So, I was bored, and I had my phone (Xiaomi Redmi Note 5A Lite btw) lying around. Then, I remembered that I had a Sony Ericsson T230 lying around somewhere too, and started searching for it. Eventually, I found this phone. Also I found a USB cable which had a plug which connected to the phone.
Turns out that cable was a Prolific USB-to-serial converter which connected to a Handsfree connector (apparently it has some sort of serial connectivity). So, I connected it to my laptop and installed
minicom on it. And... it didn't work. I couldn't type anything. Then, I googled "how to interact with /dev/ttyUSB0" and found that GNU
screen supports connecting to
/dev/ttyUSB0, you just have to pass it as an argument. Of course it didn't work without root rights (because
/dev doesn't allow interacting with files without being an owner of that folder, and you know who owns
/dev... root). So, the command I used was
sudo screen /dev/ttyUSB0.
I found out that you can use AT commands to interact with the phone. I immediately found a AT command manual for the phone. Here it is.
Nothing. Just decided to share this fun fact. I've also discovered that you can turn on OBEX communication through a special AT command (
AT*EOBEX), but it didn't work. I couldn't send anything there.
Yeah. I'm just lazy to get my blog up and running, so decided to post it here.