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Whenever I try to access my contact details or try to dial in receive this message "Unfortunately, Contacts has stopped"
Hi @Suresh3532
Welcome to the community 
Sorry to hear about this, must be frustrating. Can you try the below?
Go to Settings > Apps > Contacts > Force Stop > Storage > Clear Data
Once you have done the above, restart the phone and see if you can now access your contacts.
Let me know how it goes 
Not solutions my problems.
This step already follow. But my problem not solution. So Plz help me and it mobile is very bad mobile. This mobile is starting problem. I am goes more time Sony services center but my problem not solved.
Hi @Suresh3532
Have you also tried testing the phone in safe mode? If not, can you try this and see if you are still experiencing issues?
Let me know 
Hi @Alias659
Welcome to the community 
Are you also having the same issues? Have you tried the above suggested solutions?
Let me know 