Read large file data using buffered reader in android

hi i want to read large remote file into string using buffered reader.but i got half data of remote file.Please help to get full data of remote file.

BufferedReader reader = new BufferedReader(new InputStreamReader( inputstream),8*1024);

        StringBuilder sb = new StringBuilder(999999);
        String line;

        while ((line = reader.readLine()) != null) {
            Log.e("Line is ",line);
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
        Log.e("Content: ", sb.toString());