I noticed that our HTC Thunderbolts were upgraded from Android 2.3 to Android 4.0. That is very nice, I thought it would never upgrade.
Now that it did, I am wondering, why / what rules qualify an upgrade? Is it once every 18 months regardless? Is it diverse depending on which phone you have? does it also depend on the carrier and/or brand? (are the HTC phones generally this way, or is it Verizon's choice)
Please clarify the Android OS update policy for me.
It would be extra good if you knew the policy on the iPhone OS, and how it compares.
Oh, and I already know that apps (YouTube, Play Store, Play Music, Gmail, Games) are not part of the OS, except for certain bundled apps. (Camera, Internet, Phone, etc.)