Have you tried looking up the free section on websites? Sometimes people give away things like phones, though you would probably have to buy a new SIM card, which aren't too expensive. Also ask around and see if anyone wants to give an older phone away in exchange for something like gardening, housework, etc. You never know, word of mouth can be powerful sometimes.
I just googled 'free phone plans', and there are many sites, but I doubt they are completely 'free'.
I wish I'd brought my old phones with me when I moved, cos I could've sent you one.
It does get frustrating at times because so much is done on the internet now. I get frustrated doing study as sometimes, like yesterday, our the net where I'm staying wasn't working. I think maybe we have become too reliant on it, though it is handy.
My prayer for you:
Gracious Father, please help Levi to obtain another phone somehow, or to earn an extra income to buy a cheap one, so that he can continue with your work and spreading your word to others. Amen.
Good luck and keep us informed.