• 无法连接到Wifi；
• 无法使用运营商的网络语音通话；

只能通过移动网络上网，怎么办？

补充的情况是：

• 摔之前是Android 7.x，恢复原厂n次无效；
• 用移动网络流量硬生生升级到Android 8.0，问题依旧；
• Wifi开启时，能找到预设的热点，状态就是重复连接然后重复不成功；

求大神指点，谢谢！

English Version

After falling, the shell and the screen were not hurt too much, but from then on:

• Can not connect to Wifi;
• Can not use the China Unicom network voice calls;

Can only be through the mobile network, how to do?

The supplement is:

• Before the fall is Android 7.x, restore the original n times invalid;
• With mobile network traffic abrupt upgrade to Android 8.0, the problem remains the same;
• Wifi open, you can find the default hot spots, the state is repeated and then repeat the unsuccessful;

Seek the guidance of the great guy. Thanks!

⟐ Commented 八月 20, 2024 at 21:38 GMT-7

已經重置手機，恢復原廠設定，依然如此

⟐ Answered 六月 08, 2024 at 0:07 GMT-7

⟐ Answered 五月 04, 2024 at 16:29 GMT-7

⟐ Answered 四月 09, 2023 at 22:55 GMT-7

⟐ Answered 八月 01, 2026 at 10:51 GMT-7

I measured power draw using my KM003C and it draws 75mA for a few seconds, then stays at 500uA. Clearly not charging and not booting either, I'd assume this is just the power draw of the port controller.

I opened it back up to check if the battery had latched, but the VBAT pads on the board measure a healthy 3.6V. Is it still possible this new battery is faulty and communication with the battery prevents the phone from working?

USB connection to a computer does absolutely nothing, no enumeration, same power draw.

I tried disconnecting all sorts of peripherals, same exact behavior with display, cameras, buttons disconnected.

I can't help but conclude that I got a random motherboard failure.

I have decided to cut my losses here and sell the remaining pristine components as donor parts.

⟐ Edited by author 七月 31, 2026 at 13:14 GMT-7

⟐ Answered 七月 29, 2026 at 14:54 GMT-7

I also do not have service and my phone isn't showing any notifications, it only vibrates.

My system is up to date with android version 17.

⟐ Commented 七月 28, 2026 at 17:27 GMT-7

⟐ Commented 七月 28, 2026 at 8:32 GMT-7

The Pixel 7 Pro Display seems to have the exact same dimensions as the Pixel 6 Pro display and the specs only seem to differ for the maximum brightness.

The question is therefore if it is possible to just use the newer and slightly better version of what seems to be mostly the same display as a replacement for the broken one or if i am mistaken about the dimensions, a different connector is used or the difference in power usage makes the swap impossible.

The fingerprint sensor should also be taken into account. Again it seems to be the same one but i could be mistaken about that as well.

⟐ Commented 七月 26, 2026 at 16:13 GMT-7

It was comfortable and I liked it very much for a while, but from one time on, I couldn't hold the outer screen at all. Even if it was closed, the inside was always on, and even if the notification came, the inside screen was glowing even though it was closed.

It does not fall or submerge, and if you try to forcefully start the sub-display using a fold switcher, the power will drop.

I tried to take a lot of logs with adb, but apparently the sub-display itself was not physically loaded. In addition, the part that normally reads the opening and closing and gives the angle is not displayed well. So I opened the inside once and tried to put it in again, but the symptoms have not changed....

In this case, will it be cured if I replace the sub-display with a flex cable? Or is it due to the disconnection of the internal flexible cable? For the time being, the battery on the sub-display side has been read, so I wonder if there is any disconnection of the flexible cable on the hinge.

If anyone is familiar with it, please help.

⟐ Commented 七月 26, 2026 at 7:44 GMT-7

https://imgur.com/a/TBINwJ1

⟐ Commented 七月 24, 2026 at 1:34 GMT-7

⟐ Answer accepted 七月 23, 2026 at 5:54 GMT-7

Distinctly unhappy with device.

Problem started after several years of good service when I tried to load Firefox browser.

⟐ Edited 七月 23, 2026 at 1:16 GMT-7

However, I cannot seem to find a guide for glass replacement only. Is there a chance I can get the original glass off without pulling out the whole screen first?

⟐ Answered 七月 22, 2026 at 14:38 GMT-7

Just a little bit ago, my music froze abruptly, and I had a solid five seconds of "Ah dangit, the wifi's out" before my phone shut off entirely and would not turn on. We're still at that point. Bluetooth earbuds are not connecting, indicating there is nothing going on inside my phone at this point & time.

I've attempted plugging it into my computer, with no discernable response, and the phone will not turn back on no matter how long I hold the power button.

I got a new case + screen protector & added each roughly a week ago-- not to say that's the issue, but I'm throwing it out there in case it contributes.

Any ideas as to how to get my phone up again?

⟐ Commented 七月 22, 2026 at 9:30 GMT-7

⟐ Commented 七月 18, 2026 at 2:46 GMT-7

⟐ Commented 七月 17, 2026 at 9:14 GMT-7

I replaced display (I was replacing displays many times in my life, so I have experiences with it) and it didn't help, still couldn't turn it on, nothing black screen, it doesn't even vibrate when I plug it into charger. So I disassembled it completely to see if there is not something damaged on the motherboard, everything looks normal, so I thought maybe charging port was broken when it felt on the ground, so I bought USB-C charging port replacement part from ifixit, replaced it and again didn't help.

There are some photos of my disassembled Pixel 4a 5G, maybe you can see something, or you can show me what could I try or measure with multimeter.

I tried to press top side button (power button) when battery was connected and when battery was disconnected too, didn't start, so battery should not be reason, because it doesn't start even without battery connected (just plugged through USB-C port).

I tried to connect it to powerbank too and powerbank was blinking so there should be some power draw to smartphone, I tried to even measure using multimeter voltage old and brand new USB-C charging port and I got some weird values like 0.2V, but I got something, I tried even measure voltage at battery connector port and got similar values, so there is flowing some current through board when plugged to charger.

Now I don't know how to continue :/

New battery replacement:

⟐ Answered 七月 16, 2026 at 20:04 GMT-7