Numbers format

All numbers should be submitted in E.164 format.

For example,
UK number
Number: 020 3151 7488
E.164 format: 442031517488

US number
Number: 020 7267 8111
E.164 format: 12072678111

We recommend using Google's phone library to change numbers from local to international format.


Formatting German numbers

Germany has a varied number length, it's easy to accidentally create +4949 type of numbers when using Google's phone library.

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