FRITZ!Fon C4 – Service - Knowledge Base

FRITZ!Fon C4 – Service
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Display is defective

The display of your FRITZ!Fon is defective:

  • The display remains dark.
  • There are annoying lines across the display.
  • A whole line contains pixel errors.

1 Removing the battery and reinserting it

  1. Hold down the hang-up key (red handset) for about one second to turn the telephone off.
  2. Remove the battery from the telephone for several seconds.
  3. Reinsert the battery and use the hang-up key to turn it on again.