Android versions

The version history of the Android mobile operating system began with the release of the Android beta in November 2007. The first commercial version, Android 1.0, was released in September 2008. Android is under ongoing development by Google and the Open Handset Alliance (OHA), and has seen a number of updates to its base operating system since its initial release.
Since April 2009, Android versions have been developed under a confectionery-themed code name and released in alphabetical order

• Android 1.0 (API level 1)
• Android 1.1 (API level 2)
• Android 1.5 Cupcake (API level 3)
• Android 1.6 Donut (API level 4)
• Android 2.0 Eclair (API level 5)
• Android 2.0.1 Eclair (API level 6)
• Android 2.1 Eclair (API level 7)
• Android 2.2–2.2.3 Froyo (API level 8)
• Android 2.3–2.3.2 Gingerbread (API level 9)
• Android 2.3.3–2.3.7 Gingerbread (API level 10)
• Android 3.0 Honeycomb (API level 11)
• Android 3.1 Honeycomb (API level 12)
• Android 3.2 Honeycomb (API level 13)
• Android 4.0–4.0.2 Ice Cream Sandwich (API level 14)
• Android 4.0.3–4.0.4 Ice Cream Sandwich (API level 15)
• Android 4.1 Jelly Bean (API level 16)
• Android 4.2 Jelly Bean (API level 17)
• Android 4.3 Jelly Bean (API level 18)
• Android 4.4 KitKat (API level 19)Android 4.4W–4.4W.2 KitKat, with wearable extensions (API level 20)
•  Android 5.0–5.0.2 Lollipop (API level 21)
•   Android 5.1–5.1.1 Lollipop (API level 22)
•  Android 6.0–6.0.1 Marshmallow (API level 23)