amanjuman, Jul 11, 2019 : I'm using OnePlus for a couple of years. So far, I used four OnePlus devices. I love OnePlue because of it's lite and smooth. Unlike other phone, lots of stuff comes which drain RAM a lot. But one thing disappointed me which is there is no built-in security option from OnePlus end like Samsung and Apple do. The reason I bring this request: I live in a country where phone getting lost or stolen is a daily matter. I lost my First OnePlus 5; someone entered my room while I was sleeping and took my phone. Yeah, it's obvious he turned off the phone when he got it. I tried to track it from Google, but it was never online. Later I went police station to file a complaint. As there is too much phone lost or stolen cases, they never used to help to get back the phone. Instead, they will ensure if someone does something illegal using your lost phone. It just all about a paper. So basically there is no way to get back your phone even after complaining law enforcement agency. What is my thinking? We know all of the OnePlus phones got the non-removable battery. If there is an option to in security section that, If a user wants to enable lockdown Power Button while the phone is locked. So this will prevent an unauthorised user from turning off the phone while the phone is locked. Let explain it a natural way, I locked my phone just like regular lock we use as Finger, Pin or Pattern. Right now we can power off our phone while in Lock Screen, even we can turn off/turn on wifi, mobile data from the sidebar. What I like to say, If my phone is in the locked state and someone stanched my phone he will turn off it as soon as possible so that I can not track it from Google or any third parties. So If I enable that features it will not allow anyone to turn off or reboot phone while in lock screen even accessing sidebar, instead it will ask for pattern or pin. By this way, I can track my phone (I considered my phone always connected with Data) from Google. I know there are a couple off third parties app available in Play Store, but some of them are working on Android 8.0 or less or not work properly. If OnePlus bring that feature, It would be an excellent way to secure your phone. I know someone can easily pop out the sim card by that situation, in that condition OnePlus could bring SMS alert like when someone put new sim inside the phone it will trigger SMS to the number which was configured in settings. Also, OnePlus can let the user choose how much time to force turn off the phone in that situation. So this will create random time for each user aspect as Android has a 10-sec option. I'm not good at English, I might not be able to express what I like to talk, but I hope people like me love this request.