1. Usage of meta tag
iOS

2. Text content of body in html page
without meta tag
"Hello world!" is displayed like
this when we're not using meta
tag.

3. Text content of body with meta tag
Text displayed normally when
using meta tag

4. Meta tag customization
Android

5. Same HTML page in Android
emulator (without meta tag)
If no meta tag is used, HTML
page will look like this.

6. using "width = device-width" in
content
device-width: Measures width
in device pixels
width : Measures width in
CSS pixels
Zooming in web page affects
CSS pixels, not device pixels.

7. Removed width from content
Removed width from content

8. user-scalable = yes
By setting user-scalable
to yes

9. user-scalable = no
By setting user-scalable
to no

10. Different values of target-densitydpi
target-densitydpi varies
from 70-400

11. 240 320 360

12. Maximum target-densitydpi is 400
Below 70 & Above 400 will look like this

13. using "low-dpi" in using "medium-dpi" in using "high-dpi" in
target-densitydpi target-densitydpi target-densitydpi