Can't watch avi file which been emailed to me on iPhone

Hi, I've been sent an avi file video and don't have a computer. It's been sent to my yahoo email account but when I click it just appears as a grey screen with play icon in the middle but won't open. Any ideas what I can do. please help.
Thanks.

I didn't find the right solution from the internet.
References: http://ift.tt/2oVDNEL

Electric Vehicle Video Examples

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