First you will need to check the status of your whatsapp traial usage
open your whatsapp application and Option > About > Account Info
now ypu will see every thing about your account.
now you are ready to go. in doing this you will need to you have to do it when you only
have a day to your account expire or you can do it now if you want
1. Open your whatsapp and press Option >
About > Account Info > Option > Delete
Account
2. A page will be displayed telling you to enter
your mobile number and telling you what will
happen. As shown bellow. The fourth option is
what we are trying to get rid of.
* Delete All Your Whatsapp Service Payment
Information
3. Then press continue after you enter your
phone number and follow the next steps to
complete deletion.
4. Now trial is gone but you are no more on
whatsapp. Read on.
5. Open whatsapp back and register as normal
as you do before by entering and confirming
your phone number.
6. After succesfull registration, you get one more
year free. Check the status again as explained
above in the first place.
7. Thats all you need to do to get rid of the trial.
I'm very sure this really helps you
YOU CAN ALSO USE THE COMMENT BOX BELOW FOR US TO KNOW HOW IT WORK FOR YOU OR NOT.