The #3307# Code on iPhone: Meaning and Use Explained in this Easy Guide
Dialling #3307# is as useful as singing, “London Bridge is falling down”. It won’t boost your cellphone signal or unlock any extra battery power.
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What Happens When You Dial #3370# or *3370#
This article debunks common myths about #3370# or *3370# codes. Discover what dialling these codes on your cell phone really does.