This is the tutorial for the basic phone connection
https://learn.adafruit.com/introducing-the-adafruit-bluefruit-le-uart-friend/bleuart
Can you find the example sketch bleuart_cmdmode in the library? Can you change from the default SPI mode to the software serial UART mode? Do you have the recommended Adafruit app on your phone?
SoftwareSerial bluefruitSS = SoftwareSerial(BLUEFRUIT_SWUART_TXD_PIN, BLUEFRUIT_SWUART_RXD_PIN);
Adafruit_BluefruitLE_UART ble(bluefruitSS, BLUEFRUIT_UART_MODE_PIN,
BLUEFRUIT_UART_CTS_PIN, BLUEFRUIT_UART_RTS_PIN);