How to Install a Memory Card in TeXet TM-4004 (Black)

One of the main advantages of TeXet TM-4004 (Black) is the support of memory cards in microSD format. This feature allows you to expand an internal storage with an external storage device. Installing an SD card on TeXet TM-4004 (Black) is quite easy, but some users still have difficulties. In addition, it is important not only to put the card, but also to configure it.

Inserting a memory card

Because the MicroSD card is very small and TeXet TM-4004 (Black) doesn't a slot, it can be difficult to locate the slot. Therefore, it is recommended to follow the instructions:

Inspect the case of the unit and locate the tray. It can usually be identified by a small hole nearby (just don't mistake it for a microphone). The tray also stands out slightly with its edges.
TeXet TM-4004 (Black) comes with a special staple to remove the tray. See if it's still in the phone's box. If not, you can use a needle of appropriate diameter. Insert the paper clip into the hole until you hear it click into place.
The slot will slide out at the same time as it clicks. It will only extend 10-20% automatically. Then pull it out fully.
Inspect the tray. It should have a special area for inserting the MicroSD card. As a rule, it is slightly larger than the SIM pad.
Place the memory card on it with the chip facing down according to the tray's design features.
Insert the tray until it clicks into place.

After following these steps, a notification should appear on your phone to install the external drive. Take your time to start using it, as preparations also need to be made.

Necessary actions before using

Although the memory card is ready to use after installation, we recommend formatting it before use. Use the following instructions to perform the operation:

Open the Android settings.
Go to "Storage".
Select the SD card to be used.
Press the "Format" button and confirm the action.

Please note that formatting the card erases all data. Therefore, do not fill the external drive before use.

Solving possible problems

Although there is nothing complicated about installing a memory card on TeXet TM-4004 (Black), various problems can arise during its use. The main one is that the phone does not see the SD card. There may be two reasons for this happening:

you have inserted a memory card with a larger capacity than your smartphone supports;
the memory card is defective.

In both cases, there is little or no chance of getting things right. But some actions are worth taking. Firstly, visit the manufacturer's website to find out how many memory cards TeXet TM-4004 (Black) supports. If it exceeds the limit, the smartphone won't be able to recognize it. If the capacity meets the criteria, then try connecting the external drive to your PC and format it via "This Computer".

The same applies if your TeXet TM-4004 (Black) first sees the drive, but stops recognizing it after a while. Unfortunately, the problem can only be solved by formatting, which erases all data.

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