How to increase wordpress file upload size for site migration

Hello,
I am new to amazon aws service, so please dont mind if my question is too neive.
I wanted to migrate my old Wordpress site to amazon was. I installed a bitnami Wordpress and configured domains and https. Now I want to upload my backup file through 'all in one wp migration' plug-in. However, I am only allowed to upload 80 mb file maximum.
I searched the net for solution and updated the php.ini file accordingly. Also restarted the apache server.
But still the values remain at 80 MB. Any help will be greatly appreciated.

Regards,
DipG