How can I keep Fritz box after terminations of my contract

[Omta]

I, 

i have Cable 250 with fritzbox 6660 and wanted to keep the box after the termination is that possible ?? 

[MasterScorpion]

No.

Go to a retailer of your choice and buy one.

[Omta]

I I bought one, does it work with Vodafone contract if I keep the contract but returned the fritzbox? 

[RobertP]

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@Omta  schrieb:

I I bought one, does it work with Vodafone contract if I keep the contract but returned the fritzbox? 

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yes sure

but needs to be a retail box with retail article number