PKM1, 08 Jun 2017Download another scanner from google play store. Simple augh? maybe try to update the app first and see if it's functional? or re-install the app... if still not working. uninstall it and disable it on the [settings > apps > all] and download new scanner.
AnonD-675557, 08 Jun 2017My mi scanner app for QR codes is not workingDownload another scanner from google play store. Simple
I've been using mi4i for 22 months. Performance of battery display camera etc ( bought mi4i only since it was getting nice reviews for these) are same as when I bought . One thing I should mention here is that I frequently use 4g hotspot for 9 hours a day (25%charge would be left after that) in my phone for office use. Watch a lot of movies in it. Still the phone is awesome. I have dropped my phone numerous times. But nothing happened to the display.
Indeed there are some annoying bugs in miui. They are tolerable comparing with quality of phone. This is my first smart phone. I hear people who bought Samsung phone saying phones get hung and not so good camera quality. I started to wonder if there such thing as those. I really couldn't believe a phone can get hung. Just because of my experience with mi4i.
Justin, 23 Nov 2016Hi this is Justin here. Guys I want to tell u all that I am using mi41 for one and a half year... moreCall dropping is because of buggy double tap to unlock feature in miui. If you disable it call drop issue will stop.
Sachin, 25 May 2017My phone is cannot connect WhatsApp its because its got some stupid secuirty feature that blocks background services, go to Settings --> power manager --> auto-start manager..
then click on whatsapp to alow it to work
Sachin, 25 May 2017My phone is cannot connect WhatsApp Uninstall and switch off the phone. Then restart the phone and install it a fresh from Google play store.
AnonD-662331, 17 Apr 2017I already update miui 7 to 8. Then I downgrade again Miui6. But still have camera problem.Do a factory reset and then update to the latest MIUI.
AnonD-663282, 20 Apr 2017Hi, I would like to know, whether the Xiaomi Mi 4i has LTE compatibility...Yes.
Ashraf, 11 May 2017My name is Ashraf I'm staying in UAE I buy 2 days before Xiaomi mi not 4 but bettry going down... moreReduce the screen brightnss to 50 percent and close all the applications in the background. Install a battery saver from google play store and use it to conserve the battery. It isn't a problem.
jesus christ, you are asking "how do you change your mobile" on a public website? what answer do you expect?