I have a Huawei Mate 10 Lite phone. My father had upgraded the package of our Türk Telekom home internet 3 days ago. Since then, Wi-Fi is on my phone, but it is so slow that it doesn't even work, it doesn't even work. However, when I enter other appliances in the house, there is no problem with Wi-Fi. How we can solve this problem? I would be glad if you could help.