APN setting is disappear

[aluloli]

please help , i can't find my apn setting for Mobile network

This happend after i tried to change to 4G , and now i want to turn back use 3G setting..
FYI : I'm using lollipop android now

 

[ptonantryloc]

I'm not sure if your just asking where the settings are or if your settings are actually missing. But, as for where the settings are, go to the phone's Settings | More (in the first group of things) | Cellular Networks | Access Point Names. Hope that's what you're looking for.