aria . ▁It ▁started ▁operating ▁in ▁November ▁ 2 0 0 5 , ▁receiving ▁a ▁G SM ▁operator ▁license ▁in ▁June ▁ 2 0 0 4 ▁and ▁an ▁U M TS ▁license ▁in ▁May ▁ 2 0 0 5 . ▁The ▁ 3 G ▁network ▁was ▁launched ▁in ▁April ▁ 2 0 0 7 . ▁The ▁company ▁is ▁owned ▁by ▁B TC ▁J SC . ▁ ▁viv atel ▁started ▁in ▁November ▁ 2 0 0 5 ▁with ▁extended ▁port folio ▁of ▁mobile ▁services ▁for ▁private ▁and ▁business ▁clients , ▁with ▁low ▁prices . ▁ ▁In ▁November ▁ 2 0 0 7 , ▁two ▁years ▁after ▁its ▁launch , ▁viv atel ▁has ▁reached ▁one ▁million ▁clients , ▁which ▁is ▁around ▁ 1 0 % ▁market ▁share . ▁ ▁viv atel ▁is ▁a ▁spons or ▁of ▁many ▁music - related ▁events : ▁the ▁concert s ▁of ▁R ih anna , ▁P ink , ▁IN X S ▁and ▁V aya ▁Con ▁Dios ▁in ▁Bulg aria , ▁music ▁award ▁shows ▁and ▁more . ▁It ▁also ▁spons ors ▁vol ley ball , ▁ice - sk ating , ▁street ball , ▁snow board ing , ▁electronic ▁sports ▁and ▁sport ▁events . ▁ ▁In ▁May ▁ 2 0 0 7 ▁American ▁International ▁Group ▁acquired ▁ 6 5 % ▁of ▁the ▁Bulgar ian ▁Tele communic ations ▁Company ▁and ▁viv atel ▁for ▁€ 1 . 0 8 ▁billion . ▁ ▁On ▁September ▁ 1 0 , ▁ 2 0 0 9 ▁viv atel ▁merged ▁with ▁the ▁parent ▁company ▁B TC ▁under ▁the