Mine died yesterday, after 3 years and 2 months of use. Neither long pressing Power (with or without Volume Down and/or Volume Up) nor letting it charge for a few hours helped. I know it charged correctly because it warmed up a little while charging and cooled off afterwards (= full battery), yet it would still not switch on.
For the record, for a few months prior to this my Nexus 4 occasionally had the following issues:
- not hearing the other party during calls (while they could usually, but not always, hear me)
- changing the screen brightness wouldn't work
- the camera wouldn't work ("Can't connect to camera") – apparently this isn't exclusive to Nexus 4 devices
These always required a reboot in order to fix them. I urge anyone experiencing these issues to backup important data in case your Nexus 4 abruptly suffers the same fate.
I have yet to try disconnecting the battery cable after opening the back cover, but I doubt it's going to help :'(
Update / Edit: It actually did help! If you have the same problem, follow the instructions on
iFixit to disconnect and reconnect the battery cable. That did the trick for me!
My inner sceptic's opinion: Since I am not the only one to have a dead Nexus 4, I can only suspect that this was a pre-progammed failure.