421 service not available,closing control connection

421 service not available,closing control connection service not available是什么意思? 503-service not available? 请问503 Service not available Sorry,service is temporarily not available,please try again No connection available什么意思 苹果电话里突然出现sorry internet connection is not available right 求高手解决“This service is temporarily not available from your se The service is not available.Please try again later中文是? 美服cf的this service is not available in your region CF美服登陆提示 this service is not available in your region 怎么解决 service will be available soon