I couldnt check online any data that could verify this, but i wanted to ask the members if they know if the SD card i bought is legitimate.

bought a SANDISK ULTRA [128GB] micro SD.

tried testing with 2 apps [h2test] and [fakeflashtest].

the results are as follows:

[h2test for microSD1]

Warning: Only 127907 of 128000 MByte tested.
The media is likely to be defective.
58.3 GByte OK (122279943 sectors)
66.6 GByte DATA LOST (139673593 sectors)
Details:66.5 GByte overwritten (139605376 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
33.3 MByte corrupted (68217 sectors)
1023.5 KByte aliased memory (2047 sectors)
First error at offset: 0x0000000e8667d000
Expected: 0x0000000e8667d000
Found: 0x205346544e9052eb
H2testw version 1.3
Reading speed: 17.8 MByte/s
H2testw v1.4

[from FAKEFLASHTEST]

FAKEFLASHTEST v1.1.2  [SSi]
DRIVE 1 -  124.9GiB Generic- SD/MMC/MS PRO         
FFT - Quick Size Test (destructive)
D:     (no label)    DRIVE 1 -  124.9GiB Generic- SD/MMC/MS PRO         

Writing marker blocks to drive 1
5% complete  - 0 min 57 sec  remaining
10% complete  - 1 min 21 sec  remaining
15% complete  - 1 min 25 sec  remaining
20% complete  - 1 min 20 sec  remaining
25% complete  - 1 min 9 sec  remaining
30% complete  - 1 min 1 sec  remaining
35% complete  - 0 min 58 sec  remaining
40% complete  - 0 min 54 sec  remaining
45% complete  - 0 min 49 sec  remaining
50% complete  - 0 min 48 sec  remaining
55% complete  - 0 min 45 sec  remaining
60% complete  - 0 min 42 sec  remaining
65% complete  - 0 min 38 sec  remaining
70% complete  - 0 min 33 sec  remaining
75% complete  - 0 min 28 sec  remaining
80% complete  - 0 min 23 sec  remaining
85% complete  - 0 min 18 sec  remaining
90% complete  - 0 min 12 sec  remaining
95% complete  - 0 min 6 sec  remaining
100% complete  - 0 min 1 sec remaining
Reading back marker blocks...
5% complete - 1 min 54 sec  remaining
10% complete - 1 min 48 sec  remaining
15% complete - 1 min 31 sec  remaining
20% complete - 1 min 28 sec  remaining
25% complete - 1 min 21 sec  remaining
30% complete - 1 min 13 sec  remaining
35% complete - 1 min 7 sec  remaining
40% complete - 0 min 59 sec  remaining
45% complete - 0 min 58 sec  remaining
50% complete - 0 min 53 sec  remaining
55% complete - 0 min 47 sec  remaining
60% complete - 0 min 43 sec  remaining
65% complete - 0 min 37 sec  remaining
70% complete - 0 min 33 sec  remaining
75% complete - 0 min 29 sec  remaining
80% complete - 0 min 23 sec  remaining
85% complete - 0 min 17 sec  remaining
90% complete - 0 min 11 sec  remaining
95% complete - 0 min 6 sec  remaining
Memory tested in blocks of 25600 sectors.

BAD MEMORY from sector 122510204 (59,819.4355MiB) to sector 262132604 (127,994.4355Mib)
Test took 233 seconds.

                         *** FAILED ***

DEVICE HAS DUPLICATE OR BAD BLOCKS!

Recommended maximum usable partition size: 59,806.9355Mib (approx. Last good Sector=122510204)

Unplug and re-connect the drive, then reformat it using Windows or RMPrepUSB.

===================

My question is, is it safe to assume i bought a fake micro SD?

and to members who've had a similar case, what micro SD brand did you purchase to avoid cases like this?