FRITZ!Fon MT-F Service - Knowledge Base
FRITZ!Fon keeps turning itself off
FRITZ!Fon keeps turning itself off, for example while conducting a call.
1 Recharging the telephone battery
The telephone turns itself off if the battery is not charged enough:
- Plug in the charging cradle. Make sure that you insert the plug of the charging cable all the way into the socket on the charging cradle.
- Leave the telephone in the charging cradle for at least six hours to completely charge the telephone's battery. Make sure that the charging contacts on the bottom of the telephone rest on the contacts of the charging cradle, and that the symbol for "Charging battery" appears on the display of the telephone.
The battery is fully charged when the symbol for "Battery state of charge" on the telephone's display is completely green. If the telephone still continues to turn itself off, then the battery is defective.
2 Replacing the rechargeable battery
You can purchase a genuine replacement battery from an electronics retailer. Using so-called aftermarket batteries that are not originals, like the kind available over the Internet, may damage your FRITZ!Fon.
Important:Rechargeable batteries wear out because they are subject to a natural aging process as physical and chemical changes occur within the battery; this is why they are not covered by the warranty (see warranty in the manual).