dhrsaad13 Frenz64
Sorry, I failed to mention to perhaps try your esim on another phone temporarily. (partner's, friend's, or your old phone)
In my experience, after I activate an esim successfully, then I need to request a new esim with the carrier to activate my line elsewhere. (e.g. esim works on another phone > request new esim > try on your phone) Request a new 1 anyway then test it on your phone?
Do:
Settings > system reset > reset mobile settings
QR code esim activation is good to avoid mistakes. or double checking with your carrier that the esim works.
Yeah, stockOS has this issue for some people:
https://discuss.grapheneos.org/d/33125-unable-to-activate-esim/83
https://discuss.grapheneos.org/d/33125-unable-to-activate-esim/72