I dropped my Android phone and now it won't come back on.

Hi,

Do you get any signs of life in the phone if you plug in the phone charger and switch on the charger?

Is there any physical damage showing on the phone, e.g. cracked screen or dented/broken case etc?

If there are no signs of life and there are no signs of any external physical damage then the phone will have to be opened and the internal components inspected for any obvious damage and tested as to what the problem may be.

You may have to contact a reputable, professional mobile phone repair service and ask for a quote to repair the phone.