When turned on phone gets stuck on optimizing app 1 of 1

uninstall the zedge app if you have it. I had the same problem and uninstalled one app at the time until unistalled zedge and no optimization any more. Reinstalled all other apps and phone boots up instantly.

I have same issue, (my phone is lollipop 6.0) and "think" I traced it down to a caller ID app. Tried Truecaller first and Caller ID and Blocker second, both from google play store. Each one will run after setup, but when I restart the phone or start after a shutdown, I get the " app 1 of 1" message and it never does start up. Lots of trial & error (and loads of patience) will eventually find the culprit for you. I had to do a hard reset then load back all the settings,contacts, etc and started first with my added-on apps. I installed them one at a time, then restarted the phone. If it worked, I knew that app was ok. On to the second app, and so on. Hope you find the problem. It's really a PITA.

I too Faced optimizing app 1 of 1 problem , and finally able to solved it.

In my phone this was happening due to recent update of True caller app ,

I have done three forced factory reset. ( by pressing volume and Power button)

depending on phone some phone volume up + power and some phone Volume down+Power.

every time phone could boot normally as factory resett , but when i select restore app from google history it installed all app including true caller , and when phone get shut down i face again and again same issue.

thanks to a person who has commented in true caller app about this issue.

after that i did again forced reset , and did manual app installation to avoid auto true caller app installation.

now i have not installed this app ,, and my phone is working very much normal.

Uninstalling true caller worked for me. Reinstalled it and problem came back. I guess I'll live without true caller. Thanks.

Had the same problem. Deleted Zedge and all is good now.

... Optimizing 1 of 2 apps... I drleted zedge, so now it's down to "1 of 1 apps". I deleted many of the others, and it fixed the problem completely. So.I reloaded a few and I'm back to "1 of 1"

Definitely was Zedge, but need to remove the others again and see what hits.

Since both Zedge & True Caller affect phone calls, I'm looking for that common factor.

Wish me luck.

If you can figure out what app is causing it you can use Advanced LogCat viewer on computer with USB debugging enabled on the phone to identify which app it is via the log output from the program.

It takes some time but you'll be able to find which one. Basically have it running with the device connected, reboot phone and reconnect cable when its on optimising apps. Keep checking logs for process errors or anything relevant.

Uninstall / reinstall / update that app and it will fix the problem.

I'll update post with more detailed steps when I have time.

I solved this problem by removing the London tube map app after checking which apps were using most battery on start up.

Zedge is the true problem!

This problem appeared when I switched my mobile on while it was charging. Took about 10mins to boot up with the message "Android is starting, optimizing app 1 of 1".

The only solution for me was to reset my mobile to factory default. Make sure you do a complete back up before resetting. If you cannot do a back up of your data you can still do a factory rest by pressing the UP volume button, Power button and the Home button at the same time - for Galaxy S7 Edge. However doing it this way will result in the loss of all your data.

99% sure it was Zedge app because update wouldn't finish loading either.

1% could have been True Caller app. Deleted that one too.

Strange because I've had Zedge for years on all phones. Still no problem on my old Samsung.

Maybe a conflict between the two apps somehow.

Uninstall Zedge. Worked for me

I'm not sure anyone else is still having this issue, but I had the same problem with the app Wordfeud. I figured since I didn't see that on the first 20 forum hits, I'd throw it out there by name.

I didn't do my due diligence on forums the first time and actually made a warranty claim on my LGV10. I only installed some core apps for the first few days and it was working great. The weekend hit; I installed some more fun, low priority apps, and back to 10+ minute boot screens. It's especially frustrating because one of the main reasons I stick with the V10 is the replacable battery, so every time I swapped it out I was waiting like a schmuck.

It took some trial and error, but Wordfeud was a culprit. Hello words with friends, or other scrabble game.

Later,

Anthony

had the same problem of optimizing ap 1 of 2. uninstalling zedge reduced it to optimizing app 1 of 1 kindly if anyone knows about the other app as i don't have true caller id installed in my phone.

I've found two culprit apps in this case one being zedge and the other is tubemate. Uninstall the one you have and booah you are good to go.

I have a Sony Xperia and have this problem with it coming up with 1 of 1 apps but I don't have any of the apps mentioned here. I do have: snapchat, instagram, Harry Potter, webtoon, WhatsApp, kerrang, AVG protection, play games, wattpad and three. These are all the apps I can uninstall.

I've also notice a 10256 taking the majority of my battery aswell as my phone heating up faster. I heard you could get rid of the 10256 by fully charging and rebooting without the charger on, but I don't wish to do that with how long it takes with the optimising 1of1.

Thank you! Mine was MyFitnessPal after checking what app was using the most battery power at start up.

My problem went away after I started looking at the apple Iphone sites to replace my LG. I think this outsmarted android.

Uninstall true caller!!!

I was having the same problem. Someone here said they uninstalled Zedge and it worked. Sure enough, that worked. Then I realized it started when I updated that app last week. :( what a pain!

Total surprise: try "restarting" your phone. Not "Power Off" and waiting.

Not "Airplane Mode."

I posted earlier, and yes, removing Zedge fixed partly. But I am older and back when we used paper clips to reboot our laptops, I was told "restarting" was not long enough and that we should turn off for a few minutes.

It may be coincidence, and something else (Update? Dropped the phone? Extraterrestial psychic hacking?) but after just Restart" it came right back on. I waited a while, restarted, and it worked again. Then the next day, I held my breath, crossed my fingers for luck, turned it completely off, waited 5 minutes, turned it back on, worked fine. WT

what you need to do is heat up the back cover and disconnect the battery and then reconnect it. Once you have done this clean the charging port with rubbing alcohol or nailpolish remover with a tooth brush and then leave it on charge without turing it on.

After 6 hours you can try to turn it on. If android still hasnt loaded it means your phones battery is knackered and it needs to be replaced.

my android phone is saying android is starting and the screen is stuck

Had the Same issue and it was my Wattpad app. Uninstalled and no more problems.

Solutions for me is to

Uninstall

(wallpaper app “zedge") &

Unintall updates of Truecaller

Worked for me Guys …..Do try if u have same problem .