Frequent "Google sign-in" error

On my Android device, I have added three Google accounts, and probably on average of once (or even twice) per week, all three accounts will have "Google sign-in" errors to show me. Unlike the question about the persistent sign-in errors, once I enter the correct password, the authentication succeeds, and the error vanishes, only to appear a week later.

I am not doing anything to change any of these accounts, but I am just using them normally on other PCs and devices. None of my other Android devices seem to have this problem. I am not using two-factor authentication.

Error dialog text:

• [English] Google sign-in: You entered the wrong password or your account has changed. Please re-enter your password.

What might I be doing to cause these errors and more importantly, how do I prevent these errors?

Can I change the *maximum* brightness from a system file/apk?

My old Asus TF101 has a faulty backlight and cuts out if it goes above (roughly) 60%. Therefore, I am hunting for a way to change (lower) the maximum brightness that the tablet will reach - both in auto brightness and by using the brightness slider.

Following this XDA thread http://ift.tt/1DRJJBn I've discovered where to change the auto brightness (the framework-res.apk) but wondered if anyone knew where the other brightness settings were stored?

Obviously I'm rooted and fully prepared to decompile system apks!

Cheers.

My Samsung Magnet has a password set for messages only, how can i get it taken off without knowing the password?

There has to be a way to reset my password to open my messages on my Samsung Magnet phone...please help! Giving this phone to my mom to use but its useless for her if she cant use the messaging.

switching Google accounts (apps(all free), etc)

I got my first smartphone, a Nexus 4, last year. I've been using two different Google accounts for e-mail etc, and I want to switch everything to one. I signed up for all my apps, etc on my nexus 4 using the Google account I want to get rid of. How do I switch over to just using my other gmail account on google play?

My wife is thinking about buying an iPhone, what to do?

My wife has started crazy talking about getting an iPhone. She has all kinds of bogus arguments like "I need a better camera", "I need something that's compatible with my Mac", bla bla.

She's using gmail as her primary email, we have a family Google-calendar etc.

How do I talk some sense into her? I need some undisputable arguments to get her thinking straight again.

lollipop update bugs

I have a moto g which I updated to lollipop (5.0.2) 2 days ago. Overall I like the new features but now I can't use a digital clock widget because it won't fit on the home screen unless it's landscape. Also I can't seem to figure out how to view the google calendar by the month now. Thank you to anyone with some tips regarding these!!

How to Detect Which App is Accessing Bluetooth from a Pop-up

I have a new Huawei Ascent Mate 2 4G Android phone and once in a while I get a message that some application tries to use bluetooth and make my phone discoverable for few hundred seconds. How do I trace which app is doing so and for what reason?