HINT 01
You’ll need to have accessed Jess’s mailbox to find the recovered messages.
HINT 02
Count how many messages were recovered.
HINT 03
One text chain is more suspicious than the others.
ANSWER
The recovered text messages are the same in quantity as the deleted messages from the text chain from phone number +44 7555 84257, and that’s the only phone conversation to have deleted messages, so that’s the number they come from.