iOS 9.3.2 fixes bugs and improves the security of your iPhone or iPad. This update:
Fixes an issue where some Bluetooth accessories could experience audio quality issues when paired to iPhone SE
Fixes an issue where looking up dictionary definitions could fail
Addresses an issue that prevented typing email addresses when using the
Japanese Kana keyboard in Mail and Messages
Fixes an issue for VoiceOver users using the Alex voice, where the device switches to a different voice to announce punctuation or spaces
Fixes an issue that prevented MDM servers from installing Custom B2B apps
For information on the security content of Apple software updates, please visit this website:
https://support.apple.com/kb/HT201222?viewlocale=en_GB