Converting a phone number to E.164 format is essential for ensuring it works correctly across international networks and digital platforms. The process is simple: remove all spaces, brackets, and dashes from the number, drop any leading zero used for local dialing, then add the appropriate country code (like 91 for India) and prefix it with a “+” sign. The final structure should follow +[country code][phone number] with no extra characters and a maximum length of 15 digits. For example, a number like 09876543210 becomes +919876543210. Using this globally accepted format helps prevent errors, improves communication reliability, and ensures compatibility with modern apps, CRMs, and telecom systems.

Link: https://phonenumberwizard.com/phone-number-formatting/e164