Zgembo above wrote, there is many options to try from factory reset, wipe/factory reset, wipe cache partition, downgrade to radio 4.4.2, flashing stock rom once more (even stock was on my phone 4.4.4), modifying .macaddr with correct MAC, deleting persist and recrearing, deleting wifi and bluetooth folders inisde "persist", and recreating through terminal by giving them appropriate permissions, and creating new .macadrr .bluetooth files with original MAC adresses of my phone, safe mode, etc etc. , but nothing of those above didnt fix my problem freezing totally of phone when turn on Wifi.
This started happens few days ago, suddenly battery started discharge so fast in idle, 5h using - max, 8-10h idle and turn off phone, thought some sw problem, some of apps drains battery, or some corrupted system files, like .macaddr, etc. , so tried all possible sw options, but no one fixed...
GSM and 3g, LTE work ok, but Wifi whole time freeze phone when turn on it, and then phone goes in non-responding state and reboot it, it stops reboot only when turn off wifi... Checked 2x antennas white and black under back cover, both are connected ok, seems those antennas are for 3g and LTE,not wifi, cause guy from this greate dissasembling nexus 5 video bellow,
https://www.youtube.com/watch?v=OPuCmfhzgbg
mentione 3g, and 4g antennas...
Seems wifi module is directly on MB, no any antennas... So, if this problem directly connected to wifi module-chip, solution = replacing motherboard, or some try baking their MB, maybe that just fix problem temporary, and that will happen again soon, or not, didnt try, so can't judge...
Logic mb which is still too expensive, even used about 120 to 180$, so not rationally, for used phone, buy 150$ mb, if used Nexus 5 is now 200$, even less...
Good luck to all of you, to fix your Nexus 5 wifi problems!
******Update
For all of you with this problem, solution is not only to replace whole motherboard, cause still too expensive, but to find some experienced mobile-servicer, to replace wifi chip on motherboard, chip you need is bellow ,
broadcom BCM4339 wifi chip
motherboard front
Wifi-bt soc Broadcom chip location on motherboard - yelow marked
This started happens few days ago, suddenly battery started discharge so fast in idle, 5h using - max, 8-10h idle and turn off phone, thought some sw problem, some of apps drains battery, or some corrupted system files, like .macaddr, etc. , so tried all possible sw options, but no one fixed...
GSM and 3g, LTE work ok, but Wifi whole time freeze phone when turn on it, and then phone goes in non-responding state and reboot it, it stops reboot only when turn off wifi... Checked 2x antennas white and black under back cover, both are connected ok, seems those antennas are for 3g and LTE,not wifi, cause guy from this greate dissasembling nexus 5 video bellow,
https://www.youtube.com/watch?v=OPuCmfhzgbg
mentione 3g, and 4g antennas...
Seems wifi module is directly on MB, no any antennas... So, if this problem directly connected to wifi module-chip, solution = replacing motherboard, or some try baking their MB, maybe that just fix problem temporary, and that will happen again soon, or not, didnt try, so can't judge...
Logic mb which is still too expensive, even used about 120 to 180$, so not rationally, for used phone, buy 150$ mb, if used Nexus 5 is now 200$, even less...
Good luck to all of you, to fix your Nexus 5 wifi problems!
******Update
For all of you with this problem, solution is not only to replace whole motherboard, cause still too expensive, but to find some experienced mobile-servicer, to replace wifi chip on motherboard, chip you need is bellow ,
broadcom BCM4339 wifi chip
motherboard front
Wifi-bt soc Broadcom chip location on motherboard - yelow marked
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