iPhone Broken front panel:
Take a deep breath and see if your iPhone will turn on and operate normally. In most cases, the iPhone is still functional but now a cosmetic disaster. Take a closer look and make sure the display was not damaged from the fall, as you will want to replace this at the same time as replacing your front panel if it is damaged. Generally, the front panel will have absorbed the brunt of the fall and your display will be unscathed. In this case, you must replace the front panel. It is possible that it appears nothing is happening because the display is bad. If the iPhone sounds like it is working properly but nothing is visible, it is possible the LCD display is bad and must be replaced.
iPhone Symptoms of Bad LCD Assembly: