i use your model in both versions. the antennas are in place? same low speed per ethernet and wireless? you testet the speeds on the exact same place, phones with the Sim in it and than the router...

edit: i cant change the titel.. "SMS settings ineffective" was a bug in a earlier Firmware. the bugfixed firmware 060618 was NOT on the austrian tp-link Homepage! :mad: the other point "MR6400 sends...