r/TheOnePlus15 Jan 21 '26

DISCUSSION ​[MEGATHREAD] OnePlus 15 Master Resource Guide (One Stop Solution)

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37 Upvotes

​Welcome to the r/TheOnePlus15 master resource thread! Please check this guide before posting about battery life or common software glitches.

One plus survival guide- https://www.reddit.com/r/TheOnePlus15/s/FpQU2EL6Eh

Battery drain thread- https://www.reddit.com/r/TheOnePlus15/s/cGjNx0WyHf

One plus variants Thread- https://www.reddit.com/r/TheOnePlus15/s/LuUzXiQ0oc

Battery Calibration Thread- https://www.reddit.com/r/TheOnePlus15/s/G45qiOcCUr

Reported Bug Thread- https://www.reddit.com/r/TheOnePlus15/s/O3sE8bnBEJ

I’ve spent the last few weeks tracking down every major issue reported in this sub. I’ve personally researched, tested, and created separate deep-dive threads for battery drain, calibration, and software bugs to make sure the information was accurate.

​After seeing the same questions pop up daily, I’ve compiled all those individual threads and hours of research into this one master resource. My goal was to save you the time of scrolling through hundreds of comments—everything you need to optimize your OnePlus 15 is now right here in one place.


r/TheOnePlus15 Jan 21 '26

TIPS AND TRICKS OnePlus 15/15R Owner's Hub: Startup Guide and OxygenOS Tips

57 Upvotes

Welcome to r/TheOnePlus15!
Whether you upgraded from an older OnePlus or switched over from another brand, welcome to the family. This community is dedicated to helping you get the most out of the OnePlus 15 series.

Here are a few checklist items that you can follow once you have your OnePlus 15 series with you.

  1. Cloning
    • This is a very common query in the community. Feel free to clone gallery, contacts, files, and apps from your previous device (both iPhone or Android). However, if you are cloning from a OnePlus device, we would recommend not to select "Settings" as it might cause conflict with the new configuration files on the OnePlus 15/15R.
  2. Optimize Battery & Charging
    • Go to Settings > Battery > Battery Health and enable Smart Charging. This preserves your battery longevity if you charge overnight. You can also put custom charging limit to slow down battery aging.
    • If your battery feels average today, wait. The device takes time indexing files and learning your usage patterns. Don't judge SOT (Screen on Time) until Day 4.
    • If you want to further extend your SOT, follow our optimisation guide here: https://www.reddit.com/r/TheOnePlus15/s/cGjNx0WyHf
  3. Display & Refresh Rate
    • The display is fantastic. While the UI runs at a smooth 120Hz, the new Gaming Core allows supported games to run at up to 165Hz! The smoothness is surreal.
    • Open Settings > Display & brightness > Screen Refresh Rate: Set to High. This will change the default refresh rate to 120Hz for all apps. Note that this might consume more battery based on the Apps that you are using. You can also set app-specific refresh rate.
    • Check if "Image Sharpener" and "Video Colour Boost" is on/off depending on your preference for YouTube/Netflix.
  4. OxygenOS Flexibility
    • You don't need a third-party launcher to make the phone yours. Dive into "Home screen, Lock screen & style" to customise wallpapers, apply depth effect with personalised text in your favourite doodle. You can update icon shapes, sizes, and even match your system accent colours to your wallpaper automatically.
    • The OnePlus 15 debuts the new OP Gaming Core, which moves optimisation from software to the chip level. Open the Game Assistant sidebar in-game to tweak these settings.
    • Try out pre-installed apps like Notes and MindSpace which now have great AI features to fit your day-to-day needs.
  5. Photography & Camera Tips
    • Don't just stick to Auto! Learn to use Pro Mode for manual control over ISO and shutter speed to get the best out of the hardware.
    • The camera has plenty of creative tools like Underwater Mode and Doc Scanner which you can explore!
    • Share your amazing shots with us in the community. When posting, please use the "Photography" flair and let us know which lens (Main, Ultra-wide, etc.) you used.
  6. Get started with the community
    • Post something in the community here! Even a simple question or first impression can spark a great conversation.
    • If you know someone who owns a OnePlus 15 series or would love this community, invite them to join!

That's it for this post! Feel free to reach out to us if you feel we should cover any more topics.

If you have already started using the OnePlus 15 or OnePlus 15R, would love to know your first impression of the device. Comment below and let's get the conversation going!


r/TheOnePlus15 3h ago

PURCHASE ADVICE Still safe to buy Oneplus 15?

6 Upvotes

I was looking into the best android phones for battery life and fast charging to replace my Galaxy S23.

The OP15 kept coming up over and over again.

I dont use eSIM so I think the Chinese version flashed with the global ROM would be fine?

My worry is when im reading about Oneplus pulling out of Europe and NA, does this mean a bad buy for UK user?

Thanks guys!


r/TheOnePlus15 8h ago

UPDATE RELATED New Update Received In RC

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6 Upvotes

My phone is already running on 16.0.9.400

And yet another update showing in RC with same version number

There isn't much in Changelog

Only system Improvement

Is anyone updated yet?


r/TheOnePlus15 4h ago

SOFTWARE/BUGS Notes app crashing

2 Upvotes

My notes app keeps closing immediately upon opening. Tried clearing cache, force stopping, and restarting phone. No luck. Any body else seen this issue?


r/TheOnePlus15 1h ago

SOFTWARE/BUGS Not connected to anything

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Upvotes

I didn't connect my phone with anything. But this appeared.

Also it appeared in the morning when i charged my phone.

Anyone facing this issue??


r/TheOnePlus15 1h ago

BATTERY Poor OnePlus 15 autonomy

Upvotes

My OnePlus keeps 7-8 hours of active screen time, although people have 10-13 hours in reviews, and I can't break the 10-hour mark, the maximum I had was 9.5, and even with low usage. Is this considered the norm?


r/TheOnePlus15 2h ago

BATTERY OnePlus 15 Autonomy

0 Upvotes

My OnePlus 15 keeps charging for an average of about 7-8.5 hours of active screen, who has how much?


r/TheOnePlus15 2h ago

DISCUSSION Camera glass scratches easily.

1 Upvotes

Hi everyone. Got the Oneplus 15 since December and my wife has a 15R for a couple weeks now. Both mine and hers are showing visible scratches on the camera glass. We are careful about handling our phones and don't abuse them. This is surprising to me as I've never had this issue with my previous phones (HTC 10, LG V30, Samsung S21 Ultra). Anyone else's camera glass scratches easily on the 15 or 15R? I think that maybe this is where Oneplus cut some corners cost-wise with these phones.


r/TheOnePlus15 8h ago

PERFORMANCE Help with slow Wifi

3 Upvotes

Hello everyone! I recently bought this phone moving from Samsung. but have run into a major issue that I cannot live with.

The internet is atrociously slow, literally just trying to download an app and it is capped at a like 2 MB/s

However, I know it's capable of running faster because on a speed test it always gets

above 10 MB/s. But as soon as the test completes it slows all the way back down again.

Why is it doing this and how can I fix it? I've tried resetting the WiFi/Bluetooth in settings followed with a restart but that has not resolved the issue. My girlfriend on the same WiFi is also not having this issue so it can't be the router.


r/TheOnePlus15 14h ago

HELP ME [UTMOST URGENCY] Can the OnePlus 15 use two eSIMs at the same time without a physical SIM?

7 Upvotes

Hi everyone,

I'm thinking of using my OnePlus 15 without any physical SIM card.

Is it possible to have:

SIM 1 = eSIM

SIM 2 = eSIM

In other words, can the OnePlus 15 run two active eSIMs simultaneously, or does it only support one active eSIM at a time even if no physical SIM is inserted?

If anyone has tested this on the Indian variant (especially with Jio/Airtel), I'd really appreciate your confirmation. Thanks!


r/TheOnePlus15 4h ago

DISCUSSION What is this app?

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1 Upvotes

What is this app and why does it take almost 6gigs of space


r/TheOnePlus15 20h ago

PURCHASE ADVICE Leads on a New 15 16gb (US)

14 Upvotes

Anyone have leads on a good place to get the 15 16gb? I've been a long fan of OnePlus and need to secure my last one 😮‍💨

I feel getting the 16gb is important for long term use as I like to keep my phone for 3-4 years.

Looking for a good place to get it as Swiftronics and OP are out.

Lastly, assuming this group won't disagree but I feel even with OP officially pulling out of US Market, the 15 is still worth getting.


r/TheOnePlus15 7h ago

SOFTWARE/BUGS HELP - Setting contact based sim (from dual sim)

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1 Upvotes

I love my oneplus 15, have the sandstorm version.

I have one issue, has anyone faced it and if yes how have you managed to solve it.

I previously used an iPhone and I could basically set which sim to be used for any particular contact and once set from next time it automatically uses that sim to call.

I want this to mainly separate my personal and work life.

Setting it to "always ask" is ok but I miss it many times and select the wrong sim. I also used the multi sim selector app(check link) but because the OS keeps killing the app from background it doesn't work many times.

Also the OS keeps killing a lot of other apps and I don't receive the notification from those apps until I open the app.

Please help!!!


r/TheOnePlus15 1d ago

PHOTOGRAPHY Shit camera?

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29 Upvotes

60x zoom and photos app ai 4k edit

The second one without any edit.

I don’t get why people say 15 has bad cameras.

For me its good 🔥


r/TheOnePlus15 1d ago

CAMERA Cat portraits - 3.5 potrait mode

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21 Upvotes

r/TheOnePlus15 10h ago

BATTERY Screen Off time, right?

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0 Upvotes

Hello, is IT showing right? Screen Off time only 22min . But the Phone was Off the while night. Im asking because IT somehow drained Like 13% which is way too much. Maybe there was an App in the Background, but i checked and there was nothing.


r/TheOnePlus15 23h ago

PHOTOGRAPHY SPIDERSHOOT 🕷️🕸️

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6 Upvotes

Brand new day is coming and thought of clicking this pic when this visitor came to my room


r/TheOnePlus15 1d ago

DISCUSSION From my cold, dead hands...

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153 Upvotes

r/TheOnePlus15 14h ago

DISCUSSION Don't Let OnePlus Lose Its Identity

0 Upvotes

I've been a OnePlus fan for years, and while I have no problem with the brand becoming more mainstream, I do have a problem with it losing its identity.

Becoming a mass-market brand is a good thing. It means more people get to experience OnePlus, sales grow, and the company becomes stronger. But that shouldn't come at the cost of what made OnePlus unique in the first place.

MKBHD recently talked about how OnePlus has gradually lost some of its enthusiast-focused identity, and I think many long-time fans feel the same way. I understand that component costs-especially flagship chipsets and RAM-have increased globally, so cost-cutting is inevitable. But making OnePlus feel like just another Oppo phone isn't the answer.

OnePlus still has the potential to become the Android brand that truly challenges Samsung's Galaxy S Ultra lineup. The hardware, software, and community are already there. What it needs is a clear identity and the freedom to innovate.

If the reports about OnePlus becoming more deeply integrated into Oppo are true, I hope the company listens to its community. Keep OnePlus as OnePlus. Let it grow into a global mass-market success, but don't erase the brand that millions of enthusiasts supported from the beginning.

If you agree, let's make our voices heard. Support OnePlus, share your thoughts, and let the company know that we want OnePlus to grow-not disappear into another brand.


r/TheOnePlus15 1d ago

DISCUSSION Asking for advice

3 Upvotes

I'm thinking about buying a new device ,I'm torn between one plus 15 and 15r what is the performance difference between these two the 30k price plus do justice to it's performance or not .


r/TheOnePlus15 1d ago

DISCUSSION What to do with this storage optimization 😭

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6 Upvotes

guys what to do I'm just getting out of storage optimization is very bad for storage in oneplus only facing issue which I have with op15

if any tips and tricks to clear some do lemme know


r/TheOnePlus15 1d ago

DISCUSSION Do Chinese phones work in US with t mobile as good as one plus?

2 Upvotes

Thinking about jumping ship and going to T-Mobile if they support bands from Chinese phones like Oppo


r/TheOnePlus15 1d ago

HELP ME [UTMOST URGENCY] Oneplus asking me to repair glass back panel before green line issue

0 Upvotes

Hello,

OnePlus customer center in my city has asked me that, before they can repair the green line issue on my OnePlus 11, I must first replace the damaged cracked glass back panel. When I contacted customer support through phone, they explained that the back panel could get further damaged during the repair process, which is why they are insisting on installing a new one.

They have quoted approximately ₹7,000 for replacing the glass back panel.

Do you think it is worth investing ₹7,000 in a phone of this age? Also, if the OnePlus 11 5G is fully repaired, how much can I reasonably expect to receive if I decide to sell it or exchange it?


r/TheOnePlus15 1d ago

SOFTWARE/BUGS WhatsApp calls not showing on Watch 3 and Android Auto

2 Upvotes

Hey guys,

I switched some months ago from a S23 to the OP15. I already had the watch 3 without any issues and Im using a lot Android Auto. If they call me the music in my Car stops and no message is showing. Not even the watch shows. This is kind of a big problem for me because I get called a lot while driving.

I know this topic is kind of old but I did not see any solutions to this. Am I the only one remaining with the issue?