Grandpa Devies
After reaching the hotel room, Joshua removed his shoe moved its heel and took out his secret sim card which he uses to talk to Bill.
It is a very special type of sim card, the number can never be traced and no one can call him, it works one-way only he can make the call and even while he is calling, the number and the signal cannot be traced nor can this call ever be recorded.
He took a lot of safety measurements before meeting Amara in a chance encounter that he planned as he knew the people, he is dealing with are dangerous and he should be very careful so he prepared himself well in advance.
After changing the sim card in his phone, he called Bill and his assistant immediately answered the call. He was always on alert as he knew his boss can call him at any time. Therefore, he never keeps his phone on silent.
As soon as Bill answered the phone, Aaron did not wait to share pleasantries and directly came on point.