▁+ ▁L AN ▁with ▁T . 3 8 , ▁USB , ▁w i - fi ▁optional ▁extra ). ▁The ▁devices , ▁distributed ▁through ▁US ▁vend ors ▁such ▁as ▁Wal mart , ▁New eg g ▁and ▁Amazon , ▁are ▁normally ▁sold ▁un locked ▁and ▁un config ured . ▁The ▁user ▁may ▁configure ▁log ins ▁for ▁multiple , ▁simultane ous ▁prov iders . ▁ ▁Ob ih ai ▁oper ates ▁its ▁own ▁pre config ured ▁O Bi T AL K ▁Vo IP ▁service ▁to ▁allow ▁direct ▁calling ▁between ▁its ▁brand ed ▁devices ▁( using ▁** 9 ▁and ▁a ▁nine - digit ▁serial ▁number ), ▁as ▁well ▁as ▁a ▁companion ▁O Bi ON ▁soft phone ▁app ▁for ▁Android ▁and ▁iPhone . ▁ ▁There ▁is ▁also ▁a ▁Service ▁Pro vider ▁Template ▁for ▁various ▁individual ▁prov iders ▁( such ▁as ▁An ve o ▁and ▁Phone ▁Power ) ▁built ▁into ▁the ▁current ▁generation ▁of ▁devices ; ▁earlier ▁devices ▁used ▁an ▁online ▁w izard ▁to ▁autom ate ▁the ▁configuration ▁process . ▁ ▁Google ▁Vo ice ▁support , ▁a ▁popular ▁feature ▁due ▁to ▁the ▁low ▁cost ▁of ▁service , ▁was ▁tempor arily ▁broken ▁when ▁that ▁service ▁dropped ▁X MP P ▁support ▁in ▁May ▁ 2 0 1 4 ▁and ▁officially ▁restored ▁in ▁September ▁ 2 0 1 4 . ▁It ▁was ▁again ▁broken ▁at ▁the ▁end ▁of ▁ 2 0 1 7 ▁for ▁O Bi 1 0 0 / 1 1 0 ▁devices ▁due ▁to ▁update ▁of ▁Google ▁certific ates ▁and ▁previous ▁end ▁of ▁support ▁of ▁Ob i 1 0 0 /