Question

How do I turn java on on an Android phone?

Answer 1

Can you elaborate what you mean by "turn java on" and also tell us what you have done so far or what you intend to achieve.

Comments

I wanted to play a video on line and then my phone displayed "It seems your java on your phone is off, may you turn it on"

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i suppose it's referring to javascript. try using a browser that supports javascript such as Chrome, firefox or the default android browser