Aerial TV is an offline receiver for DVB-T and DVB-T2 signals via a USB tuner. You don't need data plan or WiFi connection. Aerial TV works by picking up local digital signals off the air with a regular antenna. It supports MPEG2, MPEG4 and HD reception where available and offers EPG functionality.

You will need a low cost USB tuner hardware. You can grab one online for less than €10. Make sure to get an rtl-sdr RTL2832 tuner. When it arrives, just connect the provided antenna and start receiving. You may need a USB OTG cable to plug the tuner in your Android device. USB OTG cables are inexpensive and easy to find.