My GPS receiver won't lock with the built-in antenna; I connected it to my Pixel phone USB port, started up Droid Term, and immediately saw the NMEA strings - good. However, no fix, just a lot of commas. So then I plugged in my external antenna/LNA and almost immediately got a fix. My board has a blank component location in the second spot from the U.FL connector - if I understand correctly, this is where the capacitor that needs to be removed was and is thus already removed.
Certainly not useful without a remote antenna - makes me think the built-in antenna is not functioning correctly.