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判断是否为正确的手机号码

NSString *patternTel = @"^1[0-9]{10}$";

NSRegularExpression *TelExp = [NSRegularExpression regularExpressionWithPattern:patternTel options:NSRegularExpressionCaseInsensitive error:&err];

NSTextCheckingResult * isMatchTel = [TelExp firstMatchInString:mobileTf.text options:0 range:NSMakeRange(0, [mobileTf.text length])];