A temporary fix for Redmi Note 9S proximity sensor bug. Go to Settings and tap on Lock screen & password. Scroll down and tap on Advance settings. Tap on the Pocket Mode to turn it off. A temporary fix for Redmi Note 9S Proximity sensor bug. There are other reasons for the proximity sensor not works as it should. 2. Test if the proximity sensor is working. The second thing you need to do is to calibrate the proximity sensor to check if it is working or not. There is a built-in tool in most Android phones that can help you to do this. Here's how you can do the proximity sensor calibration on Xiaomi, Redmi, Mi, and Poco phones - I've not had any issues with the proximity sensor. GSMArena say it has one but I've no idea what or how, it just works for me and flawlessly too. Other phones have flicked on and off when near my face etc, not seen that with this phone so far. Had it a couple months. Performance is pretty awesome. The Xiaomi Redmi Note 3 is the latest model from the Chinese company, and is all set to bend the rules of the budget segment. The phone is the first in the Redmi series to have a full-metal body and a fingerprint sensor. The phone also marks the debut of Qualcomm's Snapdragon 650 SoC, which offers Here's a step-by-step guide on how to calibrate a Xiaomi proximity sensor. 1. Go to Settings > Additional settings. 2. Tap on the "Accessibility" option. 3. Scroll down and tap on the "Proximity Sensor Calibration" option. 4. Follow the on-screen instructions to calibrate your Xiaomi proximity sensor. PXJ6Bj8.