Go to “Settings” > “General” > “Spotlight Search” and turn on “Messages”, then enter the key words of the text messages in the Spotlight Search bar. You’ll notice that the text conversations you have already deleted on iPhone shows up!
Go to “Settings” > “General” > “Spotlight Search” and turn on “Messages”, then enter the key words of the text messages in the Spotlight Search bar. You’ll notice that the text conversations you have already deleted on iPhone shows up!