Okay q800 has been used for 1 month so i can vouch for the built quality.The back panel has not received any scratches till now.The black matte finish looks great till now.The Screen quality is better than S advance which i have used also.Q700 was brought for my sister so i have hardly used it.The screen of Q700 is better than Q800 bcoz of OGS.Change your screenguard as soon as you recieve your phone for better touch experience.I found the touch less responsive in Q700 than my Q800.This issue might be because of poor screen guard not sure of it.
Q800 camera both front and back win hands down.The camera quality of q700 is much worse than Q800.Even images taken in low light in home were saturated in fully zoomed.If you are a person who loves to click images Q700 is not your choice than.I was able to record 1080p video on Q800 but Q700 failed.
The handset provided in both are of poor quality.The white one in q700 might look decent but the music suxx on it.Buy a decent one on ebay.Video player in q700 could not play a 1080p file.I have heard you can do it on mx player in software mode.Will try that out and confirm.But in built player did not play it.I have thrown a 1080p rip of 4 gb on my Q800 and it played it without any problem.The sync was perfect.The in built player was able to play 1080p but i still rooted my phone and removed it to keep mx player .
I can not comment about Q700 has i have not played anything on it and i dont think my sis wants to play anything except surfer and temple run.
On Q800 i have tried almost every heavy game i can try.Virtual tennis works completely smoothly on it without any lag.Alphat worked but it did heat up the phone after a while.You can run every mid level game on this gadget without any headache.The smooth touch response makes it a enjoyable experience in my opinion to play games which generally work on 20k+ Phones.
Q800 has much better call quality than Q700.The sound was decent on Q700 which wont create a problem in open places but say you are in a noisy traffic jam i am not sure it will be easy to hear the other side.I have travelled with Q800 on metro a lot and i can say i not faced any issues of call drop or anything.
Q700 interface was poor in comparison to Q800 which shocked me .The android version on q700 is 4.2 so the general belief was it would more user friendly build but to disappointment the notification bar is messed up with stupid stuff.You need to change the menu first in notification to go in settings like bluetooth which should work easily like swiping down and clicking on bluetooth icon but on q700 first you need to change the menu than you can access all icons like GPS,Bluetooth,Brightness etc.
Firstly issues faced on Q800
1:- I have noticed that my sim is not detected once in 2 weeks.This genrally happens when i leave my phone on charging in night and morning i detect that my sim is not being detected.To solve it i remove the sim and reinsert it.Than my sim is working again.
2:- The heatup of charger while charging worries me about how long the charger will work.It heat ups too much.
3:- Occasionally the headset icon on the screen does not go away when i remove my headset.I think it is the rom issue.
4:- The availability of pouches is still a concern for me.
Issues faced on Q700
1:- The sim i inserted was in 2 slot.After a while my sis told me she was not able to make calls.The error was no sis inserted/sim error.The network was also gone.Changed the slot to 1 and now it is working well till now which is not a long time.
Any other queries are welcomed i will answer .