While Signal has grown immensely in popularity since WhatsApp updated their privacy policy, the app is missing a number of key features, most notably the ability to manage automatic downloads. Previously, you couldn’t change how media was automatically downloaded within Signal, which could significantly increase data usage, especially if you were on a cellular plan on iOS.
Luckily, a new update released by the devs seems to fix this issue and even adds a new feature to reduce data usage when making calls through the app. Let’s take a look at how to control auto-downloads and data usage within calls on Signal, which should help you save some data within Signal.
Open Signal and tap your profile picture in the top right corner.
Now tap on 'Data & Storage'.