Q: Hi, i've upgraded to iOS 9.3.1 on my iPhone 6s and now it does not ring, the alarm does not work, the camera does not work, the vo ... Hi, i've upgraded to iOS 9.3.1 on my iPhone 6s and now it does not ring, the alarm does not work, the camera does not work, the voice on navigation does not work and there are issues with wi-fi and bluetooth. How do i downgrade the iOS? more
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Helpful answers
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Apr 5, 2016 3:37 AM in response to Dr Bob'72by thunderzzz,Downgrade was never supported by Apple. Try standard troubleshooting techniques - restart, reset, restore.
Get help connecting a Bluetooth accessory with your iPhone, iPad, or iPod touch - Apple Support
- Press and hold the Sleep/Wake button
- Press and hold on the Home button
- Keep holding both buttons until the display turns off and back on with Apple logo on it.
Alternatively, you may go to Settings - General - Reset - Reset All Settings
If this does not help, restore your device to factory settings. Note that this will erase the data from your device.
Take a look this Apple Support article: Use iTunes to restore your iPhone, iPad, or iPod to factory settings - Apple Support.
If these steps don't work, contact Apple and ask for help.