After the successful run of oneplus 3, company is going to launch Oneplus 3 Mini in coming future as it is listed in GFXBench listings. Earlier yesterday Oneplus has announced that they are going to halt the sales of Oneplus 3 in 24 Countries.
Coming back to Oneplus 3 Mini, according to the listings on GFXBench it features a 4.6-inch screen with a 1080 x 1920 resolution, it is powered with Snapdragon 820 64-bit quad-core SoC with Adreno 530 GPU. It is paired with 6 GB of RAM and 64GB of internal storage. It is packed with 16 MP primary camera and 8MP of front camera and the phone runs on the Android 6.0.1 Marshmallow.
As far as specs are concerned Oneplus 3 Mini is very identical to Oneplus 3. But as the name suggests that it may be cheaper than the main Oneplus 3.