Delco Verizon, MCI wireless customers may experience problems calling 911. Walter Perez has more on Action News at 11 p.m. on April 28, 2019.Delaware County Verizon and MCI wireless customers may be experiencing problems with calling 911 on Sunday night, officials tell Action News.Crews are working to resolve the issue. If you are unable to reach the 911 Center, please direct dial the Communications Center: 610 565-6500 Report a correction or typo