There are many reasons for us to get distracted during meetings, smartphones is one of them. It has become second nature to have a peek here and there, whilst busy with a meeting. Here are a few reasons why not to do this in a business meeting:
It is RUDE - Your attention is being bestowed somewhere else.
You'll Forget - You will not fully process information given to you.
If it's boring, don't go - Do not participate in something that is not beneficial to yourself.
A meeting with ZERO ideas - If you are mentally not present, there will be little if no functionality.
Your motivation is CORRECT - You might be doing yourself a service, but meetings should not be the time.
These are among the many reasons one should not check your phone during meetings. Personally, I do not think I would risk doing something like this. It screams "unprofessional" and rude, as mentioned above.
Sincerely,
Zinny