Use recovery software to recover iMessages
Are you looking to recover iMessages on your iPhone? The difference between text messages and iMessages is highlighted in your Messages app, by varying colours. General SMS text messages appear in green. They are messages that are transported through cellular towers and charged by your network provider.
Much like phone calls. iMessages are coloured blue and, represent Apple’s own instant messaging service.
iMessaging uses WiFi or your 3G/4G data connection, to send messages solely between iOS devices. They are sent much faster than text messages however if you do not have a WiFi connection, the service does use up your data. The primary difference between text messages and iMessages is whether they are sent using an internet connection, or through a cellular tower.