Known incompatible carriers

(Please note that often a phone carrier will have more than one Gateway, so even if your phone carrier does appear on this list, it is still possible that it will work through another gateway)

Country            Company                  Gateway              Prefix

Argentina Telefonica Movistar  
Austria T-Mobile Austria 43676
Bermuda Mobility  
Brazil Nextel  
Canada Fido / Microcell  
Canada Bell Canada  
Canada Telus  
Germany E-plus  
Germany Mannesmann Mobilefunk  
India Idea Cellular 9822
India Idea Cellular 9824
India Idea Cellular 9848
India BPL Mobile 919843
India BPL Mobile 9821
India BPL Mobile 9823
India BPL Mobile 9843
India BPL Mobile 9746
Ireland Meteor 1  
Japan AU by KDDI  
Malaysia Celcom 19
Russia SCS-900  
Russia Primtel  
Russia Uraltel  
Serbia and Montenegro Mobtel Srbija  
Slovenia Si Mobil  
USA Telus  
USA EinsteinPCS  
USA Cook Paging  
USA Satelindo GSM  
USA Cingular 5  
USA Cingular IM Plus/Bellsouth IPS  
USA Morris Wireless  
USA Clearnet  
USA Triton  
USA Unicel  
USA Centennial Wireless  
USA West Central Wireless