The 4-digit codes precede a subscriber number (the equivalent to the final XXX-XXXX in U.S. numbers) length of 5 or 6. The 3-digit codes precede number lengths of 7. The 2-digit codes precede numbers of length 8. And 5-digit codes precede numbers with lengths of either 4 or 5. London phone number format, therefore, is (020)XXXX-XXXX.
For the Phone Number Check field I used a formula of: If (Length ( [Phone Number])=10, True, False) What this means is this checkbox field only checks when the phone number is specifically 10 digits long. Then you can set up a form rule which checks to see if that Phone Number Check field is checked and if it is not checked then you can set it
Example: In this example, we have used two inputs with different input types, one is a number type and the other is the date type. The minimum and maximum range of the number is from 1 to 100 and the dates are from 01-01-2020 to 01-01-2021.
E164 sets much stricter limits on the length of numbers: 1-3 for countries, and a maximum length of 15. This will not change any time soon, knowing the global telephony system. – Rich
However, in most countries, a mobile phone number is usually between 8 to 15 characters long, including the country code and the area code. The minimum length of a mobile phone number could be as short as 5 characters, and the maximum length could be up to 20 characters or more in some countries. Alan D'Aiello Jr.
Article. In the United States and other countries participating in NANP, the maximum length of a phone number is 10 digits. Internationally, phone lengths vary, but the ITU E.164 states that phone numbers around the globe are recommended to not be longer than 15 digits.
In most languages i am aware of, the actual regex for validating should be ^[0-9]{1,10}$; otherwise the matcher will also return positive matches if the to be validated number is part of a longer string.
given this i think the proper answer for a valid "internet" email address will be a minimum length of 4 (including . and @), and for an intranet a minimum length of 3 including the point. – Pedro Emilio Borrego Rached
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