Verizon Wireless recently announced that 95% of the handsets used by its customers are GPS-enabled phones that let public-safety authorities determine the location of callers if the call is placed from an area with E911 capabilities. The company is offering its VoIP-based product, VoiceWing, to new customers in areas where E911 service is provided or in areas served by public-safety answering points that are not connected to the local wireline 911 system but agree to accept emergency calls from VoIP customers, in compliance with FCC rules, a Verizon Wireless spokesman said.