Codeigniter sessions not working CI v 3.1.7 in chrome mobile android

Do you discovered anything else about the problem? We're with the same problem here using CI 3.1.4. In our case, we testing on localhost and webhost and the problem occurs only in webhost. Others facts we discover:

• Android FF (like you said) and Safari (on iOS) works perfectly.
  
• The problem doesn't happen in case of incognito mode.
  
• If we clear all data from chrome in android configs > applications (not only cache, ALL data), the problem also doesn't happen.
  
• And, a little bit curious but, the problem occurs even if we try to login from a smartphone that never access the page before.
  

It's important remember that all the problem cases happened only on the web host.

If we discover anything else about the problem, I'll let you know.