I Phone 10
My iPhone hangs up after half a ring. I have the most recent update
iPhone X, iOS 14
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There may be several reasons due to which an iPhone may behave as described by you. Some of them could be...
- Battery health could also reduce performance --> iPhone Battery and Performance - Apple Support
- Incorrect handling of the iPhone --> Important handling information for iPhone - Apple Support
- Dust ingress into the iPhone - Cleaning your iPhone - Apple Support
- Water / Liquid entry into the iPhone---> Important safety information for iPhone - Apple Support
- Overheating due to exposure to the temperature beyond -20º and 45º C (-4º to 113º F). especially in the car because temperatures in parked cars can exceed this range -- Keeping iPhone, iPad, and iPod touch within acceptable ...
- Service of an iPhone by an un-authorised service personnel / agency / store
- Modification / Alteration of an iPhone by a third party vendor
- iPhone is Jail Broken