Allow phone & FAX values as below

[Raj2014]

Auto format the phone & fax numbers[ Same as above screenshot ]

[AJ_vizMan]

Hi @Raj2014  - There is similar post already, take a look

Solved: Formatting Phone Number i.e (###)-###-### - Power Platform Community (microsoft.com)

Matthew Devaney has written a nice blog post on this -

Power Apps Phone Number Formatting In A Form (Input Mask) (matthewdevaney.com)

[Raj2014]

Hello @AJ_vizMan 

I checked the above link I followed all the steps.
But its not working 

[Raj2014]

Hello @AJ_vizMan ,

I tried with above code if you try enter on 9 digit the value is resetting

If I typed the above number the values are resting to