Hello,
I have had a few customers come into my T-Mobile store with the T-Mobile variant OnePlus 6T indicating that the Phone application was crashing when you either open it or open it and select the Contacts tab. I was able to reproduce the issue and immediately began troubleshooting the device such as wiping the cache partition, clearing the Phone app and Contacts app cache; still no luck.
What fixed the issue? I uninstalled the T-Mobile Visual Voicemail application and reinstalled it to the phone and it fixed the problem. Please note that you cannot just uninstall the VVM application, you have to reinstall it. I'm not too sure what is causing the issue itself or how they correlate with one another, but it worked. I'm sure with the update T-Mobile is pushing out soon that it will be fixed.
Regards,
Tyler
01-04-2019 09:15 PM