Durring configuration, show the size of the files for download

Components

Rocket chat is one of the leading open source team chat solutions. It provides alternative to Slack.
Rocket chat offers video and audio conferencing, file sharing, screen sharing, Live chat, 2FA and other services.
Rocket chat offers web, desktop and mobile versions. This suggestion is on the mobile version of rocket chat.

Proposal

i propose that during configuration of this app, at the point were it has to download some file to complete the configuration, the size of the files to be downloaded should be shown via a warning popup box, and should give you the option to continue or cancel just in case one do not have or do not want to spear the data size to be downloaded. (see pic 1) and also if one mistakenly press continue/download, there should be a stop download button too in the download interface. (see pic 2)

Mockups / Examples

Benefits

this feature will help users know the number of data the download will cost then and then chose if the want to proceed with the said download or cancel such download.
it will also avoid wastage of data in the case were ones data isn't up to the size of the files to be downloaded, then the download ends up stopping on the way because of insufficient mobile data.