[G2 Q&A, Help & Troubleshooting] polaric:
1- when filling 5 screens with icons and widgets, does it become laggy swiping between screens!? Does the overall performance get affected!?

I have 6 pages, two of which are widgets, Ive noticed no lag at all.

2- following the above, does the launcher have any redraws when pressing home button like htc sense or touchwiz!?

I haven't seen it myself.

3- how do you compare the smoothness of the overall experience compared to pure android?! Is it smooth in general!?

I've run stock, cleanrom, and cyanogen on this. Stock is a little ram hungry, but as far as stock goes, it's butter smooth.

4- how do you compare opening apps speed and responsiveness of the whole system!? My nexus 4 is amazingly fast and responsive.

G2 is a beast, opening apps is instant for me.

5- when typing a text, do wrongly written words get underlined by zigzag red line like in pure android or like on windows Microsoft word?! (Automatic and live spelling check)

I'm looking at them now, yes.

6- does the system lag heavily when opening contacts/people app like it happens on touchwiz?! (Of course when having a lot of contacts synced with a lot of accounts)

I can't say that I could tell, I only have 60 contacts.

7- does scrolling in messaging app lags heavily if you have like 1000 sms?!

If you first start the app there is a .5 second jitter, but its smooth after.

8- in phone app, can you swipe from keys page to call log to favorites page like in nexus, or you will have to pick the tab manually on the top of the page?!

Yep, you can swipe.

9- also can you swipe between different apps ins settings or i will have to reach top of screen like in touchwiz?!

I use list mode.

10- can i have list settings view instead of tabbed view on international D802 version?!

Settings app has a setting for this.

11- does calling keypad have smart dialling?!

Yep, I saw a reference to it in settings.

12- can i install dashclock on default screen of the default lockscreen?! Or i have to use the stupid provided one like on the note 3?!

I never tried, but I had no issues with custom widgets yet.

13- how much free RAM you got when you bought the phone new and it had no apps?!

Probably the worst thing about this phone, Verizon had cluttered it bad, and the stock is a bit ram hungry, ~700mb was used.

14- how much free RAM you have now (of course after closing all background apps by swiping them from recents) but installing a lot of apps that needs RAM?! ( chrome, whatsapp, viber, tango, skype, facebook, g+, avast, etc...)

I'm running Cyanogen now, mine is significantly lower, but I'd guess ~400

15- does the system goes laggy when low on RAM like what happened on touchwiz and sense?!

I've never gotten low on ram, but I doubt it.

16- does the phone goes very hot when playing heavy games for like 30min?! How much in temperature?! Is it like the nexus 4 or worse?!

Its cool to the touch for me.

17- is there is currently a MOD that allows running any app in Qslide mode like what happened with Spen window on note series?!

I wouldn't know, I'm using cyanogen now.

18- Is video recording that bad like it is said in many youtube videos?! Does it have really a hard time focusing?!

Better than my friend's iPhone 5S. Quality is great.

Hope this helps you, I'm loving the G2

Sent from my awesome VZW LG G2