How to split a PDF file:
1. Launch PDF NOW app on your device. iPhone or ipad.
2. Go to the top menu of this app. Click more icon which look like a upside down >.
3. Click on the "Split" icon on toolbar.
4. Choose the PDF you want to split from your device. Or you can download it from your Google Drive and Dropbox before step 2.
5. Choose PDF pages you want to split. Click "Split" bottom again which is on the buttom of screen. VoilĂ , it's that simple.