How to stop 2.5 years old from iPad or phones. She is quite addicted. If it's taken away, she will be kicking a fuss.

Introduce arts. Because it needs parents to do it first for the child, which in parallel with others already adviced,you must be present,put away your own gadgets. Arts also give results that the child can keep and display. Some suggestions: hand/feet painting, origami, paper collage, cut and paste. Nowadays you can easily buy art supplies,pre-cut papers etc. Have fun!