I saw some people in internet said this is the best, but some said it is not necessary except something not working. Some people suggest just wrap the phone cache if something wrong. So what should I do? I have a new update notice in my V10....
Thx, how to reset all cache?It's not required, but suggested. It usually clears up a lot of issues that might arise from a big update (residual files, cached processes, etc.). If you can 'stomach' re-setting up your phone, then a full reset should be the best course of action. If not, try updating first and just clearing the device's cache (not full reset). If you don't see any issues, you're good!
how to go to recovery mode? mine is v10. All programs and photos would not be affected?Almost the same as doing a factory reset. Power down your device, power up in Recovery Mode, select CLEAR CACHE (instead of Wipe Device or Factory Reset).
Oh, and remember, this is done AFTER updating.
Is there different between clear cache in safe mode and normal? I google and know how to get to safe mode.Almost the same as doing a factory reset. Power down your device, power up in Recovery Mode, select CLEAR CACHE (instead of Wipe Device or Factory Reset).
Oh, and remember, this is done AFTER updating.
I can clear cache in normal setting, this is not as good as doing this in recovery mode?You need to get to Recovery Mode. Safe Mode will only disable 3rd party apps from launching, but there's no option to clear cache (just to wipe the device) from there. Unfortunately it seems carriers messed up with the way to boot the V10 into recovery, so the 'method' that works most times may not work for you depending on your carrier. See this for more info:
http://forums.androidcentral.com/lg-v10/682256-how-go-into-recovery-mode-lg-v10.html
And yes, as long as you only clear cache, your apps and files should not be affected. Wiping your device will delete all files, so don't do that unless you're all backed up.
Yup, that one clears app caches only. The one from recovery clears system and apps, and since no app or part of the OS is running, it's easier to avoid files being 'protected' from a process that might be trying to use it.
Just remember, clearing cache might mean that some apps will take a bit longer to start the first time (not noticeable for most people, though).
Power up by holding power and volume down button.. As soon as you see the boot logo, release the power button while still holding the volume button for a second.. Repress power while still holding volume down until recovery comes up.
Did you do the steps?
This seems to be the 'official' way, but like the thread states, either carriers messed it up or some units won't boot into recovery. Unfortunately I don't have a V10 so I can't help you troubleshoot that