These devices are mainly used in the cameras in Phones and tablets. Used to store photos, videos and other information.
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Micro SD cards also known as TF or Trans Flash cards are usually found in Smart Phones and tablets as external storage. Used for photgraphs, video, downloads, etc.
There are two main types of problems we find with these devices, Logical and Physical.
A logical problem means that the Micro SD Card is still working, but the data on it is not accessible. The micro sd is recognised by the camera and the computer as normal but the data is not available.
Physical problems are much more serious. All of the components are integrated into a single device, there are no visible components such as NAND flash memory all that is visible are some gold coloured connectors and the black casing.
Up until recently, data recovery on micro sd cards has been a very difficult and time-consuming job. First a working unit of the exact same type had to be found and then analysed with expensive test equipment to find out the location of the connection points for the integrated memory. Once located, these wires were soldered to the SD Card and wired to an adapter to enable them to be read using standard NAND flash reading equipment.
The whole process involves an engineer preparing each memory card and the cost of recovery was very expensive, typically 1000 - 2000 GBP and in many cases beyond the value of a photos.
Since then for the most common type of Micro SD cards, we have had special adapters made that avoids the wiring process enabling us to read many of these devices quickly, bringing the cost down substantially and into the realm of standard memory card data recovery.