There are some additional pics at The Guardian (I cant paste them here):
Waltz was photographed checking Signal on his phone during cabinet meeting yesterday
On Wednesday, which turned out to be his final full day as Donald Trumps national security adviser, Mike Waltz was photographed checking Signal on his phone during a cabinet meeting by Evelyn Hockstein of Reuters,as the Daily Mail reporter Charlie Spiering first noted on X.
Given that Waltz was ousted for mistakenly adding the journalist Jeffrey Goldberg to a Signal chat group during which confidential military plans for strikes on Houthi rebels in Yemen were discussed by senior cabinet members, it is remarkable that he was still; using the messaging app yesterday, as he likely fought to save his job.
A close-up crop shows that Waltz had recent chats on his phone with: a Rubio, likely Marco Rubio, the secretary of state, in which he had written
fully there is time on Wednesday morning; someone named Witkoff, likely Steve Witkoff, the presidents envoy for Ukraine and the Middle East; a voice call to or from a Gabbard, likely Tulsi Gabbard, the director of national intelligence, early Wednesday. The chat list also shows that Waltz had sent a text message to vice-president JD Vance on Tuesday, in which the national security adviser had written, I have confirmation from my counterpart its turned off. The message to Vance is marked with two empty checks, meaning that it had been delivered to the vice-presidents device, but still had not been read or replied to by him as of Wednesday morning.
White House video of the cabinet meeting shows that the Reuters photographer was kneeling directly to the left of Waltz at one stage, so it would be hard to argue that he was anything but careless about keeping his messages to and from other senior officials private.
https://www.theguardian.com/us-news/live/2025/may/01/donald-trump-tariffs-immigration-economy-ukraine-us-politics-live-updates