[Nexus 4 Q&A, Help & Troubleshooting] mrdr0idqed2020:
Good day Android world. I am (sadly) a noob trying to (nervously, excitedly) step my game up with a new Nexus 4. I have played around with the stock ROM and my smartphone experience for the last week+ transitioning from an ancient blackberry. Below are my preliminary questions/views based on research that I am posing to the community. Many thanks for your help and patience!

- I want to embrace the customization experience and root/flash accordingly. I downloaded the N4 toolkit from dev 'mskip' and the instructions have been very clear. I am just waiting on the update to the toolkit once my donation posts before I plunge in. First basic question: if I root/tinker and then relock bootloader/flash stock ROM, is my warranty still intact? Can't Google detect some trace/fingerprint of my activity that they can use to void my warranty or does relocking/flashing stock really cover me? Has anyone had a warranty experience tested on this basis?

- Can I use the toolkit to do a full NANDROID backup of my device as-is before any root? It mentions an insecure boot image, but when I run the backup, the code says 'adbd can't be run on production builds.' Any suggestions? I doubt I will use my current phone state, but I would love to have the full backup available (just in case) before I wipe the device during rooting.

- My view on performance optimization based on research and N4 use is that I am probably good with the stock ROM, albeit perhaps deodexed and zipaligned (thanks Android wikia for those definitions!), though I get the impression that the Matr1x kernel will help me get more performance and bang for my buck on battery, since my only gripe thus far is battery as I lean on the cloud extensively for music (mediaserver hits my battery, though still secondary to screen). Does anyone think there is a better battery optimizing kernel than Matr1x?

- If I have a slightly modified stock ROM, i.e. deodexed and zipaligned, will Google still provide me with auto-updates to the ROM/OS on a timely basis as with the pure stock users?

- Do I download the custom/stock ROMs to my PC for all customization? Or can I do customization through the phone directly once root is achieved through an app like ROM Manager?

- It sounds like the phone is still faster on stock ROM rather than at least the CM10.1 option? Are there any other custom ROMs that are stable and allow a superior phone performance than the stock? As I said, I will likely keep stock for now because I believe Google has a good handle on their software, but would love to hear your thoughts.

- I am a little hesitant about the overclocking/undervolting that certain custom ROMs/kernels afford based on a couple threads I have read on long-term hardware impacts. The no-frills CPU option does seem reasonable with the Matr1x kernel though. Can anyone share a configuration (deep sleep, etc.) that they think works best for the N4 battery without compromising hardware integrity/durability? I will dig into this once I flash the Matr1x kernel

- Apps: I like Juice Defender, but my battery improvement on stock seems to have regressed a bit since I switched to Go Launcher EX. Is this the reason? Maybe the Switch widget?

Sorry this is so long. Thank you for your time and willingness to help!