It stays some sentences not managed to be translated… By exemple, the “Search…” wich appears when you click on the “Search” button in the WPtouch menu. To solve this, you have just to modify the file wp-content/plugins/wptouch/themes/default/header.php and replace the line

<input type="text" value="Search..."
onfocus="if (this.value == "Search...")
{this.value = ''}" name="s" id="s" />

by

<input type="text" value="<?php _e('Search...', "wptouch"); ?>"
onfocus="if (this.value == "<?php _e('Search...', "wptouch"); ?>")
{this.value = ''}" name="s" id="s" />

If you see something else not properly translated in WPtouch, thanks to alert me !

Finaly, if you manage your website with more than one language, then I suggest that you modify the file wp-content/plugins/wptouch/themes/core/core-functions.php to update the SQL request below in the bnc_get_ordered_cat_list() function :

$sql = "select * from " . $table_prefix .
          "term_taxonomy inner join " . $table_prefix .
          "terms on " . $table_prefix .
          "term_taxonomy.term_id = " . $table_prefix .
          "terms.term_id where taxonomy =
          'category' order by count desc";

replaced by

$sql = "SELECT " . $table_prefix . "terms.term_id, count,
           CASE WHEN INSTR( name, '@' ) >0 THEN
           TRIM( LEFT( name, INSTR( name, '@' ) -1 ) ) ELSE
           TRIM( name ) END AS name FROM " . $table_prefix .
           "icl_translations INNER JOIN " . $table_prefix .
           "term_taxonomy ON " . $table_prefix .
           "term_taxonomy.term_taxonomy_id = " . $table_prefix .
           "icl_translations.element_id INNER JOIN " .
           $table_prefix . "terms ON " . $table_prefix .
           "term_taxonomy.term_id = " . $table_prefix .
           "terms.term_id WHERE element_type = 'category'
           AND taxonomy = 'category' AND
           language_code = '" . get_bloginfo('short_language') .
           "' ORDER BY count DESC";

Then your WPtouch “Category” will display only the categories for the current language…