1st Test:
- 8GB MicroSD supplied with the phone class 4:
SD card write (write): 1.7 MB / s
SD card read (read) 9.9 MB / s
- MicroSD 32GB Class 10 Mustang:
SD card write (write), 8.2 MB / s
SD card read (reading): 13.7 MB / s
2nd Test:
- 8GB MicroSD supplied with the phone class 4:
SD card write (write): 4.2 MB / s
SD card read (reading): 14.2 MB / s
- MicroSD 32GB Class 10 Mustang:
SD card write (write) 9.6 MB / s
SD card read (reading): 13.4 MB / s
Therefore, the Mustang is better write and is more stable.
However, reading is all that more ordinary ...
It remains a quality product, guaranteed for 10 years, which I recommend to save a few seconds, but not essential!