I haven't had any issues on both my wife's 2011 X3 and my 2007 ///3 with CIC retrofit. I've got full compliment of functionalities on both cars. May be try reconnecting as well as resetting your iphone 5. Good luck.
2007 E92 6MT - Silverstone II with /// Performance Exhaust with ACM Test Pipes and BPM Sport Stage II Dev-Tune - Proper engine warm up, 12-monthly oil change, Castrol TWS 10w-60
2014 F15 X5 3.0d