I have this memory card are now half a year along with a K750i from Sony Ericsson in use. There were no problems so far. The mobile phone has detected the card and fast-formatted. After that, she was ready. The read-write speeds are limited, but this is more likely to be on the phone. I reach a writing speed of about 250kB / s, which roughly corresponds to the download speed of DSL2000. As already said the card is certainly capable of more. The mobile phone is the speed brake here. (A USB card adapter would the map about half speed USB 2.0 can reach).
But this card is sure. There was with me so far no data loss.
Conclusion:
Who wants to use his mobile phone as an MP3 player, can not ignore this expansion. The map is reliable, relatively quickly but also fragile. One should not keep changing the phone cards. With a huge memory size of 2GB but that should also be required rarely.
