Assalam o Alaikum!
Main yeh maloom karna chahta hoon ke Android ke versions main kia farq hay..
kia iski apps alag alag hoti hain means 2.1 ke liye alag or 2.3 ke liye alag..
jis tarhan symbian series main hota tha
or kia unse applications slow ka bhi problem hota hay jesay Java 1.0 or 2.0
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