Replaced battery, but now wireless charging isn't working properly

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Google Pixel 4

Repair guides and disassembly information for Google's Pixel 4 smartphone, released in October of 2019.

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Kieran @kieran8017

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发帖于: 2022年9月25日

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Replaced battery, but now wireless charging isn't working properly

Hi,

This weekend I swapped out the battery in my Pixel 4, which went pretty smoothly. I don't think I damaged anything internal in the process. However, since then I have noticed that wireless charging isn't working properly.

When placed on the charging pad, the phone starts to charge just fine. But then a few minutes or even an hour later, the charging pad is no longer recognised.

If I take the phone off the pad and place it back on, nothing happens. However, if I take it off the pad and squeeeeze it, as if I'm forcing the back of the device to stick better to its adhesive, I can put it back on the pad and it will be recognised again for a few minutes. As the wireless charging coil is attached to the back of the glass I don't see why this should help, but it does.

Does anyone have an idea of why this would happen - did I damage something internal without realising, or fail to put something back properly?

Thanks in advance for any help.

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Kuromi @kuromifanboi

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Peter Missick

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发帖于: 2022年9月25日

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I would refer to this article

As I quote from the repair guide:

When installing a new wireless charging coil pad, align the contacts with the residue outline left by the old adhesive.
If the contacts don't line up with the corresponding spring contacts on the motherboard, the wireless charging coil will not work properly.

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Thanks @yukamoran! I didn't replace the coil as part of my repairs, but I guess it makes sense that alignment of the coil is important.

I guess the back of the phone wasn't exactly aligned when I put it back on - after reseating it and then leaving the phone under some heavy books for some hours to help it sit in place, wireless charging seems to be working properly.

由 Kieran 完成的 2022年9月26日

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Thanks @yukamoran! I didn't replace the coil as part of my repairs, but I guess it makes sense that alignment of the coil is important.

I guess the back of the phone wasn't exactly aligned when I put it back on - after reseating it and then leaving the phone under some heavy books for some hours to help it sit in place, wireless charging seems to be working properly. — Kieran

Google Pixel 4

Replaced battery, but now wireless charging isn't working properly

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