registration code for metatrade se mobile

 
Hi

i just bought the registration code licensed.but i everytime i turn off metatrader se on my cell and turn it back on it keeps asking me to enter the code. Its really bothersome. Is there a way i can have so that i just enter the code one time and have it keep the code so that i dont have to reenter it again and again. Any help is much appreciated.

best regards,
DojiSan
 
Please, inform the number of build. Thank you.
 
version 4 build 205 mobile se version