[Nexus 5 Q&A, Help & Troubleshooting] Prodeje79:
I received an OTA Update in early to mid May. I am now forgetting which version I received at that time. ( I forget as I have done so many downgrades/upgrades/factory resets in my troubleshooting the last month!) Up until these issues, I've never rooted or flashed a ROM, or unlocked boot loader or anything. My N5 had always been completely stock.

First Issue

It all started with just the sim card. I get "no sim card" message, even though it was in there. This was my original SIM card and I had never ejected it since I bought it new. I found I could turn it off, pop it out and back in, and boot it again. Sometimes it will see the sim card again. It may take 20 times, but finally work.

I naturally got a new sim card, as well as confirmed said sim cards worked in other phones. My wifi and bluetooth were working fine at first. Working with google support, they recommended a factory reset to fix the sim card issue. Immediately after the factory reset, my bluetooth would no longer turn on nor show a MAC address. At this point, my wifi was fine.

Second Issue

In addition to the sim card slot issue, now my Bluetooth no longer works! Around this time, I received another OTA update, this time it was 5.1.1 LMY48B. I had hoped it would fix the issues, but no dice! I start reading up on the XDA forums as I am determined to start rolling back to see if this will fix anything. I unlocked the boot loaded, rooted, etc following the threads on XDA

Third Issue

I do all sorts of flashing to hammerhead-krt16m_4.4 to hammerhead-ktu84p_4.4.4 to hammerhead-lrx21o_5.0 to hammerhead-lmy48b_5.1.1 . On the final flash back to 5.1.1 my wifi now no longer works!!!!!!!!!!! It is stuck at wifi turning on and no MAC address shows. It also seems my cell data is very very slow now!

After many calls to google, I think I finally succeeded in getting a “ticket routed up”. My phone is from the play store around 10/31/2013. They keep pushing I am out of warranty. I attempt to ask for a refurb N5 without luck so far. I am not very confident anything will come from google. This being my only handset now, it is just not an option to send this to LG. My current state is my voice/txt and cell data are working. Data seems a little slow but usable. Wifi and bluetooth won't turn on. I also still have the sim car slot issue upon rebooting. After a bunch of reboots it will eventually see sim card.

What else can I try? Is there a better way to attempt to repair/reload my radio drivers? Perhaps there is corruption of sorts? I have not tried a custom ROM or radio or kernel…… I did take to a local tech. They looked at everything literally under a microscope and did not see any issues that way. I am in the USA and have a lgd820. Although we are quick to assume a hardware issue, I am wondering if there is some sort of incompatibility with the first run of N5 and lollipop….. who knows!

I’ve read all sorts of threads on the internet. It seems I am not the only one. We are very quick to assume it must be a bad motherboard, it just seems too coincidental to me!

Here is a collection of threads……

Within the N5 Sub

http://www.reddit.com/r/Nexus5/comments/2g0i3m/no_wifi_or_bluetooth/

http://www.reddit.com/r/Nexus5/comments/253y8d/my_nexus_wont_activate_wifi_and_bluetooth/

http://www.reddit.com/r/Nexus5/comments/2pur0v/wifi_stuck_on_turning_on_mac_and_ip_addresses/

http://www.reddit.com/r/Nexus5/comments/361ecw/help_wifi_and_bluetooth_stopped_working/

http://www.reddit.com/r/Nexus5/comments/2h4co7/wifi_wont_turn_on/

http://www.reddit.com/r/Nexus5/comments/2hpj2w/can_no_longer_connect_to_wifi_stuck_at_wifi/

http://www.reddit.com/r/Nexus5/comments/2wjk38/wifibluetooth_issues/

http://www.reddit.com/r/Nexus5/comments/2zboet/no_wifi_no_bluetooth_and_reboots_whenever_i_press/

Other Links

http://xdaforums.com/google-nexus-5/help/wifi-stuck-t2721643

http://xdaforums.com/google-nexus-5/help/bluetooth-t2733672

https://productforums.google.com/forum/#!topic/nexus/IJSOuc7gw0w;context-place=forum/nexus

https://productforums.google.com/fo...otification#!category-topic/nexus/1H6ZiIMYrtw

https://productforums.google.com/forum/#!topic/nexus/ke-OEPLbRSQ

https://productforums.google.com/fo...xus/lollipop|sort:relevance/nexus/NbO-AGvRCLk

http://code.google.com/p/android/issues/detail?id=80028

I found this, but not really sure it’s the same thing….. http://xdaforums.com/showpost.php?p=52441901&postcount=47