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I think that's normal. Mine also got from 80% to around 40% yesterday with only 2 hours of screen on time. After the initial setup, your phone is going to do a lot of background processing. It has to download your iCloud data (photos, calendar entries, contacts, notes, etc) and any additional data that you may have, say, Apple Music or Spotify playlists, OneDrive or Dropbox data, mails and so on. Even beyond that, many things are happening on your device after the initial setup (think photo processing, storage management procedures).

So for the first two days I wouldn't pay too much attention to it. If you're still getting lackluster battery life even multiple days after you've set up the phone, then I'd try contacting Apple Support.
 
What kind of battery life are people seeing on their new iPhone 13 Pro?

I’ve lost 50% of my battery life in barely 2 hours (it also it quite warm to the touch). All I’ve been doing is looking at the MacRumors website. :(

It’s probably exactly because you’ve been looking at this website.

There is a massive thread somewhere with people having huge battery draining issues on the iPhone and also they get very hot. Something to do with the adverts. They haven’t yet managed to find a fix for it. I would imagine if you don’t look at this website and do other stuff, you might be okay?
 
If it's new it's normal. It's reindexing and doing a lot of stuff in background

For browsing this forum I just prefer using Tapatalk. AdGuard takes care of the ads system wide
 
It’s probably exactly because you’ve been looking at this website.

There is a massive thread somewhere with people having huge battery draining issues on the iPhone and also they get very hot. Something to do with the adverts. They haven’t yet managed to find a fix for it. I would imagine if you don’t look at this website and do other stuff, you might be okay?
My old iPhone X doesn’t have the same problem when on the Mac Rumors web-site.
 
What kind of battery life are people seeing on their new iPhone 13 Pro?

I’ve lost 50% of my battery life in barely 2 hours (it also it quite warm to the touch). All I’ve been doing is looking at the MacRumors website. :(
Download AdGuard and give it a try. My 13 pm was doing the same thing. Getting warm quickly just from browsing macrumors. Stumbled across this tip, downloaded AdGuard and now the phone doesn’t get warm anymore.
 
I lost about 4 or 5 percent from web surfing for about 45 minutes.
It makes me a little nervous that nobody else has responded that they are also seeing the really warm temperatures and fast battery life drain. But, I will give a few days and see if things improve. Hopefully I didn’t get a lemon.
 
It makes me a little nervous that nobody else has responded that they are also seeing the really warm temperatures and fast battery life drain. But, I will give a few days and see if things improve. Hopefully I didn’t get a lemon.
Try low power mode. And when it gets hot, dunk it in water
 
Mine was warm today after a call and after tinkering with the camera. Battery went from 75% to 50% in 2/3 hours of frequent fidgeting. I think it's behaving normally. If in a few days you still see unusual warmth and/or very poor battery life then you can start to worry. Also look in Battery in Preferences about what is consuming most of it
 
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Yeah I've noticed both my iPhone 11 Pro Max and iPad Mini both getting really hot while browsing MacRumors forums. It's really annoying.

Here's the thread: https://forums.macrumors.com/threads/macrumors-site-forums-causing-battery-drain.2298839/
It’s probably exactly because you’ve been looking at this website.

There is a massive thread somewhere with people having huge battery draining issues on the iPhone and also they get very hot. Something to do with the adverts. They haven’t yet managed to find a fix for it. I would imagine if you don’t look at this website and do other stuff, you might be okay?
 
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Hitting almost 8 hours screen on time and I’m at 10% now. Took off the charger at 4am when I had to get up and go to the loo LOL.

Got almost 6 hours yesterday including setup and that was with the battery only being at 75% when I received it.
 
Mine was warm today after a call and after tinkering with the camera. Battery went from 75% to 50% in 2/3 hours of frequent fidgeting. I think it's behaving normally. If in a few days you still see unusual warmth and/or very poor battery life then you can start to worry. Also look in Battery in Preferences about what is consuming most of it
Thanks for the tip about ‘Battery in Preferences’. It says that 77% is used by Safari. This still seems so strange, though, as my old iPhone X never gets this hot when using Safari.
 
My 13 pro battery has been great! Beats my 12 pro max battery. I’m a heavy user especially on downtime at work. 30-40% on my 12pm and 40-50% on my 13pro when I leave work.
 
My 13 Pro battery is dying fast. Faster perhaps than my iPhone 12 Pro which had degraded to 89% capacity 😔

My best battery life to-date was my iPhone 11 Pro. I was hoping that the 13 Pro would be back at least to that level of staying power, but day three and I’m still looking for settings to disable to see how I can get decent battery life.

I’m already down to 66% with only 120 minutes of screen on time.
 
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Late to this thread but wanted to chime in. Recently upgraded from 11PM to a 13 Pro and I've noticed the battery to be noticeably worse. Feels like it's chewing through battery much faster than it should be for a brand new battery.
 
my battery drains about 3-4% overnight while i’m sleeping idle ( about 6 hours ). is this normal? i’m getting about 7 hours SOT on a full charge. it’s decent but not what i was expecting after all the bells and whistles about battery life from apple. wondering if i should bring it to apple for a check.
 
Late to this thread but wanted to chime in. Recently upgraded from 11PM to a 13 Pro and I've noticed the battery to be noticeably worse. Feels like it's chewing through battery much faster than it should be for a brand new battery.
Biggest problem for people posting on this site.... is this site.

You can pay $25/year to Macrumors a year and hope that also eliminates all the rogue javascript or potential other garbage.

Or you can pay 1.99 for "Wipr" or AdGuard or an extension in the AppStore that blocks crypto-mining/ads/tracking etc.

This has been mentioned in about every thread about battery life over the last 4-5 days. This site is killing your battery more than anything else if you spend any time on it.
 
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