Why can t I change my OPPO a59s default data card?

If a broadband fault occurs, you can use the following methods to troubleshoot the fault:

1 Use stand-alone dial-up, if you are using a router, please temporarily disconnect the router for testing;

2 Restart the modem and the computer;

3 Re-create the broadband dial-up connection and try to dial again. How to do it: Start the Program Attachment Communication New Connection Wizard.

If the self-troubleshooting still does not recover, you can log in to the mobile phone business hall Customer Service Broadband Fault Report for feedback, and we will get in touch with you as soon as possible.

Mobile phone problem, if it is a mobile custom machine, it is possible that when inserting the mobile card and Unicom card, the default mobile card is the main card, and it cannot be manually set, and it can be inserted into the Unicom card separately.

A59S Dual SIM Network Switching:

Go to Settings - Dual SIM and Mobile Network - Internet Access - Select the SIM card that needs to be set as the network card, and you can switch card 1 or card 2 to network card.

Types of networks supported by the A59S:

A59S (All Netcom): supports China Mobile, China Unicom, China Telecom 2G, 3G, and 4G;

Mobile cards, China Unicom cards, and telecom cards can be used in any combination, and any card can choose 4G network, and the other can be 2G network; Two telecom cards cannot be used at the same time.

Dual SIM dual standby, support VoLTE.

A59ST (Mobile Customized Edition) supports China Mobile, China Unicom, China Telecom 2G, 3G and 4G; When there is a mobile card on the mobile phone, the main 4G network is selected, and the other card is up to 2G network voice** status; Two telecom cards cannot be used at the same time; When there is no mobile card, China Unicom card and telecom card can be used as the main card to use the 4G network, and the secondary card supports up to China Unicom 3G, and the two telecom cards and the other card will not be able to register the network.

Note: Part of the A59ST requirement that a mobile card must be the primary card when the machine is present.

The reason why the default data card of the OPPO A59S cannot be replaced is that the card slots of the two cards need to be replaced, and the default traffic uses the main card slot.

A59S How to Replace the Internet Card:

1. Go to "Settings";

2. Click "Dual SIM and Mobile Network" - Internet Access, and select the network card that needs to be set.

<> precautions: When the mobile phone has a China Mobile number card installed, if the non-mobile number card is set as the main card [network card], but the card cannot use the 4G network, the mobile phone is a customized machine and cannot be purchased! [This type of model usually has a "t" character after the model number].

1. Turn on the phone, you can find the settings button on the home screen of the phone, and click to enter.

2. After clicking to enter the settings interface, you can find the dual SIM and mobile network options, click to enter.

3. Click to enter the dual SIM and mobile network interface, you can find the Internet option, click to enter.

4. After clicking to enter the Internet interface, you can switch the traffic in the interface.

Hello, according to your description, your model is OPPOA59T is the 4G version of China Mobile, when there is a mobile card, the main card can only choose the mobile card, optional 4G network, and the other card is 2G network voice ** status. The two mobile cards can be switched at will, or the combination of China Unicom and China Telecom can also switch networks.

Two telecom cards cannot be used at the same time, one card can use the 4G network when used at the same time, and the other card will not be able to register the network.

You can do this in the settings Dual SIM and mobile network to switch traffic. The same can be done by replacing the card slots of two cards. Generally, the default card slot is the main card.

It may be that you are in a place where there is no network signal from the operator to which your mobile phone number belongs or the network signal is not good.

It may also be that there is a problem with your mobile phone, and the specific reason has to be analyzed on a case-by-case basis, and it cannot be generalized.

Data network is not available:

1. Check whether the current network signal is stable. When the network signal is unstable, it is easy to cause network failures. It is recommended to have a stable network signal.

Internet access in an environment.

2. Switch data network or airplane mode. This is to restart the modem and confirm whether it is the cause of the modem.

3. Change the SIM card and confirm whether it is the reason for the SIM card.

4. Restart your phone and check whether it is caused by a malfunction of the mobile phone program.

If your mobile phone cannot access the Internet normally, please check the following conditions:

1. If you don't restart your phone after upgrading to 4G**, you won't be able to use the Internet function normally;

2. Confirm whether there is a network, it is recommended that you can use it in a place with a strong signal;

3. Check whether there is still a phone bill in the account, if the balance is insufficient, you need to recharge before you can use it;

4. After 3-5 minutes of power off, restart the phone and try again;

5. Check whether the USIM card is inserted, if it has been inserted but still cannot be used, it is recommended that you go to the business hall to check whether the USIM card is faulty, or replace the card for testing;

6. If the traffic usage reaches the maximum value in the current month, the network will be automatically closed, it is recommended that you pay attention to our SMS reminder or inquire about the **product description.

Mine was the same yesterday, the signal was full, open the data, there was no data symbol, I couldn't get on the Internet, and then I turned off the phone, okay, I don't know what will happen in the future.

The reasons why China Unicom card cannot access the Internet may be as follows:

1.The mobile phone card is not plugged in properly, and the contact is poor;

3.The mobile phone card, card slot or mobile phone terminal is damaged;

4.The status of the mobile phone card is abnormal (such as shutdown status);

5.Mobile terminal card slot 1 does not support China Unicom network.

Here are some things you can try:

1.Turn the phone on and off and restart it to test it;

3.Whether the mobile phone card has enabled the Internet access function;

4.Verify that the mobile terminal supports the carrier network you are using.

If the above methods still cannot solve this problem, it is recommended to contact the local Unicom customer service or consult the official customer service of the mobile phone for understanding.

OPPOA59S's mobile phone can't use data to access the Internet when switching to the Unicom card, you can set up a single card to try. Find an open place. Maybe it's no signal.

If it still doesn't, it's a hardware problem with the phone. You need to go for a repair, or go and set it up again, and go online.

Pu Songling manuscript Pu Songling manuscript.

The phone does not have this feature from the factory, and there is a problem with the hardware.

1. Turn on the phone, you can find the settings button on the home screen of the phone, and click to enter.

2. After clicking to enter the settings interface, you can find the dual SIM and mobile network options, click to enter.

3. Click to enter the dual SIM and mobile network interface, you can find the Internet option, click to enter.

4. After clicking to enter the Internet interface, you can switch the traffic in the interface.

1. Open the [Settings] of the phone, enter the settings menu, and then continue to click [Dual SIM and Mobile Network];

2. Then click [Internet], then you can open the SIM card switching interface, and click the name of the SIM card you want to switch.

How do I remove the password from the OPPO A59S?

2. After the installation is completed, open the software, connect the phone to the computer with a data cable, and click the button in the picture.

3. Then click Clear Lock Screen Password in the tool.

4. Get root access to your phone.

5. After rooting, it will start to clear the password, and the phone needs to be restarted after the clearing is completed, so that it can be used normally.

The phone does not have a 4G signal, it is recommended that you try it according to the following operation methods::

1. You need to use a 4G mobile phone and use a 4G ** card of the corresponding standard;

2. Try to re-insert the SIM card, if conditions permit, replace it with another 4G card to troubleshoot;

3. If the 4G signal used by the mobile phone is not well covered or has no coverage in the local area, it is recommended to change the preferred network type (Settings - General - Mobile Network Settings) to check the comparison of 2G, 3G and 4G;

4. Some places have not been fully covered with 4G, and there are blind spots in coverage, so you need to change to areas with 4G coverage.

5. If other brands of 4G mobile phones also have a bad 4G signal, you can call the local operator for feedback;

If none of the above methods can solve your problem, please bring the purchase invoice, warranty card and mobile phone to the nearest OPPO customer service center for testing and processing.

OPPO A59S is a mobile phone launched by OPPO, the design of the appearance is basically the same as that of OPPO A59, with an all-metal body, three-stage metal body design, curved screen + front fingerprint recognition home button.

OPPO A59S adopts the control method of physical buttons + virtual buttons, the screen is inches, the thickness of the fuselage is there, and the weight is 160G.