compare special characters like À with regular A

Question

In some languages there are letters like À, I saw that for table view sections the native iOS put À under the same section as A.
I wan

Answer 1

You can convert it first into regular alphabets and then compare.

NSString *originalStr = @"À béautiful day";
NSData *d = [originalStr dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *converted = [[NSString alloc] initWithData:d encoding:NSASCIIStringEncoding];