You need to install a PDF reader. PDF is copyrighted format. If it is an android device start the Google Play app to install adobe reader.
SOURCE: How do I unfreeze an android 4.4 kit Kat dual core tablet?
cold boot it .... or the reset.
google that. its covered on all android..
SOURCE: instruction manual for Tagital® T7X 7 Quad Core Android 4.4 KitKat Tablet PC
Tagital® T7X 7" Quad Core Android 4.4 KitKat Tablet PC ...
www.amazon.com/Tagital®-T7X.../B00RLEKHVA
Amazon.com, Inc.
Rating: 3.6 - ?132 reviews
Amazon.com : Tagital® T7X 7" Quad Core Android 4.4 KitKat Tablet PC, Bluetooth, Dual Camera, Play Store Pre-installed, 2015 Newest ... 1x User's Manual
Tagital® T7X 7" Quad Core Android 4.4 KitKat ... - YouTube
? 1:44
https://www.youtube.com/watch?v=bux7EbSlAKM
Aug 12, 2015 - Uploaded by Ritz Flash
4 GB Storage (Supports Micro SD card extension) Package: 1xTagital Android 4.4 Qual Core 7" Tablet 1x ...
Tagital® T7X 7? Quad Core Android 4.4 KitKat Ta
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