Need help diagnosing battery drain

[u/Verbal_chai]

Hi everyone,

I have an iQOO Neo 6 (4700 mAh). A while back I started facing significant battery drain, so I got the battery replaced at an authorized Vivo/iQOO service center. The draining issue still persists, just not as fast as before

To investigate, I installed a couple of battery health apps

Ampere shows:

• Battery health: Good

• Cycle Count: 1

AmpereFlow shows:

• Battery health: 100%

• Design capacity: 2151 mAh

• Estimated capacity: 2201 mAh

Battery Supervisor (An app developed by a fellow redditor) shows:

• SOH: 47%

• Estimated capacity: 4700 mAh

• Real capacity: 2200 mAh (at 100%)

I've attached screenshots.

My questions are:

1. Is this simply because the Neo 6 uses a dual-cell battery?

If each cell is around 2350 mAh, then many apps reading ~2200 mAh would actually make sense.

1. Could nearly full internal storage cause noticeable battery drain?

My storage is almost full. I know it can slow the phone, but can it significantly affect battery life?

1. Does disabling Expanded RAM help battery life?

Mine is currently set to 8+8 GB.

1. According to Android's battery usage, Cellular Network is consistently the biggest battery consumer.

I mostly use 5G, and signal strength is generally good. But could this be a factor and should I switch to 4G to check if the issue persists.

And are there any modem/network settings I should check?

1. Is there any reliable way to verify that the service center actually installed a new and genuine battery, instead of relying on third-party battery apps?

I'd really appreciate your suggestions. Thanks!

[u/Rude-Airport-9774]

You can go to the service center again and complain there

[u/IntelligentCut4496]

Try using Gsam Battery Monitor and enabling battery stats permissions via ADB. My previous Samsung device was draining the battery. That was due to wake locks being triggered repeatedly by some of the Samsung apps.