why HID touch device can works on android but can't work on IOS?nRF52832 ,ble_app_hids_keyboard example,SDK 13.0.0,s132

Question

hi, 
 I use 52832 to implement the HID touch device，It can works on android but can't works on IOS?why 
 //my report descritor
	static uint8_t report_map_data[] =
	{ 
 ///&#181;&#218;1&#184;&#246;&#181;&#227;
 0x05, 0x0d, // USAGE_PAGE (Digitizers) ///global item
 0x09, 0x04, // USAGE (Touch Screen) ///local item
 0xa1, 0x01, // COLLECTION (Application) ///main item
 
 0x85, 0x01, // REPORT_ID (Touch) ///local item ///report id ///data[0]
 
 0x09, 0x22, // USAGE (Finger) ///local item ???
 0xa1, 0x02, // COLLECTION (Logical) ///main item
 0x09, 0x42, // USAGE (Tip Switch) ///local item tip switch ???
 0x15, 0x00, // LOGICAL_MINIMUM (0) ///global item
 0x25, 0x01, // LOGICAL_MAXIMUM (1) ///global item
 0x75, 0x01, // REPORT_SIZE (1) ///global item
 0x95, 0x01, // REPORT_COUNT (1) ///global item
 0x81, 0x02, // INPUT (Data,Var,Abs) ///main item ///data[1]---bit1
 
 0x09, 0x32, // USAGE (In Range) ///local item
 0x81, 0x02, // INPUT (Data,Var,Abs) ///main item ///data[1]---bit2
 
 0x95, 0x06, // REPORT_COUNT (6) ///global item
 0x81, 0x03, // INPUT (Cnst,Ary,Abs) ///main item ///data[1]---bit7~bit3
 0x75, 0x08, // REPORT_SIZE (8) ///global item
 0x09, 0x51, // USAGE (Contact Identifier) ///local item 
 0x95, 0x01, // REPORT_COUNT (1) ///local item
 0x81, 0x02, // INPUT (Data,Var,Abs) ///main item ///data[2]
 
 0x05, 0x01, // USAGE_PAGE (Generic Desktop) ///global item
 0x15, 0x00, //LOGICAL_MINIMUM(0) ///global item /// .1
 0x26, 0xff, 0x0f, // LOGICAL_MAXIMUM (4095) ///global item /// .2 
 0x75, 0x10, // REPORT_SIZE (16) ///local item
 0x55, 0x00, // UNIT_EXPONENT (0) ///local item
 0x65, 0x00, // UNIT (None) ///local item
 0x09, 0x30, // USAGE (X) ///local item
 0x35, 0x00, // PHYSICAL_MINIMUM (0) ///global item
 0x46, 0xff, 0x0f,///18.11.30 // PHYSICAL_MAXIMUM (4095) ///global item ///1080///&#196;&#172;&#200;&#207;&#202;&#250;&#198;&#193;x///&#182;&#212;&#211;&#166;&#186;&#225;&#198;&#193;y
 0x81, 0x02, // INPUT (Data,Var,Abs) ///main item ///data[3] data[4]
 0x09, 0x31, // USAGE (Y) ///local item 
 0x26, 0xff, 0x0f,///18.11.30 ///2244///2244///&#196;&#172;&#200;&#207;&#202;&#250;&#198;&#193;y///&#182;&#212;&#211;&#166;&#186;&#225;&#198;&#193;x
 0x46, 0xff, 0x0f,///18.11.30
 0x81, 0x02, // INPUT (Data,Var,Abs) ///main item ///data[5] data[6]
 0xc0, // END_COLLECTION ///main item
	}
//send the report to app	
void AndroidHid_Notify_Key(ble_hids_t m_hids)
{
	ipRepVal[1] = TOUCH_DOWN; // down
	
	if (abs_hor < 10000)
	{
 abs_hor += 20;
 abs_ver += 20;
	} 
	else 
	{
 ipRepVal[1] = TOUCH_UP; // up
	}
	
	ipRepVal[0]=HID_TOUCH_RPT_ID;
	ipRepVal[2]=0x00;
	
	ipRepVal[3] = abs_hor%256;
	ipRepVal[4] = abs_hor/256;
	ipRepVal[5] = abs_ver%256;
	ipRepVal[6] = abs_ver/256;

	if (ipRepVal[1] == TOUCH_UP)
	{
 abs_hor = 0;
 abs_ver = 0;
	}
	
	ble_hids_inp_rep_send(&m_hids, 0, 7, ipRepVal); 
}