Do you Get the error message "Unfortunately the process.com.android.phone stopped" there are, actually a few ways to fix it.
The error message is triggered by the phone or SIM Toolkit application. So, if you are constantly getting the 'Unfortunately process.com.android.phone has stopped "error, here are ways to make your device:
1. Clear cache and data from the Phone App To access this option, go you to Settings. Then select Apps. Tap the tab All so that displays all the apps from the device in a column. Scroll down until you see "Phone" or option seems. Tap it, followed by the "Clear Cache". If the problem persists, repeat the steps and include "Clear Data" in your actions. Start to make your phone for the changes.
2. Clear the cache and the data from the SIM Toolkit, repeat the steps above. But this time, select SIM Toolkit from the list of apps under the All tab.
3. Fix using custom Recovery Install the last AROMA file manager, which can be found in the website XDA. Use it to remove the cache or temporary folder of the "Phone" and the SIM Toolkit app. Reboot to make your device for the changes.
4. Do a factory reset As a last resort, back up your data and perform a factory reset. To do this, turn the unit normally. Then press and hold the Volume Up, Home and Power buttons all the way to vibrate the phone. Once it vibrates, release the power button but keep your fingers pressing on the rest. However, once you get the Android logo, let go. From there, backup and do a factory reset