You need an iPhone 6s or later to use Hey Siri without being connected to power. You should still be able to access Siri by holding the home button and you can use Hey Siri when connect to power but not otherwise. (The official Apple Support Article is: https://support.apple.com/en-gb/HT204389)
siri won’t respond unless hooked up to charger What’s the problem. iPhone 6
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You need an iPhone 6s or later to use Hey Siri without being connected to power. You should still be able to access Siri by holding the home button and you can use Hey Siri when connect to power but not otherwise. (The official Apple Support Article is: https://support.apple.com/en-gb/HT204389)
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siri won’t respond unless hooked up to charger