Mobile Perspective App numeric entry field focus

I am working on a perspective view designed to be used on the mobile app.
The view consists of a Carousel containing views composed by a label and a numeric entry field.
Outsied the Carousel there is a button that simply gathers all the values of the numeri entry fields of the views in the carousel and sends them to the database.
Im having an issue saving correctly the last value of the Carousel, if i dont touch outside of the numeric entry field before clicking save the value i typed in would not be saved.
I tried it on the broswer and made the button gain the focus before saving to the database, and it works on the browser version but not on the mobile one.
Is there a solution to this problem?
Here is a sample of my view.