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Article ID : 00379585 / Last Modified : 16/03/2026Print

Smartphone Battery Drains Quickly after an Android update

    Issue: Xperia Battery drains quickly after an Android OS software update
    Applies to: Xperia smartphones
    Likely cause: the phone is performing background optimization and learning usage patterns after the update
    Resolution summary: No action is usually required. Battery usage typically stabilizes within 1–3 days and may continue improving over 1–2 weeks

    After an Android OS update, your device may use more battery than usual. This happens because the system is adjusting to the new software.

    This behavior is normal and usually improves on its own.

    What happens after an update?

    After the update, the smartphone runs several background processes. These processes optimize apps and adjust battery usage.

    • The first optimization usually finishes within 1 to 3 days.
    • After that, the system continues learning how you use the smartphone. Battery performance may improve gradually over 1 to 2 weeks.

    During this time, battery usage may be higher than normal.

    What you can do

    In most cases, you do not need to do anything. The system will optimize itself.

    You may also try the following:

    • Keep your device well-charged during the first few days after an update.
    • If you are worried about battery usage, you can temporarily limit apps that run frequently in the background.

    When to contact support

    If battery consumption does not improve after two weeks, please reach out to an authorized service center for help.