Added validation for Cuba on isMobilePhone.
referred issue: #1761

Checklist

• PR contains only changes related; no stray files, etc.
• README updated (where applicable)
• Tests written (where applicable)

how to write regex for specific country, can you help me with that?

how to write regex for specific country, can you help me with that?

First you must look for information about the mobile phone format for specific country. For this you can read information in Wikipedia if there is or look for some official page from that country.
Then for the regex construction I recommend you read Regular expressions from MDN Web Docs and look how others regex was build. Finally you can test it on online tools like regex101.

I hope I've helped you.

how to write regex for specific country, can you help me with that?

First you must look for information about the mobile phone format for specific country. For this you can read information in Wikipedia if there is or look for some official page from that country. Then for the regex construction I recommend you read Regular expressions from MDN Web Docs and look how others regex was build. Finally you can test it on online tools like regex101.

I hope I've helped you.

thank you for helping me, I know what to do now....

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Thank you for PR @pasagedev
LGTM 🎉
Is your contribution related to hacktoberfest?

Yes! It's a hacktoberfest contribution.
Thank you so much.

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