from Indonesia and having the same problem, new device and i immediately updated the software but got no signal still, but curiously the device still had no signal before the update. Could this be the carriers problem? OS? Or hardware?

i also have the same problem, where it detects the card but it only has no bar or at best 1 bar of signal. its pretty annoying i can get even 1 bar, tried updating the carrier setting still nothing. even contacting the carrier provider, they said it wasnt the cars problem, which makes sense cause i tried it on other phones and it worked. PLS HELP! OR UPDATE! OR ANYTHING! Phone : iPhone 11 Ver. : iOS 14.0.1 Region : Indonesia Carrier : Telkomsel