My phone is on but won’t respond to me pushing any buttons / apps- not allowing me to switch on or off

On an iPhone 7, use these gestures (to perform a "forced" restart):

Press and hold the side (power) button and the volume down button at the same time. Only when the Apple logo appears, release both buttons.

If the issue persists, it might be a hardware (battery? screen? other internal component?) failure but we, just users like you, cannot diagnose that issue remotely, sorry.

I suggest that you make an appointment (*) and have your device inspected at an Apple Store or AASP (Apple Authorized Service Provider) among this list:--> Apple – Location Selector. After checking it out, they'll give you all the available options.

Regards

Giulio

(*) You can do it:

• Online:--> Genius Bar Reservation and Apple Support Options - Apple;
• Contacting a local Apple Store or AASP among the list provided above;
• Using the "Apple Store" app, available and downloadable from AppStore.

Hey there,

Try force restart your iPhone 7:

Press and hold both the volume down button and the Sleep/Wake button at the same time. When the Apple logo appears, release both buttons.