arduino + smartphone

​I want to link between arduino(Master) and my smartphone(Slave). I entered AT mode made HC-05 as master initialize it and made it linked with address to phone while it is listening after linking
how to go back to BT mode with that link to start send and recive data ??
​Thanks for help

MohamedSamy:
​I want to link between arduino(Master) and my smartphone(Slave).

It's a lot simpler if you do it the other way round.

I want to do it that way so i can use it back between 2 Adruino boards