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Yes you can use the KXTGD563 with only a Cell phone paired to it without needing a landline.
Sorry, there was a problem. Please try again later.You do not have to have a landline to make and receive calls, but the unit will not take messages from cell lines.
Sorry, there was a problem. Please try again later.think he needs a land line for the phone.
Sorry, there was a problem. Please try again later.

