cellular data issue
So if I have a cellular data issue how do I fix it without a desktop computer
As per the steps provided in the support article that led you here, you need a computer.
If you don't have a computer, borrow one from your relatives/friends/neighbors or ask for help at an Apple Store or Authorized Service Provider.
For any further questions, please contact Apple Support directly, using this specific link:--> Apple Support
Regards
Giulio