Remember the most recent country code

[vinaygopinath]

Problem

Users may not save/input phone numbers with the international calling code, and manually typing it in every time is an inconvenience.

Solution

Remember the country code of the most recent phone number entered/shared by the user, and automatically prefix the phone number that is missing the country code with the remembered country code.

Requirements

• Detect the presence of the country code when one of the "Open " buttons is clicked.
• If the country code is found to be missing, fetch the most recently used country code, if any, and prefix it to the phone number
• If the country code is available, persist the country code locally for future use before invoking the messaging app with the full phone number.