Mobile Verification

Certified Senior Developer

Hi,

I am providing a text field for the user to enter his / her mobile number. Now I want to verify if it is a valid mobile number. 

Verifications are of type: 

1. If it contains all digits and no characters

2. If the length exceeds 9 digits 

3. If the user has added country code and so on

I can achieve all this using the regex match function. But the problem is I am publishing my application on portal and regex is not allowed on portals (it does not support regex ). Is there any other way to do the above verifications ? 

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