Shipments for the iPad Mini are ramping up. A new report from Digitimes claims Apple Inc. (NASDAQ:AAPL)’s production of iPad Mini 2 tablets is up to 4 million units.

Apple iPad Mini 2

Apple iPad Mini 2 supply problems

The popular new tablet reached low supply right after Apple Inc. (NASDAQ:AAPL) experienced problems with acquiring enough Retina displays. By comparison, the iPad Air had more preparation time, which meant this gadget did not have the same issues. Since Digitimes does not always have the best track record, there is no way to tell if the iPad Mini really reached the 4 million sale point.

A week or so ago, DisplayMate published a report on tablet picture quality. This study included the iPad Mini with Retina display, Google Nexus 7, and 7-inch Kindle Fire HDX. The most interesting thing about this study is that Apple Inc. (NASDAQ:AAPL)’s tablet ranks in third place. DisplayMate explained:

These new Mini Tablets all have higher than Full High Definition displays that have about 325 PPI Pixels Per Inch. At normal viewing distances a person with 20/20 Vision can’t resolve the individual pixels, so the displays appear to be perfectly sharp. With high resolution and sharpness taken care of (for now), there are many other equally important and even more challenging issues for Mini Tablets displays:

1. Picture quality as good or better than your HDTV (to entice you to watch downloaded content).

2. Excellent true color accuracy and accurate image contrast for high fidelity images of all viewed content.

3. Improved screen performance in high ambient light since Tablets aren’t used in the dark.

Apple banking on tablets

The tablet industry is the one to watch. We published a blog post yesterday about Apple Inc. (NASDAQ:AAPL) banking on tablets next year. There is the strong possibility that cheaper Android tablets from Asustek Computer, Inc. (TPE:2357) (OTCMKTS:AKCPF), Lenovo Group Limited (ADR) (OTCMKTS:LNVGY) (HKG:0992), Hewlett-Packard Company (NYSE:HPQ), and Acer Incorporated (TPE:2353) will soon take over the market. Fortunately, Apple Inc. (NASDAQ:AAPL) is still expected to keep their share of profits.