Hello, I use a iPhone 8+ and do not plug my phone in overnight. When I initially bought my phone it would lose about 7-10% overnight, this to me was reasonable. All the sudden it is losing 15-20% overnight. I have not changed how I use my phone at night. I close out all my apps and everything. Does anyone know why the battery drainage has changed?
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iPhone 8/Plus Battery Life Drain Overnight
- Thread starter Benc3
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First of all, you need to check if your iPhone is doing app updates overnight. In fact, check for that. App updates “wake” a CPU and initiate Wi-Fi transmission.
Even 7-10% over night isn’t reasonable!
If there’s nothing runnng in the background, and you’re not in an area with weak signal strength (requiring the phone to always struggle to find a good connection) you should only be losing like 1-2% at most.
If there’s nothing runnng in the background, and you’re not in an area with weak signal strength (requiring the phone to always struggle to find a good connection) you should only be losing like 1-2% at most.
I would but the point is to have the ability to receive messages or calls overnight, if I enable airplane mode than I might as well just shut down the phone
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I would check but the point is to have the ability to receive messages or calls overnight, if I enable airplane mode than I might as well just shut down the phone
Not forever. Just to diagnose your battery drain. You asked why. We’re trying to help you get the answer.
To those suggesting “Airplane Mode”, bad advice. You’ll only get optimal results, not real world.
In Airplane mode, all radios and radio chips are turned off (that’s around 125 mW of Power saved). That means you’ll definetly see a battery improvement and get fake results.
Like I said at the very beginning of this thread. Check for app updates that happen over night. Those, as explained earlier, wake your CPU up, maintain constant radio usage until a download is completed. Imagine that for at least 3-4 apps at 100MB each.
In Airplane mode, all radios and radio chips are turned off (that’s around 125 mW of Power saved). That means you’ll definetly see a battery improvement and get fake results.
Like I said at the very beginning of this thread. Check for app updates that happen over night. Those, as explained earlier, wake your CPU up, maintain constant radio usage until a download is completed. Imagine that for at least 3-4 apps at 100MB each.
Airplane mode is easy to try and can indicate a battery hardware problem not related to radios....
My X drains at 5-7 % in overnight standby, airplane mode on or off doesnt make any difference. Never experienced such drain on other iPhones I had. I am just wondering if thats something to do with 11.2- 11.2.x updates. I am not sure, but I dont think this happened in 11.1.2 on my X.