I wanted to temporarily revive my ancient Nexus 4, but the battery is completely dead from what I can tell ... it will shortly come up with the charging sign on the screen when connected to power, then the red LED will blink forever, sometimes it will turn off eventually, but the battery doesn't seem to take any charge.

There's no point in shelling out some 20-30€ for a new battery, so I thought about just soldering on power to the phone (or the battery cable/connector). I see a V- and V+ mark on the battery lead, not sure if it's the 1st and 3rd lead, or 1st and 4th (which is it?) ... can I just put 3.8V on the +/- leads to get it to power up?

⟐ Commented June 01, 2022 at 18:27 MST

always optimizing the apps and auto powering off

I'd like to know if super-glueing the pin back on will fix the phone, allowing it to charge.

I use one of those USB amperage meters and I only see 0.01A current draw from there.

I guess this one is caused by faulty battery?

i am looking for an adapter to go from the two power contacts of a cell phone vibrator (nexus 4) motor into two wires, which i will use to activate the remote starter in my car from the contacts of the cell phone when my cell vibrate. i reason that many people already solved this problem to use their cell phones to activate things in their cars or in their homes. do you happen to know where to purchase or how to make such adapter? i do not want to weld wires to the very tiny contacts of the cell phone where the vibrator motors sits because it will very likely burn them.

thanks.

fernando

For a couple of weeks my good old Nexus frequently asks for the pin code. Especially while driving in my car. Sometimes it also happens when I carry it around in my pocket.

I changed the battery but without any effect.

Sounds funny, but I have the feeling, it always happens at the same location while commuting.

Has anyone an idea? Might resetting the device to factory defaults help?

Thanks in advance....

would like to configure one N4 to a Ubuntu Phone.

This Nexus 4´s Glass is broken and the LCD has black spots.

I can still use the touch function at ca. 65% of the screen, so i can just connect Bluetooth Keyboard and Mouse?!, so i wouldnt mind the touch is not working.

Can i completely remove the LCD+Glass/Digitizer and still boot (into Ubuntu Touch), utilizing Slimport for displaying?

THX!

⟐ Edited by author September 01, 2016 at 3:29 MST

I found a thread in this web site that said some replicas only worked with 4.2.2, so I downgraded from 5.1 to 4.2.2 and touchscreen works, but I don't want to be stuck with this version, some of the apps I use doesn't work with this version, is there any way to make the touchscreen controller work with at least 4.4.4?

This is the thread Touchscreen not working after display change I read and the user projectgus says something about CyanogenMod fixing the issues or that's what I understood.

Is there anything else I can try?. any advice?

⟐ Commented March 31, 2016 at 18:37 MST

and there is no supply to battery when it is plugged in charging

⟐ Commented March 25, 2016 at 9:09 MST

Thanks very much!

I notice that the after markets USB cable that I bought (they're not generic ebay/chinese ones but Lindy ones) stopped letting me transfer data to the computer to my Nexus 4 phone (but they'restill able to charge the battery). I remember they used to deliver data as well (and as advertised).

I did a test with a brand new Samsung cable which arrived with my girlfriend new Galaxy Note 4 phone.

Now, there's a BUT! It's not the first time this is happening and it's really frustrating (all the times I need to transfer some photos I need to find a working cable) but should I possibly blame the USB port on the phone for this? It's getting loose/wobbly/"dodgy", requiring me to re-push the connector back in to avoid conncection issues.

Now the question is: could be this loosey port be the cause?

I had good brand phones before getting to the same situation (loose usb port) in a relatively short time: how is that possible producers are still sticking to this kind of connection?

Did even Apple drop the mag safe on the recent iPhone? (it's ages I haven't seen one)

Why USB-C didn't address the issue at all?

It's nearly 2016!!!

Thanks for suggestions and sharing your experience

⟐ Edited November 04, 2015 at 19:09 MST

So, why do the Audiojack and the Camera not work? Software or Hardware Problem?

I will Try to dissamble the Phone today. Maybe i forgot to plug in some cables. But why can i not update? OTA and adb/fastboot didn't work. Im running the nexus 4 on Android 4.2.2, would like to Upgrade to higher Versions.

Some hints anyone?

⟐ Edited November 04, 2015 at 17:34 MST

My nexus 4 display was not working so I changed the entire display unit. After changing the display was working fine initially. After a month or so, suddenly the display is not turning on after pressing the power button.

After pressing the power button so many times, it switches on. Again if I turn off the display, it doesn't switch on.

Can anyone help me with the issue

During screen panel replacement, I accidently damaged the component when pry the metal tab up using a spudger and lift up the disconnected black flap.

The phone currently still working well, but I'm worry about it.

What is the function for the small piece of black component on the left hand side?

Please assist.

⟐ Edited September 08, 2015 at 7:09 MST

Would that be the problem? Or should I just buy another battery and see if that works? I can't tell if the battery is getting charged or not, but the phone is slightly warm after a few hours.

UPDATE:

Got a new charging port, it didn't come with the gold foil I mentioned. Put it in anyway, and now I get a solid green notification light, so at least I got some progress. I'm trying a bunch of different things, looked online and read a bunch of forum posts about red blinking lights or red solids, but very, very few solid greens. Anyone have any experience with that?

UPDATE #2:

Got a new battery, replaced it, and it works just fine! Not sure if it was the combination of replacing the charging port and the battery or simply the battery itself. Glad it works though.

⟐ Commented August 12, 2015 at 0:36 MST

⟐ Edited July 19, 2015 at 9:39 MST