Just Piping in & confirming i have same experiences with keybd typing lag... and then some! I think they’re possibly all related, hence sharing all this poop here.
Yes, 3seconds to 15secs delays. Has gotten progressively worse over the past 2 months. More Severe now. But is at random, sometimes better & ok for short periods & sometimes per keybd dictionary resets or rebooting this iphone 8. Or toggling (on/off): the iMessage or sms/mms options, or the text mssg features per spelling dictionary or whatever predictive options too.
Another dysfunction that started at random but is definitely occurring more than past weeks has been disappearing texts after typing & sending; it goes, then it vanishes without evidence of existing.
Another dysfunction that also started same times is it says “not delivered” but it did deliver (as verbally confirmed by recipients; sometimes multiple times because I resent multiple times!).
i have backed up everything on cloud & reset the iPhone to clear settings & content but not all the way to factory settings as the one person described from apple customer service solution.
One temporary productivity practice with this dysfunction has been:
type up mssg in email or reminders app, cut & paste it into the messaging. Seems to get it all in there fast enough to avoid the lag (once i get the cursor enabled!).
Another alt solution has been to dictate; it works with a bit of lag still but gets a lot of texting in although invariably editing it takes too long as I experience the same keybd lag.
So it seemed like this dysfunction was / is related to processing time durations.
So i thought it’s my phone & too much old texts saved. So i did selectively regrettably delete assorted longer text threads or photos attached with no improvement. I do have plenty of HD memory 50% still so I don’t think that is the issue, so it’s disappointing that i had deleted /sacrificed much stuff to attempt resolving this chronic issue. Seems like ultimately going to have to delete all old stuff maybe? Even with a new iphone? Maybe no use iphones in future. Or save all photos to HD get off cloud.
Any chance at all if this is related to screen sensitivities? I have noticed past year more typos typing on my now 2yr old iphone8 screen. As if my fingers getting fatter? (Probably different issue though!).
I’d think probably not (screen sensitivity issue) if new iphone 12 folks are having this keyboard typing lag issue still.
Ok, this has been my worsening experience over past months.