I only have an iphone, and for some reason it cant identify hc-05's. The only terminal im using is the serial monitor in the arduino IDE. But, the problem isn't happening when I have the IDE running. Even if I just connect and don't communicate at all with the hc-05, it will disconnect shortly. For power, im using a 5v power bank and I connected the vcc of the hc-05 to the 3.3v of the arduino.