The tablet does not catch Wai Fi what to do. Why the tablet does not connect to wifi and what to do with it

Thanks to the growing speed, more and more tablets are equipped with GSM or 3G modules, getting the opportunity to enter the network always and everywhere, and not only in the Wi-Fi area. However, with the appearance in tablet computers, the connectors for SIM cards originated and a fairly typical problem: the tablet does not see the SIM card.

When PO is guilty

Gadget software can also be the cause of the absence of the Internet. For example, if after the network suddenly disappeared, then, with a high probability, the reason was exactly the downloaded program. Try it to simply remove it.

And sometimes everything is fault by the user's inattention: accidentally activated the "airplane" or "autonomous" mode. In this case, it is necessary to check in the device settings that mobile networks are enabled and data transmission is allowed. There see if the priority is not specified: in this case, the mobile Internet may not work, despite the defined card.

Another reason may be a system firmware failure. In this case, it will probably help or, in more severe cases, hard reset (remember that with full reset of user settings, all information on the tablet will be lost, so it is pre-made a backup).

A common situation among when the device sees a SIM card, but it does not connect to the mobile network. Most likely, parameters for native Chinese operators are set in the settings of mobile networks. You must specify your mobile operator there or if it is missing in the list and is not when searching, manually set the parameters of the APN and the others you need to connect (you can find on the operator's website, in the communication salon or by calling technical support).

Let's sum up

So what to do if the tablet writes "no SIM card"? Here is a brief algorithm:

check if the mode "in an airplane" or "autonomous" is not activated;
if the Internet stopped working after installing new applications, remove them;
check mobile network settings;
check the SIM card on another device (tablet or smartphone);
if everything is fine with the card, check the SIM reader connector using another SIM card (preferably another operator) -, attribute the tablet to the service center to replace the slot and the plume;
if the connector works and sees a map of another operator, replace its SIM in the communication salon;
if the network does not appear with a new card, make a hard reset or;
if all of the above did not help - direct road to service.

We hope that thanks to these advice, you will no longer have to confuse the back of the back when you are disconnected and you can solve the problem in most cases.

After purchasing the tablet, you will most likely want to use the wireless link. Often, users find themselves in a situation where the device does not see the network or gives a number of errors when connected. In this article, we will consider the most common problems that arise when entering the Internet and ways to solve them.

Why the tablet does not connect to the wireless network

1. Introduction of the wrong password

The most common cause of wireless Internet utilization on the tablet. Most often it occurs if the user has changed the password, and the Android device has never been connected to it. Enter the new password and check whether the device connects to the Internet.

2. Viruses

Sometimes the reason for which the device does not connect to the Internet may be the impact of malicious programs. To eliminate this problem, you must scan antivirus gadget.

3. Failure to power

For inexpensive routers, unstable work is characteristic. Racing in voltage can lead to the fact that the tablet does not see the network. To solve the problem, restart the router, disconnecting it from voltage for 2-3 minutes. Then turn on again. Sometimes a reboot must be done several times.

4. Incorrect encryption type

To check the encryption type, go to the router settings. To do this in the browser's address bar, enter the IP address of the router. This data can be viewed on the device sticker or in the instructions. In the tab that opens, select "Extended Settings". Then in the "Wi-Fi" section, click Safety Settings. To see the encryption type, go to the "Network Authentication" menu. From the proposed options, select WPA-PSK \\ WPA2-PSK2 Mixed. Restart the router. 5. Incorrect time settings and date

In some cases, the tablet does not connect to the wireless network due to incorrect dates and time values. After fixing these parameters, to resume the correct operation of the network.

6. Checking MAC-filter mode

Another reason for which the user on the tablet does not see Wi-Fi, can be changes to the filtering settings of MAC addresses. To exclude this option in the router parameters in the "Wi-Fi" section, go to the MAS-Filter item. Check which mode is selected. The following values \u200b\u200bare possible:

Disabled - by default, no restrictions for MAC addresses.
Allow - access to the wireless network is allowed only to those devices whose MAC addresses are written on the corresponding tab. Other devices access to the Internet is prohibited.

Prohibit - there is a list of MAC addresses, which are limited access to the Internet. If the router sees the forbidden MAC address, it closes the device to Wi-Fi for this device.

If you select "Allow" or "prohibit" in the router settings, check whether access to the MAC address of your device to the wireless network is open. Either change the mode to "disabled". After these manipulations, check how the gadget connects to the network.

7. Diagnosis of channels

If the tablet sees the network, but does not connect to it, check the correspondence of the channels. This problem occurs when the signals of two routers running on the same channel intersect. There are interference that closing access to the wireless network.

Look on your tablet, is there any other wireless networks. If your neighbors have Wi-Fi, then perhaps your routers work at one frequency.

To change the channel in the router settings, go to the "Wi-Fi" section to the "Basic Settings" tab. Find the "Channel" string, try to select another value.

Restart the router.

If the settings have a channel in Auto mode (AUTO), the router will search for an affordable free channel and use it. Therefore, in most cases it is recommended to use this mode.

8. Changing Wi-Fi version

The reason why the tablet does not see the wireless network, it may be that it does not support the wireless version, which is installed in the router settings. On the Wi-Fi tab, go to "Basic Settings". In the "Wireless Mode" string, slide 802.11b \\ g \\ Mixed. In this mode, the router provides Internet access for all types of devices.

What if the tablet sees the network and connects, but the connection is unstable

Try connecting the device to another router and check whether the connection is stable. If the connection is stable, then the problem is in the home router.
If during the output of the Internet on the tablet, charging was taken, and it is connected to the power supply, check the connection when the adapter is turned off. The malfunction of the power supply can lead to wireless communications problems.

If nothing helped look at this video and repeat:

If you have taken advantage of the following advice, but the device still does not see the network, refer to the specialists. It may be necessary to reflash the tablet or router.

Tablet computer is an incredibly convenient invention. You can not be attached to the workplace, as in the case of stationary computing systems, and also do not carry extra kilograms in the form of a full-size laptop. However, without accessing the Internet, the tablet loses significantly in the flexibility of use. However, it concerns all mobile devices. In the light of this, it is quite clear that if the tablet does not see WiFi, then a similar problem must be immediately solved.

Connection order

The number of tablet computers running the Android operating system is ten times larger than their fellow managed by the relevant version of Windows or iOS. That is why this article will be discussed precisely about massive devices. People who first have encountered Android apparatus, can not always correctly use wireless communication. And since in the normal state the Wi-Fi module is turned off, then the newcomer has a question: "Why does not the tablet connect to WiFi?" In fact, everything is quite simple. The process of joining the existing wireless network includes several mandatory stages:

using the receiving-transmitting module of the tablet computer;
scanning range and select from the list of desired SSID name;
set of secret combination.

If the network to which the connection is performed is open (free), then the last item is not required.

How to connect the tablet via wifi

You must open the "Application Menu", which is on any Android device. Usually, to access it, you need to click on the image of the circle at the bottom of the screen. Next, carefully view all the icons and find the "Settings". After clicking on it, the window will open where there is a section "Wireless Networks".

If you specify the WLAN item, you can see the "Off / ON" switch. When you enable automatic frequency scanning and output of the list of detected networks. You can also see whether password is used, and where exactly. If the network is open, it is enough to click on its name, and the tablet will connect to it. In the case of protection (WEP / WPA / WPA2), a password request window will be issued when trying to join. When specifying it and pressing the appropriate button, you can associate a mobile device with the network.

There is a faster way to access Wi-Fi. For this there is no need to search for "Settings". It is enough to spend your finger across the screen down, pulling the curtain, find the image of WLAN (Wi-Fi) and click on it. There will be activated module, scanning and issuing a network list.

Alternative nuances

Now many android devices are often replaced by the official firmware of custom (made by craftsmen). As a result, not all functions work as familiarly. For example, if you use a call through a curtain, then the tablet does not see WiFi. The list of detected networks is simply not displayed.
Therefore, in such cases it is necessary to include the Wi-Fi module through the "Settings". When used, it should be remembered that some of them have recognized errors in working with networks. At the same time, the newest "self-written" software updates often integrate the most "fresh" versions of Wi-Fi drivers. The output is simple: before learn a lot of information about why the tablet does not connect to WiFi, sometimes changing the firmware.

Problem standards

In order for the devices to be merged into the wireless network, it is necessary that the protocols supported by them were compatible with each other. Thus, the first Android tablets can simply "not know", how to work with WPA2 protection, supporting only WEP. In this case, it can help the change of encoding type in the router settings. True: "Corywo" The configured access point can ruin the life of the most patient owner of the modern tablet.

Intermediate solution

So why does the tablet be connected to WiFi? There are a lot of reasons. We pointed up the most simple. In addition to them, the power of its transmitter affects the capacity of the tablet with the wireless network.

Very often, when scanning the desired SSID is determined, and even a password is accepted, but it is impossible to work with such a connection. This is due to the fact that, although the device and "sees" the router, the data packets sent to the addressee do not reach the destination. The solution is simple - to physically get closer to the access point. This "illness" often suffer inexpensive in which ampace transmitters are used.

Program-crutch

But what to do, if no apparent reason stopped connecting the tablet to WiFi, although until recently everything worked properly? You can try to take advantage of a wonderful software solution, free distributed in the market, - Wi-Fi Fixer. After installing the application, you need to restart, and the subsequent connection to the network is performed through the interface of this program, which will be displayed in the curtain. In addition, sometimes it helps to solve problems with the transfer rate.

Work with settings

Taking over why the tablet does not connect to WiFi, it is impossible not to mention possible failures in the operating system itself. Installing third-party applications, make changes to the operation of components, receiving root-rights - all this can affect Wi-Fi. Performance can be tried to recover through return to the factory parameters. To do this, proceed to "Settings - Personal Data" and use "Restore and Reset". At the same time, all user data (including a phone book that is not scorched to file) will be erased. Therefore, it is pre-prepare copies.

A modern tablet is difficult to imagine without Wi-Fi module. However, sometimes the user faces a problem in which the tablet does not see Wi-Fi. What could be the causes?

1. The first reason that immediately comes to mind is a weak signal due to the design features of the gadget. In contrast to the laptop antenna, the Wi-Fi-antenna of the tablet has smaller sizes and can be covered with a metal cover, which can significantly weaken the received signal.

Decision: Place the tablet in close proximity to the router or try to enhance the signal.

Search Wi-Fi in iPad

2. The operation of the router at a frequency not supported by the tablet may cause the tablet not see the Wi-Fi access point. There are three main standards: 802.11b, 802.11g and 802.11n. Despite the fact that many routers are capable of working in a mixed mode, providing data transmission at all possible frequencies, some network devices support only one data transfer standard. Let's say 5 GHz. And the tablet works only by 2.4 GHz (802.11b or 802.11g). Of course, the tablet will never see Wi-Fi.

Decision: To find out in detail the characteristics of the tablet before buying, make sure that the router and the tablet in terms of supported Wi-Fi protocols are compatible.

3. The reason may also conclude that the access point was hidden by its owner.

Decision: Change the router settings so that the access point is no longer hidden. At the same time it is worth checking whether the wireless mode is enabled. There may be a general rule. In the settings of many routers there is an "Enable SSID broadcast". If you remove a tick with this setting, the network will become hidden. Opposite the setup "Enable Wireless Broadcast" should also stand a daw - in this case the wireless connection will be allowed as such.

4. The reason may come in the router itself. Here are several ways to solve the problem.

Cause

Decision №1: Reload the router.

Decision number 2.: Rollback of the network device to the factory settings.

Decision number 3.: Refrun the router by downloading the latest version of the firmware from the official network manufacturer.

Decision number 4.: Buy a new router, if nothing about the above helped.

5. Cause of the fact that the planets does not see Wi-Fi can also walk in the tablet. Here you can also consistently try to resolve it in several ways.

Cause: hanging the router or failure in its work.

Decision №1: Reload the gadget, with the result that the cache will clear and disappear some errors in the system.

Decision number 2.: Reset the gadget settings to factory. This measure is cardinal, but without it, it happens, not to do. The fact is that, unlike Windows, with its flexible network settings, the Android operating system will not allow reinstalling drivers for a Wi-Fi module, reset network parameters or configure the network adapter. Android devices, as a rule, are connected to the access point in automatic mode.

Other reasons: Routher malfunctions as a result of physical impact, namely:

Antenna failure due to the fall of the gadget.
The oxidation of its contacts in high humidity conditions.
The negligence of the wizard during repair work when he forgets to connect the antenna.

Decision: Open the tablet case and:

Make sure the antenna is connected.
If there are traces of the oxidation of contacts, clean them.

Cause: The failure of the network adapter of the tablet as a result of its burnout due to overloads in its operation.