Hey, I asked that question already about 2 months ago, and it is deleted actually without a solution. I had the problem, that I got no answer for gps query by sms on RUT850. Sms with „status“ is working. I‘m a little bit disappointed. Can‘t be such a big problem!
logfile says: unsupported gps query
I don‘t want to be inpolite, but this function was one reason to buy this device!