Free tool
Battery Drain Doctor
Answer up to five quick questions and we will point to the most likely reason your battery drains, with plain steps to fix it.
All possible results
Common questions
- Is the Battery Drain Doctor free?
- Yes. It is free, runs in your browser, and does not ask for any personal details.
- Does it read my phone's battery data?
- No. It only uses your answers. For real numbers, open Settings, then Battery, then Battery usage.
- What if more than one cause fits?
- The quiz shows the most likely cause first. Every result page links to the other common causes so you can check those too.