Two guides, one of GSM-One and 5Extrablätter, already reveal the problems of other buyers. Neither showed my home screen. So was tried, after 5 attempts then the remote controls could be detected. The rest went in relation to start fairly easy. It exchanged many SMS. In another review I had read 120th As far as they were not. With 20 per SIM card to be reckoned with but. Had only for installing 2 cards taken from the same owner, is often cheaper. Then you can change the master number. Important ongoing SMS dispatch is the on / off switch off. Not in the instructions # 137 # 0 #. Thus, the major cost factor is turned off. The range of the remote control is short, 6m at free sight. The hand-held transmitter shown here with smaller antenna have given way to new metal frame without antenna. This framework should probably replace the antenna. The new see at least better. The functions can be very easily set thanks to many Einstellmöglickeiten. The shots in the dark are good. The many ways of alerting bring an affordable solution for everyone.