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The Telephonic field displays +44 as the default phone code, which can be changed as per your need
The complete contact number is now saved under the contact profile.
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Steps
Click Create in the top menu
Select More Options
Select Contact Form
You arrive on that Custom Form’s Manage Fields page
Give it a name
From here you can click Create a Field or question to create a new field
There is a filter called Telephone Number which lets you filter to see the fields of the Telephone type.
Once you have selected the Telephone Number Type Field, it appears on the right
You can press the Remove button to remove it or the arrows to change the order of the Telephone Field