This means that the product has been returned within the return period and has been inspected by us. Accordingly, it has been individually declared as new, unless it is explicitly noted on the product if there are signs of use. This also applies to the accessories (battery etc).
Single Sim has a separate slot for the SD. Dual Sim has the option for 2 SIMs or 1 SIM and 1 SD. There is a hack that allows you to add 2 SIMs and 1 SD, but you have to tinker a bit.
https://www.reddit.com/r/lgg6/comments/6euti7/can_the_dual_sim_g6_version_take_a_sd_card_at_the/
Hello
I've had the phone for a few months now, so here's what I can say:
The device got warm quickly in the last few weeks, yes, but that was mainly due to the outside temperatures of a good 30 degrees, as every device gets warm. At "normal" temperatures, I only notice the warming at maximum screen brightness. (I always have Bluetooth, mobile data and location on).
In your case, it might be because you have an app with a short refresh interval, e.g. Facebook (running constantly in the background).
Here is the XDA thread about it: https://forum.xda-developers.com/lg-g6/help/lg-g6-heating-t3600242
And an app that might help a little: https://play.google.com/store/apps/details?id=com.yanyan.cputemp&referrer=utm_source%3DAndroidPIT%26utm_medium%3DAndroidPIT%26utm_campaign%3DAndroidPIT