My LCD has broken . my mobile is LGKU099R

You need to replace the LCD screen.

If you have repaired small electronic by yourself you can try DIYing, otherwise take the phone to a repair shop.

Instructions: LG Viewty KU990 disassembly


Part: LG KU990 Viewty LCD screen

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Many thanks.

If your phone is still under the warranty, you need to refer to the manufacturer or reseller to replace the LCD.

Otherwise, you need to bring your phone into any authorized repair center for your phone for repair.

Have a great day!