Site very slow in mobile device

Bijay Tamang asked on March 13, 2017 15:50


Since we are using bootstrap, we don't have a separate site for mobile devices thus same code/ configuration has been shared across the devices. What could be the reason the site is running very slow in mobile device?

Note: We are not getting this issue in desktop.



Recent Answers

Trevor Fayas answered on March 13, 2017 15:58

mobile speed differences can often just mean that on mobile i'ts on a slower connection (do you have slowness on mobile while on WIfi or only while on normal cell data?)

I would check to make sure that your images are optimized, you don't want it to take multiple megabytes to load a page while on mobile.

Next see how many requests are being made. Check the marketplace for the resource combiners so you can combine all your CSS and Javascript calls into 1 call, that can help speed things up since a browser can only have 5 open downloads at a time per domain, so if you have 100 requests it can take a bit.

Lastly is a mobile phone can have less memory and processing power, which can be hurt by a lot of javascript, but this is rarely the case.

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Bijay Tamang answered on March 13, 2017 16:10

Hi Trevor,

Thank you for your reply. Actually we don't have much custom CSS/JS in our application. There are two portals in our project. One is built in Kentico and the other has some different framework. In desktop, the site built in kentico is way faster than the other portal whereas in mobile device, the case is just opposite.

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Peter Mogilnitski answered on March 13, 2017 16:10 (last edited on March 13, 2017 16:25)

Is TTF (time to first byte) on your mobile device different from TTF on your desktop? If not then it is a question of images sizes and number of requests.

P.S. Just in case check settings->content-> content management-> mobile development Make sure that everything is off.

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