows Phone smartphones and has some Tizen plans of its own, so it’ll be interesting to see whether these unnamed devices will all run Android or not.