A: Take mobile devices testing for example, GSM RF: 5, WCDMA RF: 5, CDMA RF: 5, cdma2000RF: 5, TD-SCDMA RF: 5, Bluetooth RF: 3, 2.4GHz/5.8GHz wireless access: 3, micro-power mobile devices (NFC, wireless transmission): 5.

If the number of samples is limited and some model could be shared, make sure all number of samples is at least five, but this will extend the test time.