Spontaneous Reboot and Massive Battery Issue after new update
Please tell us some basic information before asking for help:
- Model Name: 6z (ZS630KL)
- Firmware Version: 17.1810.2011.183
- Rooted or not: No
- Frequency of Occurrence: Very Frequent
- APP Name & APP Version (If your issue relates to the app): N/A
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
After the most recent update my phone has been plagued with a multitude of battery issues and spontaneous reboots. To begin with, the phone randomly reboots after entering a few apps (Snapchat, Chrome, and even the Settings app). After rebooting the battery has been taking a massive hit. For example, I charged it to 100% used it till 70% and after the spontaneous reboot, the battery was back down to 18% (see screenshots). While I thought this was a battery calibration issue at first, I tried calibrating the battery and also ran the phone in safe mode but to no avail because as soon as I opened the Settings application while in Safe Mode, another spontaneous reboot struck and I was rebooted back into the normal mode. Many a times these spontaneous reboots also get stuck in a boot loop and my phone does not power on until I have connected it to my charger. Let me know how to proceed because my phone is virtually unusable.
Edit: Should I also try downgrading to the previous system update version .179 / Or performing a factory reset? Can I do so without unlocking the bootloader?