To help, my bv6000 no longer recognizes my SD card, even after formatting.
Can you help me please ?

Hi,

please try

a] different SD card
b] check & clean SD slot contacts in the phone

Maybe your card is "dead" ...
If your card is used like external storage,
Test your card on other device or on PC to see if it's OK or not.
Test an other "good" card into your BV6000 to see if problem come from your phone.

Alas, already test 2 cards; which have been recognized and
formatted in Fat32 on my pc and the BV6000 does not detect
them at all. One of the cards was in the BV6000 since I bought
it and it worked well and all of a sudden it is no longer
recognized by the phone.

You could try to format the card inside BV6000 like internal storage (second option) but i'm afraid your card reader have defect.

Alas, I have no access on the SD card on my BV6000.
I can not even format it with the phone. as you say,
it must be the drive of sd which must be old.

Thank for your help.

I plan to change phone in early next year, I will wait without the SD card.

Please write a type and brand of your microSD card.

I tested two cards, a goodisk 32 Gb micro SDXC U1 Class 10
and a Verbatim 32 Gb micro SDHC U1 Class 10

I have both BV6000 and BV6000S.
I have a Verbatim card same as yours and I can use it no problem in my BV6000 but in the BV6000S it will be seen but I get erroRs saying Apps have stopped working and screen goes blank if I try and format etc.
Strange thing is it used to work no problem in the BV6000S but after using it in something else it started causing the problems.
I have formatted it with Windows, with the BV6000, with a Doogee but still it causes problems as soon as I put it in the BV6000S.

I also have a Sandisk 32Gb and it works fine in both the BV6000 and the BV6000S.

The problem has suddenly appeared with the micro SD card Verbatim
which is in my BV6000 since I bought it and apart in my pc,
I did not put it in another phone.