Samsung Galaxy Tab S2 - 8 inch. Powerful, very nice screen, visible in sunlight - but use a hood.
Samsung Tab S2 has bloatware that is easily removed. I have only installed the DJI Go plus Litchi apps - so dedicated to the P3P. Works well connected to my cell's 'hotspot' so can use live maps etc. Has GPS.
No crashes so far with DJI Go or Litchi and over a dozen flights. Much better than the Samsung Galaxy S6 cell phone that I had been using (to much bloatware).
I also disabled the following, but if any android expert has any more items, please add to the list.
ANT radio service
ANT+Plugins Service
Briefing
Chrome
com.samsung.android.sdk.spenv10
com.sec.android.ofviewer
Configupdater
Drive
Excel
Galaxy Apps
Google App
Google Contacts Sync
Google Partner Setup
Google Play Music
Hangouts
Market Feedback Agent
MyScript Resource Manager
OneGrive
OneNote
PowerPoint
Samsung Billing
Samsung Gallaxy
Samsung Gallexy Life
SapaMonitor
Setup Wizard
Shot & More
Skype
Software update
Word
Youtube