The iOS is the most secure operating system on mobile, I've never heard of viruses on it. The apps audited line by line before being released on the market. The performance on every device is greater than anything I've seen on an android device.
"On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival."