ITSmobile service freeze screen in MC9090G

Question

Hi experts,
    i have e big problem here ..:
Description.:
    One program X , ITSmobil it´s public ok.  test via ie(internet explorer) in desktop  ok.
     Same  service test in  a MC9090 ,and  screen freeze (white screen).
   Steps
u2022     login a service.
u2022     Press a button ,  the program send  W message  via sy-msgid sy-....
This action  in a desktop  repeat  many times and no problem. Same action repeat in MC9090 2 times and the screen´s lock/freeze
Details:
    Device :  motorola MC9090 software MC9000 series.
            OSVersion:05.00.1400
               OEM name : SYMBOL MC9090G
               OEM version: 01.35.0000
CPU: 624Mhz
BUS Clk :208Mhz
SDRAM Clk : 104Mhz
RAM size: 64MB
Storage 25Mb
System : Windows CE V 5.00(Build 1400)
Storage Memory:
       14912kb total
        14888Kb in use
Program memory
       46976Kb Total
       12440Kb in use, before run  service.
SAP: kernel  relase 701 SUPpkg 145
Any  idea to coming a solution..
best regards.

Answer 1

More info.:
SICF configuration
GUI
~TRANSACTION  =  YSLABITS
~THEME              =   99
~ITSMOBILE        =   1
~ITSMOBILEMSGSOUND  = 1
system logon  conf
Actions durin logon
Protocol  : Do not switch
Do not display warnings (checked)
Check multiple logons    (checked)
Support Accessibilty       (checked)
simple test program.:
create pool  SE80.  one dynpro,
three buttons
case ok_code.
  when 'BTN01'.
  w_cnt = w_cnt + 1.
  S_cnt = I_cnt = 0.
  SY-MSGID = 'ZM'.
  SY-MSGTY = 'W' .
  SY-MSGNO = '000'.
  SY-MSGV1 = 'this is a W message'.
  SY-MSGV2 = w_cnt.
  when 'BTN02'.
   S_cnt = S_cnt + 1.
   w_cnt = I_cnt = 0.
   SY-MSGID = 'ZM'.
  SY-MSGTY = 'S' .
  SY-MSGNO = '000'.
  SY-MSGV1 = 'this is a S message'.
  SY-MSGV2 = S_cnt.
  when 'BTN03'.
   I_cnt = I_cnt + 1.
   w_cnt = S_cnt = 0.
   SY-MSGID = 'ZM'.
   SY-MSGTY = 'I' .
   SY-MSGNO = '000'.
   SY-MSGV1 = 'this is a I message'.
   SY-MSGV2 = I_cnt.
   when others.
     clear :  I_cnt, w_cnt , S_cnt ,
     SY-MSGID , SY-MSGTY, SY-MSGNO ,  SY-MSGV1 , SY-MSGV2 .
     endcase.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
   endmodule.                 " USER_COMMAND