You have just been assigned to test a native mobile application for a delivery recording device used by mail and package

[answerhappygod]

You have just been assigned to test a native mobile application for a delivery recording device used by mail and package couriers. This is a new version of a product that is already in production. The production version of the product has had issues with the hardware particularly with capturing signatures entered on the device and with associating photo images to the proper delivery addresses. This has resulted in a problem with reconciling the package delivery information. You need to test the application on a network with 1000 of these devices sending information back to the main office. Budget is limited as is the ability to obtain 1000 devices.
What should you do?

A. Find or develop a simulator that can simulate the network interaction of many devices
B. Find or develop an emulator that can emulate the application running on the hardware and OS of the device
C. Implement crowd-source testing to get a large number of people to use their own devices to test the network
D. Obtain the real devices because any other testing will not be representative of the real behavior of the device