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I'm trying to save battery but I need my alarm in the morning. Will it still go off if on airplane mode?

p.s. I have an HTC Inspire.

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If you have an alarm app from the Amazon Appstore, you might have the opposite problem -- you might not be able to shut it off. I had Gentle Alarm and the alarm service ran fine, but to shut it off it opened the app which attempted a DRM check. The check failed due to no internet and the app closed, leaving the alarm running :P – Matthew Read Oct 5 '11 at 15:05

Yes. Airplane mode (flight mode) only disables your phone's signal transmitting functions, not the functions that don't require a signal to function.

Your alarm will still work.

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As @Jasir says. Your alarm will still work in Airplane mode.

Be careful as there is another setting on your phone.

Clock > Alarms > Menu > Settings > 'Alarm in silent mode'

You will need this ticked if you put your phone in silent (saving more battery) and still want the alarm to go off!

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