Replace "IMEI OF YOUR DEVICE" by the first imei you noted down

Change the csc of your phone only samsung devices bought from india supports call recordingTp change the csc if your device:Go to phone app dial *#06#A dialogue box appears showing your imei no note down the 1st imei noThen,dial*#272*IMEI OF YOUR DEV...

F62 supports carrier aggregation i think

Yes