Alphabets Accepted in Phone Number Field

Description:
While testing the Enatega Multivendor Customer App, I observed a critical issue where the phone number input field allows the entry of English alphabets. This poses a significant problem as phone numbers typically consist of numerical digits only, and accepting alphabets may lead to user errors and hinder the user experience.

Steps to Reproduce:
Open the Enatega Multivendor Customer App.
Navigate to the section where the phone number is entered (e.g., during registration or profile setup).
Attempt to enter English alphabets instead of numerical digits in the phone number field.

Expected Behavior:
The phone number input field should only allow the entry of numerical digits. An error message or validation prompt should be displayed if alphabets are entered.

Actual Behavior:
The phone number input field accepts English alphabets without providing any error or validation prompt.

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Activity

Start with the customer app's registration and profile phone-number entry points, then reproduce the issue by entering English alphabets. The work is done when the field accepts only numerical digits or provides the specified validation prompt for alphabetic input.