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Based on your description, we recommend that you try it by following the steps below:
2.Take out the SIM and clean the SIM card metal contacts with an eraser. (Whether it is a SIM card with poor contact).
3.Try to replace a SIM card (whether the SIM card is aged or damaged)4Check whether the phone has software such as Security Guard or Calendex installed, and try to uninstall it.
5.Back up your phone's data (book, SMS, multiple files, etc.) and restore factory settings.
If the problem persists, we recommend that you take your phone to the nearest Samsung service center for testing and repair.
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1.Turn off and restart your phone.
2.Take out the SIM card and reinsert it.
4.It may be related to the network signal coverage of your location, it is recommended to change to another location with a better signal and then dial ** to try.
5.Try to change another SIM card.
If the problem persists, please bring the purchase invoice, repair card and machine to the Samsung service center, and a professional after-sales engineer will help you test it.
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If the phone displays"Not registered on the network", suggested:
1.Check if your phone has recognized the SIM card. If it is not recognized, please turn off the SIM card and try to reinsert it.
3.In addition, this situation may be related to the network coverage in your location, and it is recommended that you try again in another location with a better signal.
4.Try to change another SIM card to rule out whether it is a SIM card.
If the problem persists, please bring the purchase invoice, repair card and machine to the Samsung service center for professional after-sales engineers to help test.
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This will happen if the network used is a 2G network, but not 3G.
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Mobile phone transmitters that interfere with network transmitters.
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My mobile phone used to be, because of the location where you hit **.
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Mine too, card 2 has this problem.
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If such a problem occurs, it is recommended that you use 360 Mobile Guard, a comprehensive physical examination to repair it, and then use it to find and deal with viruses. That should work out.
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In this case, it is recommended to use 360 mobile phone guard to repair the physical examination, and it can be normal after repair.
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It's the same as my phone model! Mine can send a message, maybe yours is broken.
If the phone cannot install the software game, it is recommended: >>>More
According to your description:
When the machine is connected to the wireless network, but the Internet cannot be accessed, it is recommended to eliminate it by the following methods: >>>More
You can troubleshoot and handle the problem by following the steps below: >>>More
This is a bit abnormal.,You're only more than two hundred.,It's too wrong.,When you buy it, it should be the merchant who brushes the machine for you.,It should be normal.,Or you're tragic.,You've been fooled.,Old Guangsan,I've never heard of it.,Brush the machine to wipe the memory away.,Or it's the special function of S4,I haven't used it.,Mine is S3,I suggest you,You go to the Samsung store to verify the authenticity of the phone,Billing,Find a merchant to help you get it.,You don't brush it yourself.,If there's a problem, I'll find you.,I'll tell you" You brush the machine yourself.,It's broken.,Repair to give money.,Artificial",If you don't believe it.,You can try.,Don't brush the machine yourself.,Wait for the problem to be clear.,I'm playing in the flash.,Generally, there will be no problems.,As long as it's not a locked machine.。
Samsung has always been an opponent, and it is not afraid. Huawei has risen in the last few years, and there is a certain threat, and the United States is trying to prevent its development. Samsung is already a global company like Apple, and Huawei is still developing, so it wants to suppress it.