If an android appears on the screen with exclamation mark, this means that an unsuccessful experiment was carried out with the device software. Perhaps this happened due to the installation of an unlicensed program or after switching from original firmware to custom.
From the article you will learn
Hard reset
This action is carried out in the engineering menu of the device and allows you to return the smartphone or tablet to its original settings, which is very useful when the android lies with an exclamation mark. A special engineering menu is called up by pressing certain buttons, but there are some difficulties here. Models different manufacturers keyboard shortcuts are different. A specific sequence in a call engineering menu is present.
The device must be turned off. It is best if the battery is fully charged. For most gadgets, the following button combinations are suitable for calling up the menu:
- The volume down key (or volume up key) is pressed and held together with the power button.
- Both volume control keys are clamped and held, and then the power key is pressed.
- At the same time, 3 buttons are held: the main screen, adding volume and power.
- The Home key is pressed together with the volume control key down, then the power key is pressed. You must wait until the manufacturer splash screen appears and release the power button. After the robot image appears on the screen, you can release everything and wait for the engineering menu to appear.
- Press and hold the power button for 2 seconds, then hold down the sound control keys and the power button, hold until a special menu appears.
After that, the gadget will either restart and restore the factory settings on its own, or an engineering menu will appear. Note that in this mode touch screen does not work, all menu navigation is performed by the sound control keys, and the selection button is the power key or the Home button. You must select the item "Wipe data / Factory reset".
Several lines will appear on the display and the question ("delete all data from your device?"). You must agree, after which the device's memory will be cleared.
Reset across devices
On smartphones and tablets manufactured by Samsung, the engineering menu is entered by simultaneously pressing 3 buttons: the gadget's main screen call key, the volume up key and the power button. Resetting to the original settings is done using the Wipe data / Factory reset item and then rebooting.
HTC devices, when an android with a red exclamation mark appears on the display, can be brought back to life by pressing and holding the power and volume buttons. When Warning appears on the display, you can release everything and press the volume up key. On some models, while holding the volume down button, press the power key and hold until the android robot appears on the screen. After it appears, you can release the buttons and hold down the volume key again. A menu will appear in which you need to select the item "Restore initial settings».
On Acer smartphones, resetting the settings is done by pressing and holding the volume up key and the power button. A menu will appear on the screen where you need to select the Recovery Mode item and press the volume down key. An android with an exclamation mark will appear. Now you need to press the power button. A menu will appear where you need to select Wipe data / Factory reset.
And on the tablets of this company, you need to move the screen lock lever to the left position, hold down and hold the power button and the sound control keys. When the tablet starts to vibrate, you need to change the position of the screen lock lever several times until the display shows Erasing Userdata and Erasing Cache. From this moment, the deletion of the settings will begin.
To return to the factory settings, the Asus device must be transferred to the engineering menu by pressing the volume down key and holding the power button for 3 seconds.
After the time has elapsed, the power button can be released, and the volume down key can be held until a special menu appears. There you need to select the item Enter recovery mode, then Wipe data/Factory reset.
Device firmware
If hard reset did not help, a complete software replacement is required. But there is a formality here: the firmware will help only if the “USB debugging” function has been enabled in the device settings. This method is quite risky and at the slightest violation of the instructions can lead to damage to the device.
Here it is worth considering: should I try to restore the device on my own or trust professionals? But if you decide to flash the gadget yourself, you should carefully study all the available information on this issue. Models from different manufacturers have significant differences and features regarding the change of software.
In general, the software replacement process looks like this: a file with firmware is downloaded, installation information is studied, and reviews about this firmware version are read. Next, the file should be unpacked to the root directory of drive C and, if necessary, install the drivers for the gadget. After that, the device must be turned off and using a key combination (usually a combination of the power button and volume up) is switched to firmware mode. After that, you should connect the device via a cable to the computer and follow the further instructions of the program. At the end of the process, it is imperative to perform a hard reset using the engineering menu.
What should be done after restoring the device?
The main disadvantage of resetting the settings is the loss of information stored in the gadget: photos, videos, applications, music, contacts, etc. Therefore, it is best to regularly synchronize your smartphone or tablet with Google.
This gives very great opportunities. For example, if you take a browser, then synchronization with it will allow you to access saved passwords, bookmarks and other useful things in any gadgets.
Thus, synchronization with a Google account is necessary for the convenience of using various services and applications. You can also sync contacts to mobile phone with Google contacts.
If synchronization with Google has not been carried out, then it is better to do it immediately after the gadget is restored to working order. First of all, you need to add a Google account. If you already have an account, please enter your email address and password. Email and click OK. After that, it will be proposed to backup and restore, which will allow you to back up the data of this device in Google account. By pressing the "OK" button, you should confirm the synchronization and wait a few minutes.
After the process is completed, you need to click on the email address, where it will be seen that all services have been updated. You will receive a notification that new messages have been received and that photos have been synced, the browser Google Chrome, google drive, calendar and contacts. Sync your tablet or smartphone with Google is better do it as often as possible.
In this case, put on charge for a couple of hours. Then, hold the button off for 15 seconds (or press reset). Wait about 15 minutes for the tablet body to cool down (the back cover may get warm when charging). Now try to turn on (3-5 sec button on) and wait 2 minutes.
Please accept my condolences, because if you are reading this article, then your Android tablet has stopped turning on. The reasons can be "iron" and "software". The first reason is the physical inability to turn on due to damage to the battery, board, cables. The second is that someone screwed up the OS on the tablet, and due to the fact that it got crooked after, or some freshly installed program turned out to be extremely incompetent, the device cannot “start up”.
Tablet won't turn on at all
1. Remember the last time you charged your electronic friend. One of the most common reasons is a tablet fully discharged. In this case, even if you put it on charge, it should take some time (sometimes up to 10 minutes) when the tablet has enough power to turn it on. Sit next to the patient, and with a break of one minute, hold down the power button for a long time until the screen lights up. And yes, you must be sure that Charger working. If there are no changes, check on another device if the charger works, or change it. If you are interested, then you need another article.
2. Remember, maybe you gave a tablet to a child? Perhaps the baby slammed the screen against the corner of the crib with all his might, and damaged the display. In this case, the tablet itself can work, but the screen will have to be replaced. The situation is the same if the tablet s landed from a height of one and a half meters on asphalt or a tiled floor. On your own, you can do little to help him - you can only sympathize with the poor fellow. Usually, a damaged screen is indicated by visible mechanical defects, or the absence of an image when turned on (only the backlight can be seen instead, and even then not always).
3. The tablet did not fall, did not hit, but there is no image? Unlikely, but still: perhaps the video adapter has come kaput.
If your tablet still has a warranty, then it's stupid to fix it yourself. Take it to the service center and don't worry. Of course, you can download schemes on the Internet and try to fix it yourself or give it to a friend, but it’s better not to do this.
Tablet turns on only halfway
A software failure is to blame for everything, and only he. In such cases, we observe the display backlight turned on, and then an endless download (ANDROID is constantly shimmering), or we see an image with a broken green robot.
This may be due to:
1. Incorrectly installed or crookedly working games, programs, launchers.
2. Forcibly terminated system processes that ensure the stability of the operating system. This can easily happen if you "killed" system process through some sort of task manager (or dispatcher), or third party program"battery saver" Trust me, this happened to me once.
What can be done in such a situation?
There is a chance to "revive" the tablet by resetting its settings to factory settings. It is done with the help of Hard Reset, and it is better to google how it is done specifically for your model. Especially if you have a tablet from a Chinese manufacturer. I highly recommend that you read the instructions for hard reset on various devices. Briefly describe general principle, most likely you will need to do the same:
- Turn off the tablet
- We take out the memory card and SIM card (just in case)
- Hold down the volume up key ( and for some it is a decrease!) and the power button for about 10 seconds, the time is also not the same for all tablets.
- The tablet should vibrate
- A menu appears. Select the item with the volume and power keys Settings. Further - format system
- Choose reset android , the tablet will reboot
- All data and settings that were in the device’s memory will be erased and returned to the factory settings.
- Don't be scared if you don't succeed the first time, it mostly works out the second :)
If a this instruction didn’t help, try using the advice on a hard reset from the commentator Dima in the article, you can not look for the advice itself in the comments, I added it to the article. It also helps to bring the device back to life. And how to restore the tablet after unsuccessful firmware written .
Just in case, an English-language video instruction on a hard reset for Acer tablet Iconia Tab A500:
If a lying Android with a red exclamation mark appears
In many, I noticed in the comments, everything ends up like in the picture, or something like that:
This is the stock recovery mode (if you are wondering what it is), and there is nothing wrong with it and you should not be afraid of it. Moreover, you can - ClockWorkMod Recovery. If you see it, it means it works, which is good. You got into it because you entered the wrong combination for a hard reset, and I warned that it is not the same for all tablets. In this situation, you can press and hold the power button until the tablet turns off and try again, or just wait 5 minutes until it turns itself off and repeat the process. Try again, in extreme cases, you can just reflash.
fastboot mode
Still sometimes, when trying to find the right combination, users get into fastboot mode. In such a situation, we observe the lying “Android” with an open belly / belly, but without an exclamation mark. An example of such a menu for Nexus 7 (2013) in the photo:
If you got here, then use the volume buttons to select the item Restart bootloader and press the power button to confirm your selection. Perhaps this will help you load a tablet that has not been turned on before.
In general, it is useless to advise something specific here, since each model has its own pens. For some tablet models, you just need to press the Home button if a lying Android with an open belly appears - and a menu will appear in which you can choose to reset the settings. And for some - simultaneously press the increase and decrease the volume. And wait.
The green android robot no longer greets you when you turn it on, but is accompanied by an exclamation mark.
So, if you observe this picture - the android lies with an exclamation mark, then you can be congratulated for having completed your first unsuccessful experiment on interfering with software your device. What is it, and most importantly, what to do with it and how to restore the viability of the device? The search for answers to these questions must begin, first of all, with finding out the reason that led to this condition.
If you installed a program incorrect for android, then after rebooting it will definitely please you with an image with an exclamation mark. There is only one way out - to do a hard reset by selecting Wipe data / factory reset in the engineering menu.
Entering the engineering menu, if your android "lies" is different on different smartphones on android, but the combination of home, power and volume down keys is recognized as standard. On devices with touch button home is usually a combination of the power and volume down keys. The key combination suitable for your device must be pressed with your fingers and held until the service menu appears on the screen.
After the appearance of the inscriptions, you must select the appropriate item by moving up and down using the volume rockers. After selecting this item, several lines will appear on the device screen, asking if you agree to delete all data from your device. After selecting the yes line, the device memory will be completely cleared. The next step is to automatically select the rebootsystemnow item, which means rebooting the system, if the device does not reboot. If after these operations your device has restored its working capacity, then we can congratulate you. The only negative this method is the loss of all information - including contacts, sms, photos and downloaded applications.
However, if you have regularly synchronized your phone with Google and remember your username and password from account, then your losses will be negligible.
If the above method did not help, then a complete replacement of the software is required. There are two ways - the first is flashing the device using a usb cable and a computer, but it will only help you if the “usb debugging” function has been enabled in the device settings. The second way is to update the software using a flash card through the engineering menu. Both methods are very risky and at the slightest violation of the instructions will lead to the complete death of the device. At this stage, it is worth considering whether to try to restore the device on your own or trust professionals.
If you still decide to flash an android with an exclamation mark yourself, then you should carefully study all the information provided on the Internet on this issue. Certain types of android devices have significant differences and features regarding the change of software. Briefly and generally describe this process, it looks like this - you find the firmware file on the network, download it, along the way studying the reviews about this version and installation information. After that, you decide on the method for carrying out the android recovery procedure with an exclamation mark.
If you have chosen the method using usb cable, then unpack the firmware files to the root directory of drive C on the computer, install drivers for your smartphone if necessary, turn off the phone, use the key combination (usually use the combination power + volume up) enter the phone into firmware mode, connect the device via usbcable and follow the further instructions programs. At the end of the process, be sure to hard reset the device to default settings using the recovery menu.
If you decide to resort to the second method and restore the software using the device itself and a flash card, then the steps are as follows - upload the firmware file to the root directory, insert the flash card into the phone and run it in recovery mode. After the engineering menu appears, select the restore item using SD and wait. After the end, it is also necessary to reset the parameters of the android device.
What to do if Android lies with an exclamation point? In the article, we will consider the main causes of device malfunction and ways to solve it.
First version operating system Android appeared in 2008. The presence of a large number of functions, ease of use and low price compared to analogues made it accessible to a wide range of users. It is not surprising that issues related to the long and uninterrupted operation of devices with this operating system are very relevant.
An android icon with an exclamation point on the screen indicates a malfunction in the device software. It can be associated either with the installation of an unlicensed program, or with a virus infection.
Photo: Android lies with an exclamation mark
Usually, a user may encounter such a problem when turning on (rebooting) a smartphone or tablet. If this happened to you, what can you do?
The first thing that is offered in such cases is. To do this, you need to turn off the device, if necessary, recharge it to 100% and turn it on in the menu for developers. Since the key combination depends on the smartphone or tablet model, we recommend that you refer to the instructions. In the standard case, this can be done by simultaneously holding the power, volume down and (or) Home buttons.
In some cases, the smartphone after this action can restore the factory settings automatically, but sometimes it needs to be done manually. Remember that in this state only the buttons work (you will not be able to use the sensor). To move up and down through the menu items, you will have to use the volume keys. In the list, you need to select the “Wipe data / Factory reset” position with the power button or Home button, which means “delete data / reset settings” and confirm your choice in the next window that opens.
Photo: Hard reset menu The main downside to this action is to remove everything from your device that is not factory settings. And these are contacts, messages, photos, audio and video recordings, and programs you have installed. Therefore, if you do not want the safety of your data to depend entirely on one electronic device, do backups in advance.
If you are not sure that you can handle this task on your own, it is better to contact a specialist, because any mistake can lead to disastrous consequences.
If the "USB debugging" function is enabled in the android settings, you can reflash the device,.
Photo: USB Debugging 
Photo: USB Debugging We unpack the already downloaded folder with the program on drive C. Check for the downloaded drivers for your smartphone and install if they are not. Turn off the device, use the key combination to enter it into the firmware mode and use the cord to connect it to the computer. Then follow the instructions of the program.
If you have not connected the ability to debug your smartphone via a USB cable, consider another option to reinstall the software using the device itself and a flash drive. To do this, you will have to return to the menu described earlier by selecting the option to restore using SD.
Photo: Flashing Android In both cases, at the end, you will have to reset the system to the original settings again.
Let's summarize: Android lies with an exclamation mark - this is not an easy problem, but it can be solved. If you don't want to deal with it often, be careful what you download to your device. Be sure to install .
You can fix the problem either on your own or with the help of a specialist by resetting the settings or reinstalling the software.
Dear readers! If you have any questions or comments on the topic of the article, please leave them below.
Usually, many owners Android smartphones and tablets are looking forward to receiving new versions of the operating system on them. And this is not surprising, because they bring us not only new features and capabilities, but also solutions to current problems, as well as fixes for minor errors.
But sometimes the opposite is true - the long-awaited update brings us new problems and sometimes these problems are quite serious. Take at least, for example, a tablet Google Nexus 9 , for which the other day was released android update up to version 5.0.2 .
Some owners of these tablets complain that after installing it, the tablet stops loading, while going into a cyclic reboot.
If you are one of those affected by this update, then we have good news for you: you can easily restore the functionality of your tablet after installing the ill-fated update on it.
To do this, you need to clear the cache of the operating system. You can do this from the factory recovery of your NEXUS (or from an alternative recovery such as Clockworkmod or TWRP - if you installed the update on the tablet manually from a file).
The procedure for clearing the cache from the stock recovery is quite simple:
1. Turn off your tablet completely.
2. Turn it on by pressing and holding the power and volume down buttons at the same time.
3. The tablet will boot into bootloader mode.
4. By pressing the volume buttons, select the "Recovery" option and confirm your choice by pressing the power button.
5. After the tablet reboots and a green robot appears on the screen, press the power button, and then without releasing it, the volume up button.
6. You are in recovery. Now, by pressing the volume buttons, go to the “wipe cashe partition” item, then start clearing the cache by pressing the power button.
7. Reboot the tablet: "reboot system now"
Everything, now your tablet should launch successfully new version Android.
If this did not happen, then we have not very good news for you: you will have to say goodbye to all personal data and applications installed on your tablet. In this case, you will have to do a factory reset to restore the system to working order.
You can do this from the bootloader mode: follow steps 1-3 of the above instructions, and in step 4. select the “Factory Reset” option.