When crm is opened in chrome from mobile phone, instead of mobile url, its redirecting to standard url.
mobile url should be: https://<domain>.dynamics.com/m/eh.aspx?
where as its opening: https://<domain>.dynamics.com/main.aspx? in mobile
Try using Dynamics 365 for Phones instead of Google Chrome.
What mobile are you using and what is the OS?
The behaviour of CRM on phones is different when you run them through browsers.
Please refer to this url :
Business Applications communities