So, your iPod should be one device, your phone should be a second device and your internet communicator should be a third device.The term "don't keep all your eggs in 1 basket" has been around forever...and for a reason.
The advice (17th century, so a fair bit short of forever) was really about having only one plan or idea and depending entirely on it. If you drop a basket you break all your eggs, but it’s a risk assessment. It’s not saying that you should have a bunch of baskets with one egg in each.