Thanks for reaching out to Joform Support. If you've already installed the Jotform app on your mobile device, open it and follow the instructions below.
Open the Jotform App and it should show the list of the forms you've created.
Select the form you want to edit. It should show the list of options that you want to do with the form.
Select the Edit from the options. The form builder will load up and it looks similar if you're editing or creating forms on ina desktop or a laptop computer.
Click on the Settings tab.
Select the Form Settings.
Click on the Shor More Options button.
Enter your desired Form Title.
Scroll down and locate the Page Title. Enter your desired page title of your form.
Give it a try and reach out again if you have any other questions.