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SourceI've noticed that there is A LOT of confusion surrounding the cell phone replacement part called a 'digitizer' or sometimes called 'LCD digitizer'. So, what exactly is a digitizer or LCD digitizer? Well, hopefully to end most of the confusion, it IS NOT an LCD.
The LCD (Liquid Crystal Display) is like a super thin and fragile computer monitor, it's the source of the image displayed on your phone.
The digitizer by definition is a device used to convert analog signals into digitial signals. In the case of our cell phones, this device would be the glass that covers the LCD. Yes, the glass piece that is attached to the LCD is the digitizer... or sometimes called LCD digitizer. It converts your actions (press, swipe, etc) into a digital signal that your phone understands. The data from the digitizer (glass) is transferred to the phone by the attached digitizer flex cable or digitizer flex ribbon, that should be included in your purchase of a replacement LCD digitizer. It's pretty difficult to preserve the integrity of the flex cable when there is a digitizer replacement performed.
So, when we have an LCD assembly, minus small parts and frames, we're looking at 3 major components...
1) the digitizer (front glass),
2) the digitizer flex cable (should be attached to the glass) and
3) the LCD display unit.
All 3 of these components can be purchased separately or all together. Although, I wouldn't recommend to anyone that they purchase the digitizer without the digitizer flex cable. Mounting the flex cable can be tricky with some phones and if not done correctly will give you poor functionality of your touch screen LCD.