How to turn my iPhone 4 into a Wi-Fi hotspot without jail breaking?

How do I turn my iPhone 4 into a Wi-Fi hotspot without jail breaking?

You have to do it through your phone carrier, can you also answer my question on my valentine subj

Settings > Personal Hotspot > On

Simple. Go to Settings > Personal Hotspot. Turn personal hotspot on and enter the code in the device you want to tether.

If you have a Gestapo carrier, you might not have that feature on your iPhone. I've had it on my iPhone 4 since I got it.

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