In my new becker Z203, apears the message "insert SD card" and I can't do anything else

Question edited for clarity.

This is always because people buy modern SD Cards that are far too bit for older cameras. The maximum size for an SD Card is 2GB. Also you must format the card inside the camera.

https://www.manualslib.com/manual/145868/Samsung-Sl202.html?page=86&term=SD+card&selected=1#manual

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Try formating the memory card using the camera's Menu - select format memory card.

sd card slot damaged. Change slot with new

Where are you formatting these cards? You're supposed to do them in the camera.

If there are sd card error, you cannot format your sd card. you may get messages like

"No SD memory card inserted" messages appears when using digital cameras,
"A media card hard been inserted that contains errors. Do you wish to repair the Media Card now?"
You can read the files on SD memory card, but you cannot write new files or you cannot edit files on SD memory card,
"Access denied", when SD card is corrupted or broken,

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you can fix sd memory card errors first and them format you sd card.

Yes flash memory can be corrupted and/or erased due to static charge or removal while powered.

perhaps your card is Locked...there should be a white tab on the side of it. check to see if it is in the locked position.

Good day,

This is a common problem that many people experience with their SD Cards.
It is normally an easy fix and you can follow a method that I posted on my tips here:

http://www.fixya.com/support/r7042428-sd_card_write_protect

Please feel free to let me know if this was helpful!

Regards

it will need to be smaller then 8gb...... also micro SD......... NOT micro SDHD .....you also need to format it using the phone (check user guide for info on how to do this)
hope this works for you .....good luck

does the sd card have a lock feature on it?