Technology I Can't Live Without

I'm trying to remember what life was like before I got my cellphone and it is a bit of a blur. My cellphone has
become such a part of my everyday routine that I would be absolutely lost without it.

Not only do I use it for the most obvious reasons of talk and text, it has become my entertainment center as well. I watch videos, listen to music, and take pictures with my cellphone; I don't even use my digital camera anymore!

I have become the email and text queen and it seems the only time I actually talk on my cellphone is when I'm talking to my mom (who doesn't know how to use a cellphone) or occasionally speak to my clients. If I hit 100 minutes of talk time in a month that is very unusual.

My cellphone comes with me where ever I go: from room to room, outside, by my pillow when I go to sleep and when I wake up. I rarely turn my phone off and when I do I feel like I will miss something. I won't say that I am addicted to my phone because I can take a day (usually on the weekend)  and just unplug: it's on but I leave it in another room and won't check it for the entire day and it's a nice break.

My cellphone, a Samsung Galaxy S4 in case you're wondering, is an absolute lifeline for me personally and professionally, and is the one piece of technology I can't live without.

What's the one piece of technology you can't live without?