Funny,My cheapy Nokia from T-mobil works in Temescal,Topanga,Tuna,Las Flores,Carbon,Crosscreek,& Coral Canyons at 1/2 power even,but it doesn't function too well in Baldwin hills or Hollywood hills(Mulholland) at full power & there are Cell towers on Mulholland/Cahuenga,Mulholland/405fwy!