I have a iphone 6 that doesn't turn on and wont show the chargong icon when i plug in the charger I don't know if it needs a new lcd screen or a new battery should I call and make an appointmentire for them to check the phone

Genius Bar highly recommends every customer to make an appointment.

Definitely make an appointment or plan on spending a significant amount of time just waiting to talk to someone.

Call or schedule a visit online

Yes call! If not I would suggest arriving when they open as they can get pretty busy. The staff is awesome though!