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From time to time i use a 3g Dongle to connect to the internet, the dongle in question is a Huawei e3131 what ive noticed is that the images it serves are compressed to a really low quality, (i can tell because when i visit the same website on wifi they are much crisper) this is obviously done to save band width, but im on a unlimited plan and have about 5mb download so its not needed.

Any idea how i can stop this happening ?

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  • It's possible your mobile provider is compressing the images as they travel through their servers. Nov 18, 2013 at 20:51
  • Try use tor network to connect to VPN
    – user956584
    Jan 12, 2014 at 15:59

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@MichaelFrank is right, a lot of providers use image compression for mobile networks and in addition have configured it badly.

Here is a citation from my answer over at StackOverflow on: Avoiding image compression on some 3G networks

Setting a no-cache header has stopped working on some providers like Vodafone Germany a few years ago.

Instead these providers offer a webinterface where you can adjust the settings yourself. For Vodafone Germany just go to performance.vodafone.de and you will be greeted with the basic settings dialogue, but you can also choose the option "expert settings" for a more fine grained control and advanced options.

Basic settings

Advanced settings

Links for different providers and countries or whole lists are very much welcome!

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