func isTelNumber(num:NSString)->Bool{    var mobile = "^1(3[0-9]|5[0-35-9]|8[025-9])\\d{8}$"    var  CM = "^1(34[0-8]|(3[5-9]|5[017-9]|8[278])\\d)\\d{7}$"    var  CU = "^1(3[0-2]|5[256]|8[56])\\d{8}$"    var  CT = "^1((33|53|8[09])[0-9]|349)\\d{7}$"    var regextestmobile = NSPredicate(format: "SELF MATCHES %@",mobile)    var regextestcm = NSPredicate(format: "SELF MATCHES %@",CM )    var regextestcu = NSPredicate(format: "SELF MATCHES %@" ,CU)    var regextestct = NSPredicate(format: "SELF MATCHES %@" ,CT)    if ((regextestmobile.evaluateWithObject(num) == true)        || (regextestcm.evaluateWithObject(num)  == true)        || (regextestct.evaluateWithObject(num) == true)        || (regextestcu.evaluateWithObject(num) == true))    {        return true    }    else    {        return false    }  }

　　引用：http://www.jianshu.com/p/734bf1464489