Unfortunately the process phone.android.com has stopped DETAILED FIX
I found a fix for those of us who still couldn't fix this issue agree the helpful comments above. Some people can't clear the cache or data from the phone app because of the error message. So this is what I did and it finally fixed it after 3 days of over thinking and software trouble shooting. Turn the device on and when you see the error message just hit OK...try to get through the initial set up (you can just go last the WiFi and Google setup of you'd like) by hitting the NEXT or OK keys between the error message pop-up...its hard but time it just right, you'll get it. Now you'll eventually be at the home screen. Now, keep hitting OK on the error message just like you have been...over and over...eventually after 30 to maybe 50 or so times (I noticed it varies for some reason...) the message will stop! BUT don't be fooled, it will come back. So while the message has went away, THEN proceed to take the following steps.
1.) Goto Apps, then find Settings
2.) Scroll down to Apps in the Settings mente
3.) Swipe over to the last tab, ALL (you won't find the app we're looking for under Downloaded or Running.)
4.) Find the Phone app and select it. Now, since the error message isn't popping up, you'll notice you can actually hit Clear Cache and then Clear Data and it'll actually do something this time.
5.) After hitting clear cache and clear Data, go back to the list that you found the Phone app in and scroll on down to SIM Toolkit and do the same thing (clear cache, clear Data). I don't know if this is necessary but these are the steps I took and doing the SIM Toolkit as well won't harm anything.
6.) Now you can connect to your WiFi and set up your Google by going to Settings-WiFi and Settings-Accounts-Google-Add Account.
I hope this helps someone because I thought my phone was doomed and some of talks comments helped me figure this out so.THANK YOU TO EVERYONE