I own an LG G3 D851 (unlocked).
I have inserted my Koodo SIM card into the phone.
As far as I know, this phone has the compatible frequencies for the Koodo network.
I am able to send and receive calls and text messages no problem.
I set up my APN using the recommended settings for Android.
Now, I am able to connect to the LTE network - my signal bars are full, and "LTE" is displayed on my status bar. There are blinking up and down arrows.
However, when actually using the internet, my phone has no connection, in some circumstances.
It seems that whenever I turn on the Wifi for a period of time, then turn it off, the phone remains connected to the LTE network but cannot actually use the network - as evidenced by the "LTE" and blinking arrows in the status bar but webpages failing to load. After a few hours, the phone seems to spontaneously connect to the network and I can use the internet on the phone.
The phone also fails to send and receive picture messages when the internet cannot be accessed.
My SIM card is 2 months old.
What is the problem? How can I fix this?