Hours Of Operations SIMPLE Mobile California Walnut 91789 SIMPLE Mobile Hours of Operation and Location in Walnut, CA 91789 4.8 - 126 votes 20677 Amar Rd, Walnut, CA 91789 (909) 598-6534 Get Directions SIMPLE Mobile Hours Category: Electronics Hours Hours may vary due to season or holiday reasons. For specific hours, please contact store directly. Map Explore WalnutView More Apparel TJ MaxxH & MRainbowJusticeCoach Sports 24 Hour FitnessFreestyleEvo Jewelry Avon Recommend For You Verizon Wireless Dollar Store Bally Champion Crossfit Deb Pavilions Stater Brothers Markets TJ Maxx Banfield Pet Hospital