No.
NRF24 cannot talk to phone or PC, or the modem, for that matter. They can only talk between themselves.
The whole concept is pointless anyway, as the modem can talk directly to both PC and phone. That is what modems do, and anything in between is redundant. If you have already bought the NRF24s, think about this for a few more minutes, you will probably come up with something more sensible, and relevant to Arduino.