The error on an Android tablet usually occurs due to a conflict in the phone dialer, SIM toolkit, or system cache. Since tablets often share the same OS architecture as phones, these system-level processes can crash even if you don't use the device for calls. Immediate Quick Fixes
How to Fix 'com.android.phone Has Stopped' Error - Expert Solutions The error on an Android tablet usually occurs
If your tablet has a SIM slot, power off the device, remove the SIM card, and reinsert it. power off the device