Connecting bluetooth modules

Hi Everyone! I'm quite new to Electronics but I'm working on a project that requires some knowledge about the same. I need to connect 4 bluetooth modules that are connected to 4 separate arduino boards to a smartphone. This means there will be multiple connections (4 in no.) to the phone. Please let me know if this is possible or not. If not, I was thinking that if I can connect those four to a master bluetooth module and that master module will be connected to the phone. Any help will be appreciated!! It's quite urgent for me to resolve this issue. -Regards Syther

You might want to connect all 4 boards to a master module using nrf24l01 modules and then having one bluetooth module (HC-05 or HC-06) that talks with the phone. This is probably the easiest thing to do.