Wileyfox Swift Mobile data not working after update to Nougat 7.1.1
Overall it looks like a issue related to the kernel. I would say it would be possible to fix this just by installing another version and/or install a custom kernel which very likely fix this issue if it is related to the kernel. While you are trying this I would also recommend contacting the developer and reporting this issue. Also try another Simcard slot if you can. I had a similar issue sometimes with my phone too but a reboot fixed the issue usually.