List of SIMPLE Mobile Stores in Castro Valley, CA Outlet Note Regular Brands SIMPLE Mobile California Castro Valley Rating 4.9 based on 90 votes Official Website http://www.simplemobile.com/ Products Phones Cell Phone Plans NameAddressPhone Name/Address/Phone SIMPLE Mobile outlet - Castro Valley 3667 Castro Valley Blvd (510) 538-1400 SIMPLE Mobile outlet - Castro Valley 3443 Castro Valley Blvd (510) 581-8636 SIMPLE Mobile outlet - Castro Valley 22269 Redwood Rd (510) 582-1284 People Also Viewed