3500mAh battery seems to have killed modem

[forretress]

Before replacing the battery, internet and texting were working on Verizon's network (I hadn't tried making a call). After the 3500mAh replacement[0] the bottom half of the screen started flickering. I immediately turned the phone off and put the stock battery in, but now I don't seem to have any cellular network access (though the phone can see my SIM card). I've already double checked that it wasn't a result of me accidentally flipping the kill-switches when I did the swap. I recognise that this was the result of me playing with fire to see what would happen, and while I'm open to advice I'm sort of assuming I'll need to wait for more main boards to come available -- replacing the modem specifically is probably above of my level of solder competency. I just wanted to warn anybody googling for pinephone battery upgrade information related to v1.2 CE that my personal experience is 3500mAh kills modems.

[0]: https://www.amazon.com/6-7-8-Battery-Cas...07F7R4HLM/

[Luke]

Very strange. I'll try to get the same battery locally and confirm.
Thank you for reporting either way.

[RTP]

Before replacing the battery, internet and texting were working on Verizon's network (I hadn't tried making a call). After the 3500mAh replacement[0] the bottom half of the screen started flickering. I immediately turned the phone off and put the stock battery in, but now I don't seem to have any cellular network access (though the phone can see my SIM card). I've already double checked that it wasn't a result of me accidentally flipping the kill-switches when I did the swap. I recognise that this was the result of me playing with fire to see what would happen, and while I'm open to advice I'm sort of assuming I'll need to wait for more main boards to come available -- replacing the modem specifically is probably above of my level of solder competency. I just wanted to warn anybody googling for pinephone battery upgrade information related to v1.2 CE that my personal experience is 3500mAh kills modems.

[0]: https://www.amazon.com/6-7-8-Battery-Cas...07F7R4HLM/

before trying to replace board/modem: are you sure your modem is toast? there seems to be an odd sensitivity. ex: if you use power cord only the phone turns on but modem n wifi do not work (without (original) battery in phone- multiple posts and petsonal exp).

I can't be sure if this relates, but since u switched out original battery i can't help but wonder if ur modem might still work with original battery type/output.

[bcnaz]

Have you used a meter to check both of the battery voltages ?