Metrophone

Metrophone is the current series of smartphones designed and marketed by Metronics. It competes Tephra phones, Samsung Galaxy, iPhone, TheoryPhone, ViraPhone and Ternaphone. Metrophones use the Polaris operating system. The recent flagship model is Metrophone M22, which is released on September 29, 2022.

Software
The Metrophone uses the Polaris OS. However, you can jailbreak to use Android. PTSUG can be installed using TheoryHack.