i939d runs very slowly, how to deal with it?。。

Hello, according to your description, it is recommended that you clean up the junk and software self-start, you can use 360 or other mobile phone manager to view the self-startup item and prohibit the useless. Garbage is some cache files and other useless data,If you haven't got a better relief,Please try to flash,After flashing, it is recommended not to **too many programs,Because Samsung939 is already a relatively old machine,Because the update speed of smart phones is too fast,Many software also have higher and higher requirements for the configuration of the machine,You can think about the previous QQ is a few MB,Now QQ is tens of MB,There are more functions of the software,The system requirements will naturally gradually increase。 So it causes the phone to run slowly.

According to your description: the configuration of this phone is still good, it runs slowly, it should be caused by too much software you have installed, you can delete the less software as much as possible, and install some files on the external memory.

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Hello: According to your description, the mobile phone is stuck and slow to respond, it is recommended that you:

1.Turn the computer on and off again to release the memory.

2.In standby mode, Sakurano, press and hold the physical button in the middle of the phone for more than 2 seconds - select the button in the lower left corner of the pop-up interface - if there is an active app, select the right side to end all.

3.If the hand spine burying machine is inserted with an external liquid greeting SD card, take it out and test it.

4.Back up your phone's data (book, SMS, multiple files, etc.) and restore factory settings.

To save you time waiting at the service center, please use the Samsung Repair Appointment Request.

Hello: According to your description, it is recommended that you try the following:

1.Shutdown charging test.

2.Change the charging position to eliminate slow charging caused by intermittent and intermittent socket contact.

3.If the condition allows for the replacement of the spare charger for testing. Or send it for repair and testing.

4.When the phone is turned on and charged, if the mobile phone is equipped with a third-party plug-in such as a charging doctor, it is recommended to test it after uninstalling it.

5.Check whether there are foreign objects in the charging interface of the hand sanitizer such as the machine, such as liquid ingress, and the slow charging caused by the poor contact between the charging interface of the mobile phone and the charger due to the delay of debris, if this situation is recommended, it is recommended to send it for repair as soon as possible.

6.Back up your phone data (Book, SMS, etc.) and factory reset your phone (Settings - Reset - Factory Reset.

1 All according to your question, it is recommended that you back up (contacts, messages, multi**, etc.) and restore to factory settings. If the problem persists, it is recommended that you go to the nearest service center for testing. For the specific address of the service center, please visit:

Hello: according to your description, you are suggested:

1.If the phone has an external SD card, it is recommended to unplug it for testing (to rule out the cause of the poor performance of the external SD card).

2.Turn the computer back on and off.

3.In standby mode, press and hold the physical button in the middle of the phone for more than 2 seconds - select the button in the lower left corner of the pop-up interface - if there is an active app, select the right side to end all.

4.Back up your mobile phone data (**book, short message, multi** files, etc.), restore factory settings If the problem still exists, it is recommended that you bring the three-pack voucher for the purchase of the phone, and send the mobile phone to the nearest Samsung service center for testing and maintenance, please visit the specific service center address:

Brush root to streamline the system, change boot permissions, hang swap and change background permissions.

In addition, there is no direct correlation between internal storage and running speed.

According to your description:

We recommend that you try the following:

1.If your phone is stuck, it is recommended that you press and hold the home button (also referred to as the home button) for about 2 or 3 seconds to bring up the "Task Manager" option, click to enter the Task Manager - then tap the "Active Apps" option at the top of the screen - click the "End" option. Clear the memory (go to Task Manager – then tap on the "RAM" option at the top of the screen – click on the "Clear Memory" option).

2.Shut down and restart your phone.

4.If the problem persists, it is recommended that you back up your data (e.g., contacts, text messages, **) and restore it to factory settings (Settings - Reset - Factory Reset).

5.If the problem persists after the above operations, please bring your mobile phone, purchase invoice, and repair card to the Samsung service center for professional testing of your mobile phone.

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Have a great day!

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