Yes, Android. From your first link:

"Although the phone will run on Android, according to Reuters, the company says it has custom built the handset using cyber defence technology to deliver privacy, connectivity and quality."

As so many times before, a lot of marketing blurb but not much detail. What exactly is secured and how? Combining the words "Android" and "secure" in the same sentence does not inspire much confidence. It could be possible for some definitions of "secure" but without any specifics... meh.