I know that you are so excited to play Pokemon Go, but just a heads up: rooted devices aren't able to. If your device restricts data usage, then it can cause the inability to authenticate in this popular app that has become an international sensation. Restricted Data UsageĪs you know, Pokemon Go is a massive game, and it also consumes a lot of mobile data to operate. If this sounds like something that could potentially have been happening to you all along, my suggestion would be to disable the VPN while playing Pokemon Go. The VPN makes the connection suspicious, which then prevents your device from accessing certain websites and apps as well as might prevent Pokemon GO from authenticating altogether. When connected with an insecure network, there's always some chance of being compromised by potential hackers or malware-regardless if you're at home or out in public. Have you installed a VPN on your mobile phone, and it is still running in the background? This can be the major reason for Pokemon Go unable to authenticate error.

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