Answer

Strictly speaking, not freely everywhere.

In Jain Dharma, a deva in Dev Lok has vaikriya sharir, so he can change form and move around within the limits of his celestial existence. But he is still bound by karma and the rules of his realm. So the answer is:

• Yes, devas can move here and there
• No, they cannot go absolutely anywhere at will
• Their movement is limited, not fully independent

Explanation

Vaikriya sharir means a transformable body. Because of this, devas can:

• assume different forms
• move with great speed
• appear in different places within their allowed domain

But in Jain cosmology, even devas are not omnipotent. They remain under:

• karmic bondage
• the structure of the universe
• the limits of their birth in Dev Lok

So a deva is not like a liberated soul. A liberated soul has complete freedom. A deva does not.

Spiritual Understanding

This teaches an important Jain truth:

• Power does not mean freedom
• A subtle body does not mean liberation
• Only by destroying karma does a soul gain true independence

So even in Dev Lok, existence is still within samsara.

Takeaway

Dev Lok devas with vaikriya sharir can move and transform, but not absolutely anywhere without limits. They are powerful, but still bound beings in Jain understanding.