Hi. i wonder how to perform a search based on exact Mobile / Phone

Currently this is my request to zoho v2 API:

1. request one

url:  https://www.zohoapis.com/crm/v2/Leads/search

params: {

      criteria: ((Mobile:equals:447834029972))

}

my request above is returning one data with exact phone number with my criteria, but when i reduce the number and change it like my criteria below: 

it still return the data like my first request, looks like the key "equals" doesn't work to return only the exact number like what i want in my criteria.

im also already try with phone params but still get the same result.

hope you guys have any advice how i can solve that.

thanks