For decades there has been endless policy wrangling over whether “unlocking your phone” (removing restrictions allowing you to take the device with you to another carrier) should be allowed. Giant carriers have generally supported onerous phone locks because it hampers competition by making it harder to switch providers. Consumer rights groups and the public broadly support unlocked devices.
Try a Galaxy S5…
Antennas are proprietary to different networks.
The antenna isn’t chipset agnostic? TIL. I normally work with radio transmitters for LoRa and Bluetooth where the antenna is just a wire connected to a radio chipset module so I assumed 4g/5g were the same
Yeah, I don’t think there are many models of phones with proprietary antennas, but there are, or at least were a couple models.