If you are seeing the error message “Unfortunately the process.com.android.phone has stopped” after you installed a new ROM or updated your firmware, there actually a couple of ways to fix it.
The error message is triggered by the phone or SIM toolkit application. So, if you are constantly getting the “Unfortunately the process.com.android.phone has stopped” error, here are ways to fix your device:
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. Reboot your device for the changes to take effect.
4. Do a Factory Reset
As a last resort, backup your data and perform a Factory Reset. To do this, shut down your device normally. Next, hold down the Volume Up, Home and Power keys altogether until the phone vibrates. Once it vibrates, let go of the Power key but keep your fingers pressed on the rest. However, once you see the Android logo, let go. From there, backup and do a Factory Reset.
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