For customer service assistance with regard to products and services offered by H2O Wireless. Esteemed customers may refer to given contact details: H2O Wireless Customer Service Phone Number:  1-800-643-4926 General Inquiries: 1-800-643-4926 Customers of H2O Wireless can also communicate their concerned by filling out Contact Form. For Online Assitance with regard to relevant questions, visit  H2O Wireless FAQ Page . To checkout H2O Wireless store in your vicinity, click on Store Locator . People also searched for Safety Net Wireless Customer Service Phone Number About H2O Wireless H2O Wireless is a well-known, non-contract wireless service provider, known to cater needs of customers with high quality and economical products and service. H2O Wireless specialises in offering domestic and international talk and text services, data, pay-per-use plans, along with phones from every major brand.