What i like about 6a:
1. good camera for the price. the quality itself isn't amazing if you pixel peep since it's an ancient sensor, but google's colour processing is really reliable in daylight, even compared to newer iphones imo. no useless macro camera here too, just an above average ultra wide (minor drawback is just that it's not the widest). see the consistent colours here too. but low light is just average. night sight can only do so much on an old sensor. it's usable, but don't expect too much. tends to get camera shake easier and slightly green-ish (w/night sight). but at below 400 (350 if your fingers fast last night), it's unbeatable.
2. hardware feels nice. plastic, but plastic feels solid. metal frame too. design is nice, has IP67, stereo speakers. again, nice to have for 450 phone (like A52S), but unbeatable at below 400.
3. good performance for the price. tensor has power to spare for sure if you look at benchmarks, and it's great for just day to day use and lighter usage (i was on 4G though, not sure if this will change with 5G). battery life was okay for me too with lighter usage. but throw anything more demanding at it, and it falls apart. it heats up too quickly, and too much. genshin medium graphics 60fps, can barely maintain 60 for a minute before throttling. In more complicated scenes like in combat, can even drop to below 30FPS.
a short 10+ mins clip i took while playing genshin
even simpler games like MLBB. at high refresh rate 60fps and high graphics (1 level below "ultra"), just 1 game was enough to significantly heat up the device. like you feel the heat from the metal frame all round the phone. it's bad. even at the lowest "smooth" graphics, just 1 game will noticeably heat the phone up. In comparison, i still have a SD855 phone which can run the game just as smoothly at that graphics and barely heats up.
(left side is the built in FPS counter on android 13, saw as low as 21FPS LOL)
TLDR, it's good for day to day use, and probably unbeatable at the lowest 350SGD price, but for anything more demanding the OnePlus Ace/10R (which you can get at around 400SGD on qoo10 now) with Dimensity 8100 chip will run circles around Tensor without breaking a sweat. This is based on personal experience with both devices.
what i don't like about the 6a:
1. the screen. it's bullsh!t at 749 SGD, acceptable at 400, and maybe good for a 350 phone. it's not just the 60Hz (which i don't really mind), but the panel itself. brightness is fine, but colours are still inconsistent probably because they are using cheaper panel. my unit has slight uneven tint with top 80-85% being slightly greenish and the rest being slightly pinkish. it's not that noticeable just on its own, but if you have a phone with good colours, and you are the type that tends to notice such things like me, it might be a bit annoying. so even at 400, it's just barely acceptable to me. the OnePlus Ace despite using a Chinese made OLED panel looks noticeably better to me in terms of colour, consistency, and it has 120Hz.
this is extra annoying since i've personally encountered this to a more serious extent on the pixel 2xl, pixel 3, pixel 3a, 3a XL. and smaller extent on the pixel 4.
another thing which is 50/50 for me is the fingerprint sensor. there was the debacle about unregistered finger being able to unlock the phone too, but didn't notice it for me. hell, even with my registered finger once in a while it'll take a few tries to unlock, let alone unregistered. LOL.
(my totally guessed theory is that maybe just after setting up the phone and fingerprint the phone will have a short learning process where it'll be a bit less "strict" with how closely the fingerprints has to match. then over time once it has gotten a good model then it becomes more strict.)
it's not the fastest too. so OnePlus Ace's fingerprint sensor is just faster and more reliable. The only thing i like is that the position of the sensor is higher than most other phones I've used, which makes it way more comfortable to reach.