Well you can make use of a PDF editor like Wondershare PDFelement in order to electronically fill a PDF form. Using PDFelement for PDF form filling is an easy process and you can quickly perform the same with the help of following steps on your iPhone or iPad. Open Wondershare PDFelement app on your iPad/iPhone. You will then see the list of documents under local section. Simply open the PDF form that you want to fill by tapping on it. Once the PDF form is open, you need to click on the “Text Box” icon. This will enable you to enter the text in blank fields of the PDF form. Once you are done with the form filling, click on “Save” icon to save the filled up PDF form.
After you are done, click the 'send the file' button to get one that you can give to your loved ones.