embedded pdf not showing on Android devices

I use the following code on a page and it displays on Macs and PC ok. Different browsers. However, it doesn’t work on Android devices. It asks the user to login although this is not a protected page.

The code used is …

<object data=”http://www.my site/wp-content/uploads/xxxx.pdf” type=”application/pdf” width=”100%” height=2000px scrolling=”yes”>

or this works on Mac and PC too ..

<object data=”http://www.my site/wp-content/uploads/xxxx.pdf” width=”100%” height=2000px scrolling=”yes”>

Any advice appreciated.

Ritch

WordPress 3.9.1