My first one was a Samsung Galaxy S1 that I got in 2013 and it was a great little device that was easy to open up and repair. It had only 512MB of RAM but that was plenty for basic phone needs, web browsing and running some Android apps like AnkiDroid at the time.
HTC Desire, can’t remember the year but I do rember it was a damn good phone.
Virgin Mobile LG Optimus V. This was in 2011 or 2012. It was a prepaid service and the phone was only $150. It was rooted so I could remove the Virgin Mobile software from the tiny 2Gb(?) storage.
My first ever Android phone is a rooted Samsung Galaxy Young, it has less than (i think) 200 MB internal storage, so I always need to delete apps at that time.
I guess rooting a phone is more straight-forward back then, just one “update” zip file, and then it’s done.
My 1st android device would be 2nd hand xperia x10, i remembered installing cyanogenmod 7 on it and learning about rooting through it
Samsung Galaxy S