First you have to get the cell phone at the Mountains of the moon, where you have to beat the guy in mancala.
When you arrive at Giza, wear your turban and the tomb raiders will give you a shovel. The phone number on it is 555-6789. When you see Vince, call the number to distract him. His men run off and you can get the Moonstone from his satchel.
In poptropica,Nabooti Island, what do you do after you call Vince?
you call the number 555-6789
At Giza, on Nabooti Island, Vince's number is on the shovel, 555-6789. The call will distract him and you can grab the Moonstone from his bag. (It opens the Sphinx.)
His number is on the shovel (555-6789). Call him to distract him so you can grab his bag. (see related question)
The Moonstone. It is in the knapsack that Vince has. If you call him on the cell phone, you can distract him and get it. (His number is on the shovel.)
You call Vince using the cell phone (his number is on the shovel, 555-6789). When he goes away, get the Moonstone from his backpack.
5556789
It is 555 6789.
You need a cell phone. Call Vince at the number on the shovel (555-6789) and it will distract him. (see related question)
Call him on the cell phone (his number, 555-6789, is on your shovel). Then you can get the Moonstone from his knapsack. (see related question)
When you have the cell phone on Nabooti Island, dial 1225 and you will get a removable ELF hat and a bag of toys. (see related question)
The number is on the shovel : "Vince Graves 555-6789".