Suddenly our Android smartphone has stopped surfing under Wi-Fi or it is connected but it is impossible to navigate "> If the cellular data connection does not work Android Wi-Fi problems: all the solutions
Below we have collected all the most common Wi-Fi problems of Android devices, so that we can quickly find an easy-to-apply solution.Wi-Fi network not visible, although it is certainly present
There may be two reasons why the Android network scan cannot find a network: the first is that we are trying to connect to an Ad-Hoc network shared by Windows, the second that the network has been hidden for security reasons.- Some Android phones do not work with Ad-Hoc networks such as those networks created by a Windows 7 PC when sharing the internet connection. To solve this problem when we use a PC with Windows we will have to create a virtual wireless hotspot using automatic programs or the manual procedure, so as to create a wireless network that is certainly compatible with the phone.
- If the problem is a hidden network, you can try adding the network manually in the Wi-Fi menu, present in the Settings app. Obviously we will have to know exactly the name of the network (SSID) in order to connect, otherwise we will never be able to find it.
The Wi-Fi network disconnects itself after some time
The reason for this problem is related to an Android system rule that, when the mobile phone goes into standby and turns off the screen, it detaches itself from the wireless network to save energy and battery. The solution is quite simple: we go to the Settings> Wi-Fi path, press on the Wi-Fi advanced and tap on the option Keep Wi-Fi active during sleep, which lets you decide when to automatically disconnect the network.From this item we can choose Never, Only when connected (when it is charging) or Always. If we use a battery saving app on Android, we check that it does not automatically turn off Wi-Fi or other network services.
Fortunately, on many modern smartphones this item has disappeared, but we can still find it on smartphones with pure or updated Android directly from Google, as seen in our guide Which Android smartphone has the best system .
In any case, you can use the WiFi Doctor app to correct Wifi connection errors automatically. It resets the system files related to the wifi connection and resets the network card.
The Wi-Fi network is connected but we don't get any network IP
Understanding the reason for this problem is difficult but, if that network is definitely working, it could be an Android bug, which often cannot manage the Wi-Fi generated by our modem correctly.First of all, we invite you to change the transmission channel of the Wi-Fi network : perhaps on the current one there are too many interferences to the point of blocking the reception of the navigation parameters. To change the channel we recommend you read our guide Connect to the wireless channel of the wifi network with the most powerful signal, so that you can set one of your choice between 1, 6 or 11, which are certainly supported by all Android smartphones.
If possible, also try setting a Static IP address in the wireless network settings on your mobile phone.
If we don't solve it like this, there could be a problem with the modem's DHCP server, which does not communicate the connection parameters to the phone; to solve this problem, we will have to rely on an expert friend or read our guides DHCP Guide: Assign IP manually or leave IP automatically? e Enter the router to access settings easily .
Impossible to surf the Internet even with excellent Wi-Fi
The reasons for this problem could be really many and different, but most of the time it is related to the settings of the DNS servers . First of all let's try to navigate another device such as a PC, a notebook or a tablet: in this way we will find out if the DNS problem is exclusive to the Android phone or involves the entire network.If the error is on the smartphone, we try to set up new DNS servers for the Wi-Fi connection in use, as seen in our guide on How to change DNS on Android . To resolve quickly we can choose the Google DNS: 8.8.8.8 as primary DNS and 8.8.4.4 as secondary; if instead we want to try other DNS services, we recommend you read our article on the fastest and safest DNS address servers to protect your internet connection .
If, on the other hand, the error is also present on the other wireless devices connected to the same network, we will have to try to change the DNS directly from the modem or try to reset the device, as seen in our guides to solutions for wifi and router connection problems and How to reset the modem .
The Wi-Fi signal is weak to the point of blocking navigation
This is probably the most common problem: the Wi-Fi signal is so weak as to prevent browsing at acceptable speeds, complete with frequent disconnections and connections.In addition to the always valid advice to move the modem, we can try to use Wi-Fi Powerlines or Wi-Fi Range Extenders, so as to increase network coverage even in rooms or in parts of the house where the signal is too weak to be properly exploited.
As a corollary, we can optimize Wi-Fi using useful applications such as Wifi Analyzer, useful for checking the signal strength of our network, and Wifi Radar, for searching and locating the position of access points.
To significantly increase the Internet connection speed, we can also rely on Speedify, an excellent app that allows you to change connections quickly on your mobile phone, going from Wi-Fi to data and with the possibility of forcing the connection even with the phone in standby.
Conclusions
If suddenly the Wi-Fi of our Android smartphone is going crazy, just follow the advice seen above to be able to solve most of the most common problems, without going crazy between signal notches and browser that no longer opens Web pages.Always on the same topic, we recommend you read our guide to understand how to connect to the wifi of hotels, bars or public networks without problems of internet access .
