[OnePlus 7 Guides, News, & Discussion] Hem981:
Hello,

Recently i upgraded my OnePlus 7 to OxygenOS 11 via OTA, and here is a list of a few annoying bugs(features?) that you'll need to know before upgrading:

(Note: I performed hard reset after upgrading, so any bugs here will be persistent and not because of some fixable issues, unless you are rooted/want to use adb maybe?)

(Also, this is the stock OOS 11, not rooted, and no modifications)

1) I'm not sure if it's just me, but the device heats up much faster. Though the temperatures here are high, I tried to maintain as close to a lab condition as possible, maintaining 30C ambient temp. Evaluation was done with a session of Call of Duty Mobile, and Youtube 4K video loopback test. Avg temps are: CODM : OOS 10: 41C, OOS 11: 45C, Youtube: OOS 10: 37C, OOS 11: 38C

2) Performance hit in games and frame drops (CODM, outside the ambient temperature maintained conditions), could be due to overheating? (As i mentioned, ambient temps are a bit high here). Also SystemUI lags sometimes. Adding to that, trying to bring up notification panel while playing a demanding game (like codm), the SystemUI (notification panel) opening animation is really choppy. (Is there some graphic driver issue?)

3) Brightness slider very slow to respond (seriously? Have to wait for 3 sec for the brightness to come up/go down on manually moving the slider)

4) Again, this one could be only me, but the audio seems to be a bit low after the update. All the ringtones and default notification sounds, with the same volume levels feels lower than how it was on OOS 10.

5) Battery drain - Device heat up and performance issues, translate to higher battery drain🙂

6) This may not be a bug, but it's a change that i don't quite like (at least provide options?) : Double tap to wake doesn't give a vibration feedback like how it used to.

7) Everything, including UI and default font size is bigger than what I'm comfortable with (no, changing the font/display size doesn't give the expected results). But there's a workaround: Changing the display dpi from developer options from 384 to 420.

8) I had several app crashes (Instagram, Photos) even after disabling Android System Webview as suggested by some. But this issue seems to have been fixed magically for now.

9) This is a change, but to actually poweroff/reboot, you will need to reach your finger to the top of the screen with the new UI.

10) DC dimming has been removed

11) Weird QC issue-Someone thought any greyed out field in settings is because it's not supported by phone or HEADSET... Even in Private DNS settings.(See screenshot)

12) Natural colour calibration has a weird yellow tint (sRGB profile works fine tho)

13) Lots of missed/delayed notifications. Many times, notifications from apps like Instagram, Telegram doesn't arrive on time, with delays from 2 minutes to never arriving at all. Whatsapp seems to work most of the time. Sometimes, notifications don't make sound (weird), but only flash on the screen (Yes, I've verified all my notification settings, and I've set everything to make sound)

14) Now this might be a personal preference, but I don't quite like the way OxygenOS is trying to mimic OneUI (Huge heading and small contents beneath? Not my taste.) This style is followed in the phone, messaging, contacts, calculator, etcc

15) Quickly switching between recent apps, there's a split second of a black screen that appear before the app UI is displayed (not complaining, but this was not present in oos10, it seamlessly moved from the preview of the app on the recent apps screen to the actual app ui without any flickering, and no, this is not because of dc dimming being off or anything)

16) Google Play Music is still not removed (seriously, why still have it if it can't be used?)

17) FileDash - No longer has the DNS resolver for one.plus address. You will now have to manually type in the address displayed by filedash in your browser. Also, it still uses 2.4GHz and not 5GHz.

Edits: Added more bugs/missing features