Playstore won't allow me to log into my google account
If your galaxy s5 is rooted then you can fix this error by going into /system/etc and looking for a text file named hosts. Open it with any text editor and add this in front of 127.0.0.1, #, e.g., #127.0.0.1 localhost. If it doesn't work, delete all text from the hosts file and paste this: 127.0.0.1 localhost and save, then reboot. Hope this helps.