Unfortunately, with strict security with no explanations many users find it difficult to understand and thus find themselves locked out of his or her own account.
However, along with the issues of security, the iPhone do not leave too much of explanations to their user thus keep them completely in the dark.
Gmail owns the right and can block sign-in attempts for any user at any point of time if it feels any unethical activity or activity beyond the regular or expected thing. Gmail can stop updating and block sign-in for all sorts of reasons and that is done to maintain the security and privacy of the users. If the user tries to log in from different device or from different location then Gmail blocks the sign in authority thinking the account being accessed by some unauthorized source or being get hacked or you can contact Gmail Technical Support Toll Free Number in case of being hacked.
The iPhone users can fix the problem of updating the Gmail on its device can be resolved in different ways. The user can
Visit the Gmail website and check for all the alerts
They can review their recent device on Google’s website
Do the CAPTACH reset
Make sure that IMAP is enabled
Remove the Gmail account from the iPhone and reset it again
I loves to writes technical contents on email and web mail account protection and security. I works as an independent technician and online content writer. My motto is to spread global awareness about email protection. I have been active for the last 10 years. Gmail Helpline Number 1-888-467-5540 (toll free)