... order, in North America, Central America,Caribbean and South America,GSM Network frequency is: 850/1900Mhz or Quadband 850/900/1800 ... ; while in Europe,Asia,Africa,Oceania and Middle east, GSM frequency is GSM 900/1800Mhz.General feature :Etross-8818 is a ... ) 14)Locking PIN/ Network (optional) Specifications:1.Air Interface Standard: GSM 900/1800 MHz Phase 2+2.Frequency Ranges:Transmission ReceptionGSM ...