A little background on myself, I am not a tech reviewer and I used the Flash 2 as my daily phone for 7 months now so I know a handful of ins and outs of the Flash 2 (by the way please don't confuse the Flash 2 from the Flash Plus 2, they are different phones). I will just list the pros and cons of the AF2 based from my 7 months of use. However, do note I don't use my phone as a media or gaming device because I have my tablet for such purpose and I don't have an SD Card on it. What I mostly look for in a phone is good battery life and good camera.
I am currently on MM version 1.8
Firstly, the main advantage of the AF2 is the smooth performance on every day tasks. Mostly attributed to having little bloatware and a near stock android build. Gaming, however, may not be as smooth on heavy games
Secondly, is the battery life. The battery is good but not great though. I can last for around 7 to 8 hours with regular to medium use before it hits the charger.
Third is the camera, the camera is the main selling point of the AF2. I do believe that the camera is comparable to the Galaxy S3 or S4 but the main quirks of the camera is the Autofocus. In broad daylight, sometimes it focus so fast then sometimes it just won't focus at all resulting in blurry photos
Fourth, and biggest pro is that the AF2 is sturdy. Yes, my AF2 has taken quite a beating from me. I couldn't count the times I've dropped it. My Af2 has no case but has tempered glass though.
The main con of the AF2 is the weak GPS. Even at high accuracy the GPS just randomly points out the wrong locations, then sometimes on Google maps the blue dot just moves around even when you are stationary.
Second, it has no fast charging. A battery with a 3,000mah capacity would have been better with Fast Charging though
For gamers, the screen is hard to press, so you'll have to press the screen harder. In the case of clash of clans, I find it a bit hard to deploy troops using two fingers. I can do it but it is not as easy unlike in my tablet. For non-gamers though this is probably not a big problem
Maybe some of you may note that the AF2 does not have a good speaker and admittedly it doesn't because the placement of the speaker (which is the rear) isn't the best either and the AF2's speaker is just small compared to the "boom sound" speakers of the expensive HTC one. It does not have the best screen like the expensive Samsung Galaxy S5 or S6 but for the price of the AF2 it is quite understandable that the AF2 may not have the best speaker or screen cause for a phone this cheap at this quality they will have to cut corners somewhere to bring down costs.
Camera Samples (No Filter)
Without playing Pokemon Go
I commute from Cainta to Makati for 2 to 3 hours, where I would mostly use my phone for data and hotspot and I will play games, surf web, watch vids, etc. on my tablet.After the commute the battery drops by 20% to 30% and when I get to the office, I keep my tablet on my locker and mainly use my phone for light browsing, messaging email, and little Clash of Clans during break time which would last for 5 to 7 more hours until the notification that battery is low pops up.
Battery if I play Pokemon Go
If I play Pokemon Go with my phone, data, hotspot, GPS also opened then battery will last for only 2 hours. This is because Pokemon Go is already a known battery drainer when you play it.
A little primer on gaming, I am not the heaviest gamer but I tried several games on the AF2 over the past months I have used the phone but as of now (Sept 25, 2016), I only have Clash of Clans installed and no other game:
Clash of Clans and Clash Royale
Both these games run without problems of the AF2.
Playing Pokemon Go stutters at times and have a little dropped frames but it is still good
NFS No Limits
Generally laggy but it is still playable. Actually NFS no limits is just so graphic intensive or the game is just not well optimized cause it lags even on my Shield K1
I have played a little NBA 2k17 on this device I did some quick games, definitely playable but I would prefer to play this game on my tablet for a bigger screen plus it is very graphic demanding and my phone warms up, so expect a significant drain in the battery and eventual stutters due to thermal throttling (reduction of CPU and GPU performance when the phone gets hot) when playing this game for long periods.
Although I don't use the speaker much but I do use it from time to time. I re-tested the speakers recently and found out that the speaker does crackle, only when set to high volumes. The most logical solution is turning down the volume to where it does not crackle anymore or best is to use an external bluetooth speaker especially if you intend to sound up a big room. I think somebody in the Flash 2 Facebook group has been fixing the speakers. I mean to the point of actually disassembling their Flash 2, I dunno if the Service Center can also do this though.
I hope this could help you in searching for another phone or deciding to buy the Flash 2 if you're in the market for a new phone. The Flash 2 may not be the best phone but it is still good phone for the price of 4,990.