I signed up for Visible yesterday, got a new phone number, and received my SIM card today.
I loaded the app and followed the instructions add the new SIM to my phone.
My phone is an unlocked OnePlus Pro 8 5G (IN2025) with dual SIM slots. Visible customer service confirmed my phone is compatible, and my IMEI numbers are fine and compatible.
I put the Visible SIM into the SIM2 slot (IMEI2), and followed the instructions to reboot my phone. I got 3 bars with Visible. I could not make a Phone call... HOWEVER, I did have Data service!
When I tried to make a Phone call, I got some error recording about "cannot place this call".
To troubleshoot, I tried the following:
Nothing I tried work. Data is working, but everything I tried I could not make a Phone call.
Visible customer service said "There must be a problem with your SIM, we'll overnight send you a new one." I'm fine with that, but I don't see how that could be the problem if I have Data working fine, which to me means that the SIM is activated. Data works. Only the Phone calling doesn't work.
I would just give the new sim a try, maybe there is some corrupted information on it. If that solves your problem please post back so others can learn!