Alright! This is the first tip that I will post here on our blog. Here you go!

    "Did you know the alarm will still sound even when your phone is switched off? So power down, save your battery, and relax - your phone will still wake you in the morning."

Be sure that the active profile is not set to "Silent" mode. If so, your phone will still alarm but you'll not hear it.
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What can you say about this tip? Did you know this? Let us know on the comments section below.