This forum is build for mobile devices, i don't know what are you talking about here that this forum is not build for mobiles, you will need a phone that supports WAP browsing like the Ericsson T20s
https://www.gsmarena.com/ericsson_t20s-211.php

Or search for an app that emulates WAP, and then you can access bitcointalk
https://bitcointalk.org/index.php?topic=5276911.60;wap2