Data validation for all data entered

[nkakundwa]

GIVEN that the user is asked to enter a name, only letters should be allowed to be entered.
GIVEN that the user is asked to enter a phone number, only 10 number with the format of 07..... should be allowed to entered.

Acceptance Criteria

1. Display an in field notification saying, "Please enter only letters" if the user enters any other character in the "Name" field.
2. Display an in field notification saying, "Please enter a complete name" if the user enters one letter in the "Name" field.
3. Display an in field notification saying, "Please enter a valid phone number" if the user enters and number that is not in the format 07.......