regex validation for phone number code example

Example 1: phone number regex

^[+]*[(]{0,1}[0-9]{1,4}[)]{0,1}[-\s\./0-9]*$

Example 2: regex pattern for mobile number

/^(\+\d{1,3}[- ]?)?\d{10}$/

Example 3: phone number regex

^[+0]{0,2}(91)?[0-9]{10}$