1.- Turn off and on the mobile WiFi
The first solution might not be the best, or at least it might not be permanent, but it could temporarily fix the problem. It is about turning off and on the mobile WiFi. Sometimes this alone can fix the problem. If so, it is most likely that it is not a problem with your mobile, but with the router, and that it has a problem assigning IP addresses. When you turn the WiFi off and on, it reassigns an IP address, and it will work again without problems until it fails again. It is not a permanent solution, but it could be a simple solution to the problem.
2.- Turn off the router and the mobile
The problem may come from a process running on the router or on the mobile that has not run correctly. If so, it is possible that something as simple as turning off the router and turning it on or turning off the mobile and turning it on will solve the problem.
3.- Check that the password is correct
If you are going to connect your mobile to that WiFi network, and the problem is that it will not let you connect, do not think that it is the fault of the mobile or the router. Most likely it is your fault, and you have entered the password wrong. Take into account if you are given a password or are reading a password, the differences between uppercase and lowercase letters, the difference between a “zero” and a letter “o”, as well as the possible differences between a lowercase letter “l”, a letter Capital “I”, etc. On Android you have the option to see the password you have set, and check if it is correct before clicking OK.
4.- Does your router have a problem?
If you have constant connection problems with your mobile, then it is possible that the problem is with the router. What’s more, the problem may even be that the router needs to be replaced. This is easy to know. How old do you have the router? A two-year-old router, turned on at all hours, with many mobiles, tablets and computers connected to it, cannot continue to work well, especially when it is the one that your operator has installed for free. Call your operator, say that you have problems with the router, connections and disconnections, and that you need to fix it. Most likely, the technician will not even try to locate the problem, but will simply replace the router with a new one. If your rate includes a free router, the repair will not cost you anything.
5.- Do you have the latest update on your mobile?
The firmware you have installed on your mobile is also key. Why? Well, for two reasons. First of all, it is possible that the connection problems are due to a problem with the firmware of your mobile. If so, you should search the Internet if there is a problem with your specific mobile and WiFi connections. If so, you will find it easily because more users will have had the same problem. And this is when the two reasons come. You may have a previous firmware version, and updating to the new version is not a good idea because users claim to have problems with the WiFi connection, or it may happen that a new firmware version solves the connection problems that your mobile has . Depending on the mobile you have, and the number of users who have that mobile, it will be easier to find information about that firmware version or not.