1. SLOW CHARGING
The charging speed on the poco has reduced due to thermal throttling. As soon as the battery temperature hits 37, the speed drastically reduces. I can confirm this and i have extensively tested it. I put my poco in front of an air conditioner which reduced battery temperature and the charging bumped upto 2700-2800mah.
Now thermal throttling is good(Especially since its summer season in India) but they should increase a thresholds a bit. My brother used a Asus Zenfone5z and my dad uses a Galaxy S10. On both these sets the charging throttling is not so harsh.
The narrow tolerance range of temperature while charging has lead to extremely bad charging times. This needs to be fixed.
2. Audio Issues ( Especially PUBG)
Try wearing earphones while playing PUBG in a poco and in a different phone. You will instantly notice how muffled/low the sound is in poco. You can barely make out the direction from which the footsteps are coming or the gunshots are being fired. I never realized this untill i played PUBG while wearing earphones in other cellphones. The sound in poco earphones is extremely low. I am not talking about songs in which case the sound loudness seems to be fine. This is mostly the case while playing games.
3. Speakerphone Loudness
I swear the speakerphone loudness had decreased over time. The poco was plenty loud at the start. Now the main speaker loudness just sucks. Whether its watching youtube, netflix or anything else. They have definitely decreased audio volume. Speaker generates considerable amount of heat. Try watching a movie which is already downloaded on your cell and after sometime you will notice that the hottest area to touch of the whole phone is around the main speaker(and not the cpu or gpu).
This makes me wonder whether the main speaker quality was bad right from the start and Xiaomi actually lowered volume to help avoid any issues. In any case, watching youtube is not as fun as before due to low sounding speaker now.
4.Touch Screen Issues
Well what to say about this. I mean there are tons of thread about this already. Xiaomi just release new touch drivers in Miui beta 9.5.6. This means they are still trying to fix touch issues even after almost 9 months of launch. Whether it is multi touch, ghost touch or missed touches. Poco has it all.
The reason is simple. Poor quality touch sensor. Its a hardware issue. Poco had to cut corners somewhere and the touchscreen was the component which took a big hit. The display quality of poco is general is also not good. But i am not complaining due to what all the poco gives at the price point it sit in.
But the touch sensor should not have been compromised with. This is something unacceptable. The general usage experience of the poco due to touch issues is really bad. It frustrates me daily. I have tried tons of custom firmwares too. But then the issue has to be fixed(if at all it can be ever fixed) through vendor firmware. Custom roms or kernels will never fix it. The most major issue of Poco f1-----------still unfixed----its terrible touchscreen.
5. Auto Rotation
I am not sure if many people have noticed this but the auto rotation while using youtube is extremely bad. This is something i won't be able to explain properly but can say this that i am sure many of you find the auto rotation in youtube not to be a seamless experience. This is not the case in other phones.
The accelerometer in general works fine. So i am mostly sure that this must be a software optimization issue.
6. No 4g+ Vodafone
I don't know whats the deal here but poco will never catch 4g+ in Vodafone. At the same spot other phones from nokia, samsung etc does but poco does not. My poco catches 4g+ in Jio but not Vodafone. No matter the spot, the finding remains the same. How can two different manufacturers produce two different results at the same spot even when both the sets in question have lte advanced capability.
I can only assume that there must be some internal issue between xiaomi and Vodafone due to which poco does not support 4g+ in Vodafone. If any1 reading this post has latched onto Vodafone 4g+ successfuly while using a poco please let us know.
Using POCO F1 64GB/6GB Indian variant running Miui Global Beta 9.5.17. These issues have persisted through both stable and beta builds and i have tried all.