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iPhone discharges 1-2% per ~15 min when idle. It happens only when LTE is active, with 3G it`s ok. This issue started after updating to ios 15.2. In addition to that, after updating to 15.0 the battery became weaker in everyday use. Phone is new, bought in October 2021.
iPhone 12, iOS 15
Hello AntonGinzburg,
We appreciate the troubleshooting that you have completed to this point. In addition to updating your iOS version, were you able to complete the other troubleshooting steps that we have provided? If not, please complete those steps and let us know the results. Those steps will help with your battery life. If you have already completed these steps, the next step will be to contact Apple Support here: Apple - Support - Product Selection
Let us know if you have further questions.
Take care.
Hello AntonGinzburg,
We appreciate the troubleshooting that you have completed to this point. In addition to updating your iOS version, were you able to complete the other troubleshooting steps that we have provided? If not, please complete those steps and let us know the results. Those steps will help with your battery life. If you have already completed these steps, the next step will be to contact Apple Support here: Apple - Support - Product Selection
Let us know if you have further questions.
Take care.
Hello AntonGinzburg,
Welcome to Apple Support Communities. We understand that you battery life isn’t as expected. We are happy to help.
Apple has released an iOS update. Please use the steps here to update: Update your iPhone, iPad, or iPod touch - Apple Support
We recommend the steps here to maximize battery life and performance: Batteries - Maximizing Performance - Apple Here’s additional information on the iPhone battery: iPhone Battery and Performance - Apple Support
Let us know if you have further questions.
Take care.
Updating to iOS 15.3 didn't help. Is there anything else I can do to solve the problem?
Problem solved after updating to iOS 15.3.1
Thank you for support
Battery drain iPhone 12
