The name of this device is Dekart SIM Card Reader and off it's really quite affordable at only $33.00. Here's how it works. You simply remove the SIM card from a cell phone and insert it into one end of the device. Then you plug the other end into your computer's USB port.
The software that comes with this handy gadget will make it possible to download all of the information that is stored on the SIM card to your computer. Note that you may have to use SIM card data recovery software to retrieve text messages that have been deleted. It's also worth pointing out that if your phone doesn't store text messages to the SIM card, this device won't work for retrieving the deleted messages.
If you have the need to recover deleted text messages, you really can't afford to be without one of these devices. Buy one today!
Read Deleted Text Messages The "Stealthy Way"
If you want to be stealthy when it comes to recovering deleted text messages, you may choose to install a special app on the phone that is undetectable to the cell phone user. This app will allow you to track the phone using GPS but it will also provide you a detailed log of all the text messages that were sent from the phone and all the text messages that were sent to the phone.
Not only will it tell you what numbers the text messages were associated with, it will tell you EVERYTHING that was said in the text!