Why is Bing map so pixelated on phonegap ? (compared to Gmaps)

Question

I had to change fro Gmaps to Bing maps for perf reasons (Gmaps uses js intensively when BM uses silverlight which gives MUCH better results providing a native feeling). But to one issue fixed, I have a new one to solve ..

Why is bing map so pixelated on my app ? It's like if bing map was looking at the device-width resolution of 320px and not taking advantage of the sharpness of todays high res screens ? Am I missing something in Bing Maps configuration ? there is definitively an issue with dpi

I am using Bing Maps v7 with AJAX

Here is my meta tag:

<meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" />

Here is a comparision between BingM and Gmaps:

Thanks for your help

Answer 1

I believe this issue is that the viewport information is not scaling the tiles. I've heard adding the following before loading the map works well:

Microsoft.Maps.Globals.defaultTileSize = 128;