Honestly, the new update is horrible. I have an iPhone X and downloaded ios 14.2. my phone was running slower, but I did not mind it. After taking my phone to get fixed (the screen was cracked), my phone was still ok. No glitches whatsoever. Then all of a sudden, my LCD completely stopped working. I didn't know why that happened, but it did. I took it back to get fixed, and when I went to get my phone, it was glitching all over the place. I did not understand it was happening and I was worried. My sister then told me it was a bug and that I had to download the newest version of ios 14 (ios 14.3), and I did end up downloading it. But it just has not helped. Literally, my phone is going crazy. I have even erased and restored my phone twice now (today, December 31, 2020). I downloaded ios 14.3 last night, by the way. And the first time I got my phone fixed was Saturday (December 26, 2020) afternoon and the second time was yesterday (December 30, 2020).