texting

From England,

hi, i my friend has just gone on holiday to the USA and has a tri-band phone, I think she has done the thing where you get all your calls diverted to her ans machine, but whenever i text it seems to deliever straight away, does it work the same way with text messages, as i find it hard ot believe that she has her phone on all the time. would i get a delievery report even if it was off?text mes