That’s an interesting thought… so I decided to pull out my multimeter to see if there was conductivity between the pads and the internal antenna. Testing between the four ground pads and the ground plane I was able to get a connection. Look at the photo below and see the two points I tested on the opposite site of the board and the center of the MMCX pads. The green highlighted point I was able to get a connection and the red was no connection. So I think you are correct perhaps…
I will upload a layout of that RF chip in a couple minutes…
okay here is the chip layout… from the datasheet it says that ANT1 and ANT2 can be changed by setting VRX1 & 2 and VTX1 & 2 to a combo of high and low
As a side note… this chip is able to do 33.5dBm PA Output Power