The Deleted Text Message Reader lets you retrieve any deleted SMS messages from a SIM card. It’s actually a SIM reader plus software, but it’s still a pretty sneaky way to check up on your partner’s clandestine arrangements with the local bookmakers. £129.00.
Success varies depending on the phone type that the SIM was used in and the way in which the phone user manages their texts. Best results are obtained from SIMs where texts are regularly deleted. This is because the SIM fills with texts first, and any further texts are stored in the phone.