If your AT&T CLP99483 cordless handset has a blank screen, remove and reseat the batteries, fully recharge, and clean the battery contacts. Place it on the base to reset. If still blank, the LCD or internal connection has likely failed. General handset guidance:
(https://manualslibraryy.com/att-bl102-2-handset-cordless-phone-user-guide/)
Tech pro
December 2025