Infinix Hot 2 (X510) on Android 6.0 doesn't show names when receiving a call My boss in the office asked me to help him upgrade his Infinix Hot 2 (X510) OS to Android 6.0 Marshmallow which I did. But after upgrading the phone, I discovered that when calls come in, it would only show the number but not the name.

How to fix it?
Based from Shelaf.com, you need to remove and re-add the Google Accounts and wait for them to resync.

Common Problems and Their Solutions
Problem 1: Contact not displaying names after making or receiving a call
Go to your Google Settings and remove all Google accounts. After some minutes, add them back and your problem should be fixed then.