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Help Switched off phone for long periods of time

Hi, I have Samsung Galaxy j7 max. Now i got gift new phone. So I am using new one. Hence I want to keep my samsung j7 max for as a backup phone. Is any problem/issue occurred if I kept my phone switched off for long periods of time(i.e. 6 months or for year)? What precaution I have to take? Can discharge battery to 0 percentage. Or keep charge for certain percentage and then switched off? Is any battery or any circuit, or any other issue occoureo/happen if I kept switch off for long periods of time and after power on after few months/year? Plz help me/suggest me about the same. Also plz let me know what precaution I have to take.
Plz note: Samsung j7 max having non-removable battery..

Icon

An icon appeared on Samsung-SM-J320V phone. It's a black circle w/A message animation in the center of it. Some kind of audio app that reads the information on the screen. I don't know if a screenshot can be posted on this site. I have found no record of it in my apps nor can l delete it.

Samsung A5 fell in water

After my Samsung A5 Duos fell in the water for 2-3 secs, I dried it with paper towels and put it in a bag with a silica gel pack and rice overnight. Then I charged my phone, it was back to normal for around 10 secs and switched to Safe Mode. There was also a warning screen about downloading a custom OS that appeared a few times. My phone was also powering off and restarting on its own. What should I do?

Help Can't write/delete content to sd card

I recently bought a memory card, put it in my phone..entered storage settings, and set the sd card to be the default storage.

I transfered some comics, music etc, no problem.
Then, after a day or two, I couldn't download anything from google chrome on the card, infinite 'download pending'.
I can't delete pictures from it, although I can view them.
I can't download whatsapp statuses (because it uses sd storage as cache for those images)

I restart the phone..it works, but the same issue happens in a few days.

Phone:huawei y6 2018
System: 8.0 ,updated

Crazy download/upload speeds

Was at my nephew's house in Dayton Ohio today and done a speedtest in his house and was blown away by the speeds: 234 Mbps down and 38.6 Mbps up on Verizon taken on a Pixel 3a. Ran it twice to make sure I wasn't imagining things. Anyone else ever seen these kind of speeds?

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Help never activated, ZTE z990g Merit Tracphone

6/29/2019

My new, never activated, ZTE z990g Merit Tracphone has a 2.3.5 Android operating system, 125 MB internal storage, and a 1.85 GB SD card.

Can my farmer friend use it to watch downloaded Youtube videos that I transfer to it from my HP Windows 10 computer? He has no computer and no access to the Internet. His cellphone is not a smartphone.

I am a novice and this is my first post. If I need to do anything sophisticated, e.g.,unlock my ZTE z990g Smart Phone, please provide me with a link to a helpful website or video.

FB Messenger Error: (#100) The parameter family_device_id is required.

So Mom who has shunned FB for years finally wants Messenger. Downloaded and began setup, put in her phone number as required and name and it began to give a code after I agreed to Terms of Service stopped, and threw up what I assume is an error as I can go no further. (#100) The parameter family_device_id is required. She's never had Facebook, though that shouldn't be a problem. Not sure what to do? Any suggestions?
928db298-9bb3-44c3-9897-8fa8b3c67c71.png

Kyocera Duraforce Pro Ram

Hey guys. I cannot find any definite answer online regarding how much ram does the specific model have. I'm looking to purchase a 3gb ram model.

E6810 - Verizon - Ram unknown (One ebay seller said 2gb, and I found conflicting data online)
E6820 - AT&T - 2gb ram (Purchased, but will return as it's sluggish. There's also conflicting data online regarding this model)
E6830 - Sprint (Amount of ram unknown)
E6833 - Sprint (Not sure if typo and should actually be E6830)

Carrier doesn't really matter as I'll be only using it as a gps. Does anybody have any insight?

Apps startActivity didn't work

Hello,

in my app, i use the method startActivity to launch a new activity.
The code that i use:
Java:
startActivity(new Intent(this, SigninActivity.class));
but when the startActivity is called, the new activity wasn't launch, it relaunch the current activity.
In LogCat, i found this:
Code:
06-29 17:17:27.887 22615-22615/com.lekonquer.xxx.xxxxW/ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@84263c1
06-29 17:17:27.918 22615-22615/com.lekonquer.xxx.xxxx I/DecorView: It non-support bigbang
06-29 17:17:27.922 22615-22615/com.lekonquer.xxx.xxxxI/PhoneWindow: isNeedChangeNaviBarColor taskInfo: [android.app.ActivityManager$RunningTaskInfo@8eba3f2] size: 1
06-29 17:17:27.922 22615-22615/com.lekonquer.xxx.xxxx I/PhoneWindow: isAPPNeedChange pkgName: com.lekonquer.xxx.xxxx needKeep: false
06-29 17:17:27.922 22615-22615/com.lekonquer.xxx.xxxx I/PhoneWindow: isNeedChangeNaviBarColor false
06-29 17:17:27.922 22615-22615/com.lekonquer.xxx.xxxx I/PhoneWindow: generateLayout mNavigationBarColor: ff000000
06-29 17:17:27.922 22615-22615/com.lekonquer.xxx.xxxx I/PhoneWindow: generateLayout isLightNavi false, Visibility: 0
06-29 17:17:28.139 22615-22615/com.lekonquer.xxx.xxxx I/AssistStructure: Flattened final assist data: 3072 bytes, containing 1 windows, 9 views

Please could you have an idea of the issue?

Thanks

ES File Explorer moving File.

Hi,
Sorry for incorrect topic... Anyways, I downloaded file & tried it to move to "/system/etc" but it didn't work. After so many tries using different explorers I managed to move file to "/" But now I can't move my file from "/" to "/system/etc"... Why this issue is happening. I tried Mounting "/" to R/W but nothing is working for me.

Any help will be Appreciated...

Help Ok Google doing my head in.

I am constantly having to retrain Google assistant on my s8 in order to get ok Google to work.
I am probably lucky if it works half a dozen times and then i can ok Google or hey Google away as much as i like and get no response.
If i go in and retrain my voice it will work fine for next few tries.
I have wiped data cache, soft reset, everything i can think of but no joy. Anyone have same issue and found a solution.
Thanks for any help offered.

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