iOS 7 contact number spaces are not spaces [duplicate]

Answer 1

I made a small adjustment to the poster's answer in case someone wants to maintain the + at the begining of the number.

I made this small adjustment if you want to keep the plus after removing the spaces.

 Boolean shouldAddPlus = NO;

 if([[phoneNumber substringToIndex:1] isEqualToString:@"+"])
    {
        shouldAddPlus = YES;
    }

 phoneNumber = [[phoneNumber componentsSeparatedByCharactersInSet:[[NSCharacterSet decimalDigitCharacterSet] invertedSet]] componentsJoinedByString:@""];

 if(shouldAddPlus)
    phoneNumber = [base stringByAppendingString:phoneNumber];