Unlock my iphone 4s iOS 7.0.4?

Can I unlock my iphone 4s iOS 7.0.4 for free after jailbreaking it because soon i'm going to jailbreak my iphone 4s and another thing is will i be able to update my iphone in future?

No Jailbreak can't unlock your iPhone, it's just give you root access to your iphone, meanwhile jailbreaked iPhone will still able to update in the future, just put it in either dfu or recovery mode and restore with iTunes, it will give you the latest version.

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