WhatsApp is rolling out a new update to iPhone users, which lets them queue up messages when they don’t have an internet connection.

Previously, WhatsApp for iOS would make users wait to regain web access before allowing them to hit the green send button. The app will now automatically fires off the queued messages as soon as a connection has been re-established.

The feature has been available on the Android version of WhatsApp for some time, and comes in particularly handy during train and tube journeys, when signal can be particularly patchy.

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Google’s recent update to its search app takes a similar approach, saving queries if you have bad signal and producing results when your internet connection returns.

The WhatsApp 2.17.1 update adds storage management and file-sharing improvements too.

The app has raised the limit on photo- and video-sharing from 10 files at a time to 30 files, as is again the case on Android, and users can also manage storage on a conversation-by-conversation level.

Settings > Data and Storage Usage > Storage Usage will take you to a screen that shows exactly how much space each of your chats takes up.