Will I lose my jailbreak if I unlock my iPhone 4S?

My iPhone 4S is currently on 5.1.1 and jailbroken and from AT&T. I want to switch to tmobile but that means unlocking my phone. Please tell how to keep my jailbreak I do not want to upgrade!

Pay $10-$20 for a service to unlock. I can do it for $12

I don't think your jailbreak will be removed to your phone if you unlock your phone because Jailbreaking and unlocking is two different things. There's a n unlock that no need to install a software or a hardware to your phone.

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