Mobile Secret Codes, USSD, MMI

#99 in: TOP_FREE LIBRARIES_AND_DEMO (🇧🇩 Bangladesh)

#94 in: TOP_FREE LIBRARIES_AND_DEMO (🇸🇦 Saudi Arabia)

#70 in: TOP_FREE LIBRARIES_AND_DEMO (🇵🇰 Pakistan)

#123 in: TOP_FREE LIBRARIES_AND_DEMO (🇩🇿 Algeria)

#44 in: TOP_FREE LIBRARIES_AND_DEMO (🇦🇺 Australia)

#183 in: TOP_FREE LIBRARIES_AND_DEMO (🇧🇷 Brazil)

#94 in: TOP_FREE LIBRARIES_AND_DEMO (🇵🇭 Philippines)

#117 in: TOP_FREE LIBRARIES_AND_DEMO (🇲🇽 Mexico)

#98 in: TOP_FREE LIBRARIES_AND_DEMO (🇺🇸 United States)

#131 in: TOP_FREE LIBRARIES_AND_DEMO (🇷🇺 Russian Federation)