Utilizing tools available online, free and efficient

This question has been lingering in the back of my mind, but was never clear enough to address it with a serious resolve. One day I was feeling creative and typing up a storm at work (during down time, as I still have a day job completely different from my writing hobby.) The text that I composed on that day was something I would've liked to have typed on my phone, and this is where the puzzle began. How can I manipulate the text file into my phone?

qrcode.meetheed.com/question3

There are many cloud services, but I didn't want my log-in credentials anywhere near the RAM space on a work computer. I usually carry a thumb drive on my keychain, but while it would've been easy to save the file onto it, it still posed a problem getting the file into the phone.

Finally, it dawned on me that if I composed my document purely with ascii characters (and by that I simply mean the letters A thru Z, numeric characters, and the select few special characters that vintage typewriter contain for apostrophes, quotes (NOT smart quotes!) and the like. As long as these typographical characters were used, I could create QR code consisting of roughly 4000 characters.