This error message is triggered by the phone's toolkit application, or possibly a SIM card fault.
If you are constantly getting the “Unfortunately the process.com.android.phone has stopped” error, try the following methods to fix it first:
1. CLEAR CACHE AND DATA OF THE PHONE APP
To access this option, go to Settings. Then, select Apps. Tap the All tab so that all the apps of your device will be displayed in a column. Scroll down until you see “Phone” or an option similar to it. Tap it, followed by selecting the “Clear Cache” option. If the problem persists, repeat the steps and include “Clear Data” in your actions. Reboot your phone for the changes to take effect.
2. CLEAR CACHE AND DATA OF THE SIM TOOLKIT
Repeat the steps shown above. But this time, choose SIM toolkit from the list of apps under the All tab.
3. FIX USING CUSTOM RECOVERY
Install the latest AROMA file manager, which can be found in the XDA website. Use it to delete the cache or temporary folder of “Phone” as well as the SIM toolkit app. Then reboot your device for the changes to take effect.
Let me know how it works out for you.
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