My first Android phone was rge HTC Droid Eris....My first phone ordered was the Nexus One. I brought all the accessories waiting for it to be released and then it was released for GSM networks only and not on Verrizon. I was so angry!!!!!
Coming from the iPhone 4, I made the switch with the LG Optimus G. Next came the Nexus 5 which is where I fell in love with Android and haven't looked back.
For me it was Android 2.3.4 ginger bread on the infamous Motorola DROID Bionic that phone got updated through ice cream sandwich 4.0.4 to jelly Bean 4.1.2 loved that phone now I'm on a pixel 2 xl running Android p Dev preview amazing how far Android has come
My first Android phone was the Galaxy S Captivate (AT&T), back before Samsung figured out that it's much easier to use a single form factor across all carriers. I rooted and modded the bejeebus out of that phone because back then, the GPS was crap and there were some other crippling performance issues I don't recall anymore. I rarely root or unlock the bootloader on phones now, which to me shows how far Android has come since those days.
I got the OG Moto Droid back in '09. Shipped with Eclair, I believe, and later updated to Fro-Yo. I got into rootin' and ROMin' and ran several different iterations of CyanogenMod. Loved that phone, with it's slide-out keyboard, and "yuuge" 3.5 in. screen. Good times.
Im not entirely sure here. (poss need some advice on this)
My first android phone was the Tmobile G1 which I got when first released. It may have had Android 1.0 on it before a jump to 1.5. Its currently got 1.6. This may have been its last android update ?!
After the G1 came the original HTC desire. Brilliant phone. HTC peaked here, got close again but never reached those heights again. A Real shame. Jumped ship after that to the Galaxy S2 and have been stuck in Samsungs loop ever since (S9+ currently) - Sorry alittle off topic there. Just to look back actually
I guess I lucked out, my first Android was a Moto X Second Gen. It arrived with Lollipop but upgraded to Marshmallow about five minutes after I booted it up for the first time. But that phone showed me, an avid Windows Phone user, what I was missing, and misinformed about Android.
After that a Moto X Pure now on 7.0 and a G6 which will apparently get 8.0 when I change it into a S9+.
My first was an HTC Hero. Got it 2 days before release from Best Buy, and I think it was on 1.5 Cupcake or 1.6 Donut. I *think* it got updated to 2.3 Gingerbread, but it might have been a custom ROM I was running.
The first Android phone I played with was the G1 on 1.0 or 1.1...whatever it released with. We had one for testing at work, and it was HORRIBLE. But I liked it for some weird reason anyway.
The Samsung Galaxy Ace which at the time I thought WAS Android. I knew nothing about TouchWiz. It was Android 2.3.4 Gingerbread and I rapidly went to CyanogenMod 7 and eventually tried GalaxyICS which was Ice Cream Sandwich for the Ace. It was a lot of fun to tinker with, a nice first experience.
I recently reflashed the stock ROM on it to see how it was and couldn't believe how far things came since 2011.
HTC Droid Incredible running Eclair. I remember waiting eagerly for Froyo. Also the first phone I rooted and ran a custom ROM and kernel on. I remember how nervous I was as I ran "unrevoked" for the first time.